GB2073009A - Improvements in or relating to leg guards - Google Patents
Improvements in or relating to leg guards Download PDFInfo
- Publication number
- GB2073009A GB2073009A GB8107940A GB8107940A GB2073009A GB 2073009 A GB2073009 A GB 2073009A GB 8107940 A GB8107940 A GB 8107940A GB 8107940 A GB8107940 A GB 8107940A GB 2073009 A GB2073009 A GB 2073009A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leg guard
- pad
- guard according
- leg
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000002414 leg Anatomy 0.000 claims abstract description 38
- -1 polyethylene Polymers 0.000 claims abstract description 27
- 239000004698 Polyethylene Substances 0.000 claims abstract description 20
- 229920000573 polyethylene Polymers 0.000 claims abstract description 20
- 210000003127 knee Anatomy 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000001413 cellular effect Effects 0.000 claims abstract description 14
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 210000000689 upper leg Anatomy 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000002243 precursor Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 210000003423 ankle Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 229920013683 Celanese Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 210000001137 tarsal bone Anatomy 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/08—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions
- A63B71/12—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders
- A63B71/1225—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/08—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions
- A63B71/12—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders
- A63B71/1225—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet
- A63B2071/125—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet for the knee
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/08—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions
- A63B71/12—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders
- A63B71/1225—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet
- A63B2071/1258—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet for the shin, e.g. shin guards
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/08—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions
- A63B71/12—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders
- A63B71/1225—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet
- A63B2071/1266—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions for the body or the legs, e.g. for the shoulders for the legs, e.g. thighs, knees, ankles, feet for the calf
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/08—Closed cell foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/72—Density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2571/00—Protective equipment
- B32B2571/02—Protective equipment defensive, e.g. armour plates or anti-ballistic clothing
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
Cricket pads and other leg guards for games players comprise a first, outer layer 11 of plastics material which provides an impact resistant surface and a second, inner layer 10 which provides a resilient padding for the leg of the user. The outer and inner layers, which can be in the form of a laminate, can respectively be a non- cellular polyethylene or polypropylene and a cellular polyethylene or polypropylene. The pad preferably has upper and lower portions adapted for hinge-like movement in the knee zone of the pad. <IMAGE>
Description
SPECIFICATION
Improvements in or relating to leg guards
This invention relates to leg guards, in particular to leg guards for protecting the ankles, shins, knees or other parts of the legs of games players. The invention is concerned particularly with cricket pads, and it is with reference to cricket pads that the following description particularly relates.
The conventional form of cricket pad provides adequate protection for the players but is of a structure whose production is labour-intensive and therefore expensive. There is, in consequence, a demand for a pad that can be produced simply and cheaply and yet provide satisfactory protection for the player.
Various proposals have been made to manufacture cricket pads from plastics materials but none of these have gone very far in challenging the superiority of the conventional pad, despite the expense of the latter. One of the principal disadvantages of the pads of plastics materials hitherto proposed is that, where they have been of sufficient strength to withstand continual impact with the ball, they have not
been sufficiently flexible to permit the user easily to bend his leg, and therefore they have not been comfortable to wear.
The present invention now provides a cricket pad or other leg guard which is of sufficient
robustness and yet which is flexible enough to permit the user easily to bend his knee and therefore to wear the guard with comfort.
Accordingly, in one aspect the invention provides a cricket pad or other leg guard formed from
plastics material, comprising a first, outer layer which provides an impact-resistant surface; and a second, inner layer which provides a resilient padding for the leg of a user of the guard.
In a second aspect, the invention provides a cricket pad or other leg guard, which comprises a lower portion to protect, in use, at least the shin of the user; and an upper portion to protect, in use, at least the lower part of the third of the user; and the lower and upper portions are disposed with reference to the overall dimensions of the leg guard so that, in use, the knee of the user is behind a knee zone connecting, or comprising contiguous border zones of, said lower and upper portions, the leg guard having flexibility in said knee zone to permit hinge-like movement of said lower and upper portions.
In the preferred embodiments of the invention the inner layer serves the dual purpose of absorbing energy from the ball when it strikes the pad and also of providing a comfortable surface to bear against the leg of the user.
Flexibility of the pad in the region adjoining the upper and lower portions can be provided, for example, by the use of slots or other re-entrant means extending inwardly from the side edges of the pad. Another means is to have a reduced thickness of pad (for example by having a reduced thickness of the inner layer) in the knee zone of the pad. A further means of providing enhanced flexibility, which can be used with either or both of the features referred to above, is the use of relief lines or other relief zones extending across the pad in the knee zone (for example between the inner ends of opposed re-entrant means referred to above). These zones (which can, for example, be grooves or other areas or reduced thickness in the outer surface of the pad) can, if deep enough, facilitate bending of the pad in the knee zone.
The inner and outer layers can be layers of a laminate of plastics material providing, on one face thereof, an impact of wear-resistant surface and on the other face a resilient comfortable material for the leg of the user. These laminates can be of two, three or more layers. In a preferred form of the invention the outer or outermost layer consists of a wear-resistant flexible theremoplastic material. This material is conveniently a polymer of an alphaslefin, for example a polyethylene or a polypropylene. The material comprising the inner or innermost layer of the pad is conveniently a cellular or foam plastics material; and in one form of the invention this plastics material is a polymer of an alpha-olefin, for example a polyethylene or a polypropylene.In between these two layers, if desired, there can be a further layer or layers, for example a layer of a cellular or foam plastics material (for example of a polyethylene, polypropylene or other polyolefin) securely bonded to each of the other two layers or to the adjacent layers, as the case may be. In a preferred form of the invention this intermediate layer is of a polymer having the same chemical constitution as that of the inner layer.
In a preferred form of cricket pad according to the present invention the thickness of the outer layer, any intermediate layer and inner layer are of progressively increasing amounts. For example, where the laminate or other multi-ply material consists of two layers, the ratio of thickness of the outer and inner layers is conveniently in the range 1:12 to 1:8, for example 1:11 to 1:9; and where the laminate has three layers, the ratio of the thickness of the inner layer to the total thickness of the outer and intermediate layers is preferably in the range 3:1 to 3:2, for example 2:1 to 3:2, and the intermediate layer is preferably of greater thickness than the outer layer, a suitable ratio being in the range 10:1 to 2 :1, for example 6:1 to 3:1.
There is now described, by way of example and with reference to the accompanying drawings, a cricket pad according to one embodiment of the present invention. In the drawings:
Figure 1 is a front elevation of the pad shown, for the sake of convenience, in a flat configuration prior to being shaped into a leg-embracing configuration; and
Figure 2 is a perspective view of the pad in its leg-embracing configuration.
The pad comprises a laminate of first (outer) and second (inner) layers 1 0, 11 of thermoplastics material. The pad further comprises lower portion 1 0a, 11 a and upper portion lOb, 1 1 b. The lower portion, in use, protects the shin and ankle of the user and the upper portion protects the lower part of his thigh. The outer layer 10, that is the layer facing outermost when the pad is in its leg-embracing configuration, comprises an elongate sheet of polyethylene having an overall shape which is generally rectangular and having two opposed side edges 12, 13, a top edge 14 and a bottom edge 1 5. The bottom edge has formed therein a centrally disposed recess 16 to receive the upper part of the foot of the user whereby the two adjacent salient portions 1 7, 18 can provide protection for his ankle bones.In the side edges 12, 13 there are two symmetrically disposed re-entrant slots 19, 20 having enlargements 21,22 at their inner ends.
The outer layer 10 is of non-cellular polyethylene having a thickness of 1.5 mm, and the inner layer is of cellular or foam polyethylene having a thickness of 15 mm. The laminate providing layers 10 and 11 is one made by a process of flame bonding.
The polyethylene used for the outer layer conveniently has a specific gravity in the range 0.91 to 0.99. Examples of suitable polyethylenes are the low density polyethylene sold under the Trade Mark
Lintacell (specific gravity 0.93) and the high density polyethylenes sold under the Trade Mark Frelen (specific gravity 0.96) and Hilex sold by British Celanese Limited (specific gravity 0.96).
The cellular polyethylene used for the inner layer conveniently is one having a closed cell structure.
It can have, for example, a density in the range 30 to 60 kg/cm3. Examples of suitable cellular polyethylenes are Frelen 30/06 (density 30 kg/m3), Frelen 50/06 (density 50 kg/cm3, Lintacel 30/06 (density 30 kg/m3) and Alveolit of the 2000 range, for example 2015 (density 50 kg/m3).
A summary of the mechanical and physical properties of Alveolit 2000 is given below.
DIN
Standard Unit
Apparent density 53 420 kg/m3 50
Tensile strength lengthwise 5, 6
crosswise 53 571 kp/cm2 4, 0
(Specimen thickness 3 mm)
Elongation lengthwise 280
crosswise 53 571 % 210
(Specimen thickness 3 mm)
Tear resistance lengthwise 2, 8
crosswise 53 575 kp/cm 1,8
(Specimen thickness 3 mm)
Compressive strength
20% deflection 53577 kp/cm2 0,45
50% deflection 1,2
Thermal conductivity at OOC kcal/m.h.oC 0, 037
Working temperature range OC -80 up to
+80
Water vapour transmission 52 122 g/m2.24 h 1,2
(Thickness 2 mm)
A summary of the mechanical and physical properties of Hilex is as follows.
Test Unit
Density - g/cm2 0.96
Tensile yield stress ISO R 527 kg/cm2 310
Tensile modulus BS 4618 kg/cm2 11,200
Izod notched
impact strength BS 2782 J/m 480
Melt index BS 3412 g/1 0 mins. 0.6
Another suitable polyethylene for the outer layer is that sold under the trade mark RIGIDEX by B.P.
Chemicals Limited.
The shape and dimensions of the inner and outer layers is the same in the embodiment shown in the drawings.
The location of the re-entrant slots 1 9, 20 in relation to the length of the guard is such that, when the pad is fitted to a leg of the user, his knee is in the region of the zone 23 between the two slots. It is, therefore, necessary that the pad should bend in that region, and this bending is facilitated by the reentrant slots. Bending of the pad is further facilitated by arranging that the curvature of the upper portion of the pad is iess than that of the lower portion, thereby permitting the side edges of the upper portion to pass outside the side edges of the lower portion when the user bends his knees. Moreover, the upper pad portion is disposed at an angle to the lower pad portion so that, after thermo forming, the border zones 24, 25 of the upper portion overlie the corresponding border zones 26, 27 of the lower portions.The purpose of this is to ensure that when the knee of the user is bended the upper portion passes over the lower portion without the edges fouling each other.
The contiguous border zones of the lower and upper pad portions have formed therein aligned, spaced apart slots 28, 29 and 30, 31 disposed on opposite sides of the re-entrant slots 19, 20. These slots accommodate edge protectors 32, 33, 34, 35 disposed so that adjacent pairs contact each other and prevent wear of the border zones containing them.
The drawings show a single pad suited for a user's right leg. A pair of pads can, for example, comprise two identical pads, as shown, for instance, in Figures 1 and 2, or a pair can consist of two like,
though not identical, pads having such differences as may be necessary or desirable to suit right and left legs.
The pad of the drawings has a series of slots 36, 36a in the respective side margins of the pad to receive straps for securing the pad on the user's leg; and two of the straps 37, 38 are shown, strap 37 being a buckle strap and strap 38 a tongue strap for engagement with buckle strap 37. Figures 1 and 2 are to be regarded as having a buckle strap attached to each of slots 36 and a tongue strap in each of slots 36a.
The straps shown in the drawings are of a novel construction in that, instead of being adapted for attachment to the pad by stitching or riveting, they are provided with press-studs and associated studreceiving recesses by means of which they can be fixed in place.
The pad has formed in the surface of outer layer 10 shallow grooves 39 to simulate the stitching of a conventional canvas pad.
The pad can be provided with slits or other ventilation means (not shown), preferably passing through both the inner and outer sheets, to enhance the comfort of the user, especially in hot climates.
The cricket pad described above with reference to the drawings can be made by the following method. From a sheet of a flame-bonded laminate of the non-cellular and cellular polyethylene there is cut a pad, the cutting operation providing at the same time the slots 28, 29 30, 31, strap-receiving slots 36, 36a and stitching simulating grooves 30. The resulting planar pad is subjected to a thermo-forming process to give it the desired degree of curvature to provide the leg-embracing shape required of the pad, the radius of curvature of the upper portion of the pad being greater, preferably, than that of the lower portion for the reason given above. The edge protectors 32, 33, 34, 35 and straps 38, 39 can then be fitted in the respective slots to complete the pad.
The pad described above with reference to the drawings has substantial advantages over a conventional canvas pad. First, it is a weight of about half that of a conventional pad of senior grade.
Secondly, it transmits through the pad a much smaller portion of the force of a cricket ball striking its outer surface.
The following results (expressed in kilo-newtons) have been obtained using the procedure described in the Second Draft of British Standard Leg Guard dated June 1980.
Part of pad struck Pad of the Conventional
By the ball Invention Canvas pad
Instep 0.5-0.8 1.7-1.9 Shin 0.5-0.8 1.4-1.4 Knee 0.5-0.8 1.0-1.2
Claims (18)
1. A cricket pad or other leg guard formed from plastics material, comprising a first, outer layer which provides an impact-resistant surface, and a second, inner layer which provides a resilient padding for the leg of the user of the guard.
2. A leg guard according to Claim 1, in which said first and second layers are in the form of a laminate.
3. A leg guard according to Claim 2, in which the said laminate consists of said first and second layers.
4. A leg guard according to Claim 1,2 or 3, in which said first layer is of a non-cellular polyethylene or polypropylene.
5. A leg guard according to Claim 4, in which the first layer is of polyethylene having a specific gravity in the range from 0.91 to 0.99.
6. A leg guard according to any of the preceding claims, in which the said second layer is of a cellular polyethylene or polypropylene.
7. A leg guard according to Claim 6, in which said second layer is of polyethylene having a density in the range from 30 to 60 kg/m3.
8. A leg guard according to any of the preceding claims, in which the ratio of the thickness of said first and second layers is in the range from 1:12 to 1:8.
9. A leg guard according to any of Claims 2 to 8, which has been shaped from a flat sheet of said laminate under the influence of heat and moulding.
10. A leg guard according to Claim 1, in which the outer and inner layers are flame-bonded together and of substantially the same superficial dimensions; the outer layer is of non-cellular polyethylene having a specific gravity in the range from 0.91 to 0.99; the inner layer is of closed-cell cellular polyethylene having a density in the range from 30 to 60 kg/m3; and the ratio of the thickness of the outer layer to that of the inner layer is in the range from 1:9 to 1:11.
11. A cricket pad or other leg guard which comprises a lower portion to protect, in use, at least the shin of the user; and an upper portion to protect, in use, at least the lower part of the thigh of the user; and the lower and upper portions are disposed with reference to the overall dimensions of the leg guard so that, in use, the knee of the user is behind a knee zone connecting, or comprising contiguous border zones of, said lower and upper portions, the leg guard having flexibility in said knee zone to permit hinge-like movement of said lower and upper portions.
12. A leg guard according to Claim 11, in which said flexibility is provided by the use of slots or other re-entrant means extending inwardly from the side edges of the guard.
13. A leg guard according to Claim 12, in which said re-entrants each have an enlargement at their inner end.
14. A leg guard according to Claim 12 or 13, in which the curvature of the edge of the upper portion immediately above the re-entrant means is less than that of the edge of the lower portion immediately below said re-entrant means to facilitate said hinge-like movement.
15. A leg guard according to Claim 14, in which protective means are provided to protect said edges from damage by abrasion between them as a result of said hinge-like movement.
1 6. A cricket pad according to Claim 1 or 11, substantially as described herein with reference to the accompanying drawings.
1 7. A cricket pad substantially as described herein and substantially as shown in Figures 1 and 2 of the accompanying drawings.
18. A flat precursor for a cricket pad, substantially as described herein and substantially as shown in Figure 1 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8107940A GB2073009B (en) | 1980-03-29 | 1981-03-13 | Leg guards |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8010673 | 1980-03-29 | ||
| GB8107940A GB2073009B (en) | 1980-03-29 | 1981-03-13 | Leg guards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2073009A true GB2073009A (en) | 1981-10-14 |
| GB2073009B GB2073009B (en) | 1984-01-18 |
Family
ID=26275025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8107940A Expired GB2073009B (en) | 1980-03-29 | 1981-03-13 | Leg guards |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2073009B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484361A (en) * | 1983-10-13 | 1984-11-27 | Spectrum Sports, Inc. | Knee and elbow pad and method of making |
| US4484360A (en) * | 1983-10-13 | 1984-11-27 | Spectrum Sports, Inc. | Shin guard and method of making |
| GB2154124A (en) * | 1984-02-08 | 1985-09-04 | Descente Co | Ski pants |
| GB2184641A (en) * | 1985-12-24 | 1987-07-01 | Kim Roland Pearce | Padding for sporting purposes |
| EP0248498A3 (en) * | 1986-06-05 | 1988-07-27 | All Weather Sports International B.V. | A leg guard |
| EP0409965A4 (en) * | 1989-02-03 | 1992-05-13 | L'nard Associates, Inc. | Method and apparatus for preventing skin abrasions |
| GB2249942A (en) * | 1990-11-23 | 1992-05-27 | Ava | A protective article for personal wear |
| US5727252A (en) * | 1996-10-31 | 1998-03-17 | Rollerblade, Inc. | Padded knee guard |
| WO1998026923A1 (en) * | 1996-12-19 | 1998-06-25 | Kimberly-Clark Worldwide, Inc. | High intensity light resistant instrument pads |
| US5915529A (en) * | 1997-05-07 | 1999-06-29 | Rollerblade, Inc. | Joint guard |
| US6332224B1 (en) | 2000-07-13 | 2001-12-25 | Margaret A. Walker | Knee pads for infants |
| GB2380118A (en) * | 2001-09-05 | 2003-04-02 | Roger Robert Andrew Bradley | Protective leg pads |
| AU2007202579B2 (en) * | 2001-09-05 | 2008-05-22 | Aero Sports Protection Limited | Improvements in protective pads |
| WO2017098272A1 (en) * | 2015-12-11 | 2017-06-15 | University Of Dundee | Joint protector |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD404173S (en) | 1997-05-07 | 1999-01-12 | Rollerblade, Inc. | Knee guard |
| USD406407S (en) | 1997-05-07 | 1999-03-02 | Rollerblade, Inc. | Elbow guard |
-
1981
- 1981-03-13 GB GB8107940A patent/GB2073009B/en not_active Expired
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484361A (en) * | 1983-10-13 | 1984-11-27 | Spectrum Sports, Inc. | Knee and elbow pad and method of making |
| US4484360A (en) * | 1983-10-13 | 1984-11-27 | Spectrum Sports, Inc. | Shin guard and method of making |
| GB2154124A (en) * | 1984-02-08 | 1985-09-04 | Descente Co | Ski pants |
| GB2184641A (en) * | 1985-12-24 | 1987-07-01 | Kim Roland Pearce | Padding for sporting purposes |
| EP0248498A3 (en) * | 1986-06-05 | 1988-07-27 | All Weather Sports International B.V. | A leg guard |
| EP0409965A4 (en) * | 1989-02-03 | 1992-05-13 | L'nard Associates, Inc. | Method and apparatus for preventing skin abrasions |
| GB2249942A (en) * | 1990-11-23 | 1992-05-27 | Ava | A protective article for personal wear |
| GB2249942B (en) * | 1990-11-23 | 1994-09-28 | Ava | Protective articles for personal wear |
| US5727252A (en) * | 1996-10-31 | 1998-03-17 | Rollerblade, Inc. | Padded knee guard |
| WO1998026923A1 (en) * | 1996-12-19 | 1998-06-25 | Kimberly-Clark Worldwide, Inc. | High intensity light resistant instrument pads |
| US6165625A (en) * | 1996-12-19 | 2000-12-26 | Kimberly-Clark Worldwide, Inc. | Method of making high intensity light resistant instrument pads |
| US5915529A (en) * | 1997-05-07 | 1999-06-29 | Rollerblade, Inc. | Joint guard |
| US6332224B1 (en) | 2000-07-13 | 2001-12-25 | Margaret A. Walker | Knee pads for infants |
| GB2380118A (en) * | 2001-09-05 | 2003-04-02 | Roger Robert Andrew Bradley | Protective leg pads |
| GB2380118B (en) * | 2001-09-05 | 2005-08-10 | Roger Robert Andrew Bradley | Improvements in protective pads |
| AU2002300851B2 (en) * | 2001-09-05 | 2007-10-04 | Aero Sports Protection Limited | Improvements in protective gear |
| AU2007202579B2 (en) * | 2001-09-05 | 2008-05-22 | Aero Sports Protection Limited | Improvements in protective pads |
| WO2017098272A1 (en) * | 2015-12-11 | 2017-06-15 | University Of Dundee | Joint protector |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2073009B (en) | 1984-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |