CA1064980A - Roller skate with leg actuated brake - Google Patents
Roller skate with leg actuated brakeInfo
- Publication number
- CA1064980A CA1064980A CA234,416A CA234416A CA1064980A CA 1064980 A CA1064980 A CA 1064980A CA 234416 A CA234416 A CA 234416A CA 1064980 A CA1064980 A CA 1064980A
- Authority
- CA
- Canada
- Prior art keywords
- wheels
- shaped member
- web
- brake
- auxiliary
- 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.)
- Expired
Links
- 210000002414 leg Anatomy 0.000 abstract description 11
- 210000003127 knee Anatomy 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 101150094640 Siae gene Proteins 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C17/00—Roller skates; Skate-boards
- A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
- A63C17/045—Roller skis
Landscapes
- Braking Arrangements (AREA)
Abstract
IMPROVED ROLLER FOOTWEAR DEVICES
Abstract Roller footwear devices, such as roller skis and roller skates, having sets of wheels on spaced apart parallel axles mounted on a web supporting foot-fastening means as well as a brake arranged to act on at least one of the wheels. A
brake-actuating device is operatively associated with the brake via an intermediate actuation device so arranged as to cause the brake-actuating device to activate the brake by action from the leg or knee region on moving the latter sub-stantially at right angles to the axles of the wheels starting from a position adopted by this region during normal operation of the device.
Abstract Roller footwear devices, such as roller skis and roller skates, having sets of wheels on spaced apart parallel axles mounted on a web supporting foot-fastening means as well as a brake arranged to act on at least one of the wheels. A
brake-actuating device is operatively associated with the brake via an intermediate actuation device so arranged as to cause the brake-actuating device to activate the brake by action from the leg or knee region on moving the latter sub-stantially at right angles to the axles of the wheels starting from a position adopted by this region during normal operation of the device.
Description
~ 1~64981~
Back~round of the Invention Field of the Invention This invention relates to roller footwear devices, such as roller skis and roller skates.
Descri tion o~ the Prior Art P
In road traffic on roller skis and roller skates, it is desirable to be able to effect controlled braking, primarily in order to avert mishaps, such as collisions, running down pedestrians and driving off the established roa~way. This applies especially to road traffic in undulating terrain. Different arran~ements are known for braking roller skis involving, for example, release by hand or with a ski pole.
Common to this type of braking arrangement is that a certain time is required to effect braking. The release with a ski pole is, moreover, difficult to carry out especially in a critical situation where rapid braking is necessary. A common disadvantage with these braking arrangements is that they place a restriction on the movement of at least one arm which ought to be free so that the runner can preserve his or her balance.
Braking arrangements are also known based on application ~y the runner's heel, for example, by twisting to the side relàtive to the normal position. However, the freedom of movement is small for this portion of the body and it can be reduced still further in an awkward situation where rapid braking is essential.
Summary of the Invention The main object of the invention is, therefore, to provide roller skis embodying brake means not burdened with the aforesaid disadvantages and which, in addition, are light in weight and simple to manufacture. Moreover, the brake means must occupy little space so as not to create problems ~06~9~
i;
in the transportation and storage oE the device.
Accordin~ to the present invention there is provided a roller ski which comprises a web; axles mounted in parallel on said web adjacent front and rear ends of the latter; two sets of wheels mounted for rotation each on a respective one of said axles of which at least the rearmost set has two wheels, the distance between said axles being greater than the dia~eter of the wheels; a binding for the foot of the skier mounted on said web between said sets o~ wheels enabling the sole of the foot to be positioned approximately at the level of said axles;
a main U-shaped member comprising two arms joined by a stem at their upper ends while their lower free ends are pivotably mounted on said web permitting said member, when not in use, to be swung forwards from a substantially upstanding position in the direction of motion of said ski and downwards against said web with an arm disposed on each longitudinal side oP the latter and, when in use, to be swung from said substantially ; upstanding position in the opposite direction as a result of the pressure exerted by the leg of the skier on being moved rearwardly into abutment with said stem; and brake means mounted on said web and adapted to be actuated by the rearward movement of said U-shaped member to apply a braking action on said rearmost set of wheels.
It has now been recognised that the portions of the human body mentioned in the last-preceding paragraph can be moved relatively freely about the anlke joint, not only in the sagittal plane but also in the transverse plane. In the sagittal plane, the leg has a sector of movement of about ninety degrees. Under normal circumstances, on roller skis, there is a sector of movement of about thirty degrees of the rearmost portion of the turn and a somewhat smaller sector ~ ?~
1064~0 of the foremost portion of the turn which are not utilized.
This movement possibility and partially also the transverse movement can be employed for actuating the main U-shaped member It is especially advantageous to arrange the release means so that on activation, it is moved against the direction the roller ski, for example, is moved in. In this way, there is utilized a relatively large free area of movement on moving the leg to the rear.
Brief Description of the Drawin~s In order that the invention can be more readily understood, convenient embodiments thereof will now be described, by way of example, with reference to the accompanying drawings in which: ~
Fig. 1 is a perspective view of a roller ski according to a first embodiment, having two rear wheels and one at the front and showing the runner's leg in the operative position, Fig. 2 is a vertical section on an enlarged scale through a portion of the roller ski of Fig. 1 and showing the brake means activated, Fig. 3 is a perspective view of a portion of a roller ski according to a second embodiment, and Fig. 4 is a perspective view, on a larger scale, of a ~ection o~ the roller ski of Fig. 3 with the release strap in the transportation position.
Description o~ Convenient Embodiments The invention is described below in connection with ; a single roller ski. It should be clear that roller skis are produced and used in pairs with most parts alike, while ~some parts can be des1gned or disposed symmetrically relative * !~
~649~0 to the s~gittal plane of the runneX. In the ~igures, two right skis are illustrated but it should be apparent from this that what is shown applles equally well to left skis.
Referring to Figs. 1-4, there is illustrated a ski with a support or web 10 in the form o a beam of hollow, aluminium profile of rectangular cross-section, in which a single front wheel 11 is located between fork ends 12 by means of an axle 13 while two rear wheels 14 are located one on each slde of the web 10 with an axle 15 which extends parallel to the axle 13. The wheels 11 and 14 can be of conventional design, for example, having a free wheel hub, a rim and a rubber track. On the web 10, there is secured a binding 16 for the runner's shoes 17 (Fig. 1), in this instance a right binding.
In Figs. 1 and 2, there is illustrated a first embodiment in which there is mounted in an opening 19 in the web 10 and just in front of the rear wheels 14, an upwardly projecting rod 18 of hollow profile. The mounting is efected by way of an axle 20 which is led through the web 10 approximately parallel to the axle 15 and held secure by a safety ring 21 (Fig. 2) on each end of the axle projecting outside the web 10. The rod 18 supports two arms 22 which, for example, can be permanently welded and which project outwards on opposite sldes of the rod radially outside the track of their respective one of the two rear wheels 14. Arms 22 which constitute the brake means are formed from a material which is suficiently resistant to wear and provides sufficient friction to give a satlsfactory braking effect. Alternatively, the arms can be replaceable or can be provided with an exchangeable friction coating (not shown).
At the upper, free end of the rod 18, there is secured . .
;,, ;~
6~9~0 with a screw 23, a brake~actuating means .in the form of a transverse rail 24 at~~~he height of the rear siAe of the runner's leg 25 (regio ~\ruris anterior). Preferably, it is positioned behind the rnost powerful muscular region of the leg but it can also lie behind the knee region of the runner (regio genu anterior) 26 or behind the lower part of the leg 25.
The forward movement of the rod 18 is limited by the edge of the opening 19 in the web 10. In order to lead it back to the rest position after activation and retain it in abutment with this edge, there is introduced on the opposite side of the opening 19 a block 27 of rubber or another elastically deformable material. In the rest position, the rod 18 forms an angle of at least ninety degrees with the front-lying portion of the web 10. In a modification of this embodiment, the rod can be dividable in order ko simplify transportation of the roller ski.
In Figs. 3 and 4, there is illustrated a second embodi~
ment in which the rod 18 and the rail 24 of the first embodiment described above are replaced by an approximately U-shaped strap 28 which is disposed with its stem 29 directed upwards relative to the web 10 and with ends 30 secured to the shaft 20 externally on the web 10. At the inner side relative to the runnerr the uppermost portion of the strap 28 is curved somewhat outwards as shown at 31. The purpose of this curve 31 is to provide a larger extension to the breadth of the stem so as to provide for the possibility of brake~actuation over a larger area of movement in a transverse direction.
Together with the strap 28, referred to below as the release strap, there are mounted on the shaft 20, the free ends of a second approximately U-shaped strap 32 which is ~, . . .
64~80 substantially shorter than the brake-actuating strap 28 and which is positioned with its stem directed up between the brake-actuating strap 28 and the rear wheels 14. Strap 32, which is referred to below as the brake strap, carries a crosswise-extending bolt 33, the outwardly proiecting ends of which serve as brake means and the central portion of which serves as an anchor ~or a stop screw 34 which extends rearwardly therefrom to and through a permanent bracket 35 fixed to the upper side of the web 10. The screw 34 carries a screw spring 36 which acts between the bracket 35 and the bolt 33 and pushes the brake strap so far forwards and away from the rear wheels as the screw 34 permits. This force can be regulated by a wing nut 37 on the screw 34. The brake-actuating st~ap 28 is freely mounted relative to the brake strap 32 but its legs will thrust against the,bolt 33 externally of the brake strap, that is on the outwardly projecting ends thereof. The brake-actuating strap 28 can be secured in khis abutment position ~Fig. 3) by way of a detachàble clamp spring 38 which is mounted with one leg to a corresponding one of the legs of the brake~actuating strap 28 and which is provided with a hook 39 which can be led down behind the stem on'the brake strap 33. When it is released from the brake strap 33, the brake-actuating strap 28 can be pivoted down towards the web 10 as shown in Fig. 9~
~n a modification of the embodiment of Figs. 3 and A, ,, the free ends of the approximately U-shaped strap 28 are mounted on the shaft 20 wlthin the free ends of the approximately U-shaped brake strap and braking is e~fected when lower ' portions of the arms of strap 28 bear directly against the stem of the brake strap causing curved end portions of said stem to bear against the rear wheels 14.~ It is also possible to ; allow the brake means to act on a disc which is connected to a rear wheel so,as to rotate therewith.
; ~ - 6 -,, .
Back~round of the Invention Field of the Invention This invention relates to roller footwear devices, such as roller skis and roller skates.
Descri tion o~ the Prior Art P
In road traffic on roller skis and roller skates, it is desirable to be able to effect controlled braking, primarily in order to avert mishaps, such as collisions, running down pedestrians and driving off the established roa~way. This applies especially to road traffic in undulating terrain. Different arran~ements are known for braking roller skis involving, for example, release by hand or with a ski pole.
Common to this type of braking arrangement is that a certain time is required to effect braking. The release with a ski pole is, moreover, difficult to carry out especially in a critical situation where rapid braking is necessary. A common disadvantage with these braking arrangements is that they place a restriction on the movement of at least one arm which ought to be free so that the runner can preserve his or her balance.
Braking arrangements are also known based on application ~y the runner's heel, for example, by twisting to the side relàtive to the normal position. However, the freedom of movement is small for this portion of the body and it can be reduced still further in an awkward situation where rapid braking is essential.
Summary of the Invention The main object of the invention is, therefore, to provide roller skis embodying brake means not burdened with the aforesaid disadvantages and which, in addition, are light in weight and simple to manufacture. Moreover, the brake means must occupy little space so as not to create problems ~06~9~
i;
in the transportation and storage oE the device.
Accordin~ to the present invention there is provided a roller ski which comprises a web; axles mounted in parallel on said web adjacent front and rear ends of the latter; two sets of wheels mounted for rotation each on a respective one of said axles of which at least the rearmost set has two wheels, the distance between said axles being greater than the dia~eter of the wheels; a binding for the foot of the skier mounted on said web between said sets o~ wheels enabling the sole of the foot to be positioned approximately at the level of said axles;
a main U-shaped member comprising two arms joined by a stem at their upper ends while their lower free ends are pivotably mounted on said web permitting said member, when not in use, to be swung forwards from a substantially upstanding position in the direction of motion of said ski and downwards against said web with an arm disposed on each longitudinal side oP the latter and, when in use, to be swung from said substantially ; upstanding position in the opposite direction as a result of the pressure exerted by the leg of the skier on being moved rearwardly into abutment with said stem; and brake means mounted on said web and adapted to be actuated by the rearward movement of said U-shaped member to apply a braking action on said rearmost set of wheels.
It has now been recognised that the portions of the human body mentioned in the last-preceding paragraph can be moved relatively freely about the anlke joint, not only in the sagittal plane but also in the transverse plane. In the sagittal plane, the leg has a sector of movement of about ninety degrees. Under normal circumstances, on roller skis, there is a sector of movement of about thirty degrees of the rearmost portion of the turn and a somewhat smaller sector ~ ?~
1064~0 of the foremost portion of the turn which are not utilized.
This movement possibility and partially also the transverse movement can be employed for actuating the main U-shaped member It is especially advantageous to arrange the release means so that on activation, it is moved against the direction the roller ski, for example, is moved in. In this way, there is utilized a relatively large free area of movement on moving the leg to the rear.
Brief Description of the Drawin~s In order that the invention can be more readily understood, convenient embodiments thereof will now be described, by way of example, with reference to the accompanying drawings in which: ~
Fig. 1 is a perspective view of a roller ski according to a first embodiment, having two rear wheels and one at the front and showing the runner's leg in the operative position, Fig. 2 is a vertical section on an enlarged scale through a portion of the roller ski of Fig. 1 and showing the brake means activated, Fig. 3 is a perspective view of a portion of a roller ski according to a second embodiment, and Fig. 4 is a perspective view, on a larger scale, of a ~ection o~ the roller ski of Fig. 3 with the release strap in the transportation position.
Description o~ Convenient Embodiments The invention is described below in connection with ; a single roller ski. It should be clear that roller skis are produced and used in pairs with most parts alike, while ~some parts can be des1gned or disposed symmetrically relative * !~
~649~0 to the s~gittal plane of the runneX. In the ~igures, two right skis are illustrated but it should be apparent from this that what is shown applles equally well to left skis.
Referring to Figs. 1-4, there is illustrated a ski with a support or web 10 in the form o a beam of hollow, aluminium profile of rectangular cross-section, in which a single front wheel 11 is located between fork ends 12 by means of an axle 13 while two rear wheels 14 are located one on each slde of the web 10 with an axle 15 which extends parallel to the axle 13. The wheels 11 and 14 can be of conventional design, for example, having a free wheel hub, a rim and a rubber track. On the web 10, there is secured a binding 16 for the runner's shoes 17 (Fig. 1), in this instance a right binding.
In Figs. 1 and 2, there is illustrated a first embodiment in which there is mounted in an opening 19 in the web 10 and just in front of the rear wheels 14, an upwardly projecting rod 18 of hollow profile. The mounting is efected by way of an axle 20 which is led through the web 10 approximately parallel to the axle 15 and held secure by a safety ring 21 (Fig. 2) on each end of the axle projecting outside the web 10. The rod 18 supports two arms 22 which, for example, can be permanently welded and which project outwards on opposite sldes of the rod radially outside the track of their respective one of the two rear wheels 14. Arms 22 which constitute the brake means are formed from a material which is suficiently resistant to wear and provides sufficient friction to give a satlsfactory braking effect. Alternatively, the arms can be replaceable or can be provided with an exchangeable friction coating (not shown).
At the upper, free end of the rod 18, there is secured . .
;,, ;~
6~9~0 with a screw 23, a brake~actuating means .in the form of a transverse rail 24 at~~~he height of the rear siAe of the runner's leg 25 (regio ~\ruris anterior). Preferably, it is positioned behind the rnost powerful muscular region of the leg but it can also lie behind the knee region of the runner (regio genu anterior) 26 or behind the lower part of the leg 25.
The forward movement of the rod 18 is limited by the edge of the opening 19 in the web 10. In order to lead it back to the rest position after activation and retain it in abutment with this edge, there is introduced on the opposite side of the opening 19 a block 27 of rubber or another elastically deformable material. In the rest position, the rod 18 forms an angle of at least ninety degrees with the front-lying portion of the web 10. In a modification of this embodiment, the rod can be dividable in order ko simplify transportation of the roller ski.
In Figs. 3 and 4, there is illustrated a second embodi~
ment in which the rod 18 and the rail 24 of the first embodiment described above are replaced by an approximately U-shaped strap 28 which is disposed with its stem 29 directed upwards relative to the web 10 and with ends 30 secured to the shaft 20 externally on the web 10. At the inner side relative to the runnerr the uppermost portion of the strap 28 is curved somewhat outwards as shown at 31. The purpose of this curve 31 is to provide a larger extension to the breadth of the stem so as to provide for the possibility of brake~actuation over a larger area of movement in a transverse direction.
Together with the strap 28, referred to below as the release strap, there are mounted on the shaft 20, the free ends of a second approximately U-shaped strap 32 which is ~, . . .
64~80 substantially shorter than the brake-actuating strap 28 and which is positioned with its stem directed up between the brake-actuating strap 28 and the rear wheels 14. Strap 32, which is referred to below as the brake strap, carries a crosswise-extending bolt 33, the outwardly proiecting ends of which serve as brake means and the central portion of which serves as an anchor ~or a stop screw 34 which extends rearwardly therefrom to and through a permanent bracket 35 fixed to the upper side of the web 10. The screw 34 carries a screw spring 36 which acts between the bracket 35 and the bolt 33 and pushes the brake strap so far forwards and away from the rear wheels as the screw 34 permits. This force can be regulated by a wing nut 37 on the screw 34. The brake-actuating st~ap 28 is freely mounted relative to the brake strap 32 but its legs will thrust against the,bolt 33 externally of the brake strap, that is on the outwardly projecting ends thereof. The brake-actuating strap 28 can be secured in khis abutment position ~Fig. 3) by way of a detachàble clamp spring 38 which is mounted with one leg to a corresponding one of the legs of the brake~actuating strap 28 and which is provided with a hook 39 which can be led down behind the stem on'the brake strap 33. When it is released from the brake strap 33, the brake-actuating strap 28 can be pivoted down towards the web 10 as shown in Fig. 9~
~n a modification of the embodiment of Figs. 3 and A, ,, the free ends of the approximately U-shaped strap 28 are mounted on the shaft 20 wlthin the free ends of the approximately U-shaped brake strap and braking is e~fected when lower ' portions of the arms of strap 28 bear directly against the stem of the brake strap causing curved end portions of said stem to bear against the rear wheels 14.~ It is also possible to ; allow the brake means to act on a disc which is connected to a rear wheel so,as to rotate therewith.
; ~ - 6 -,, .
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Roller ski which comprises a web; axles mounted in parallel on said web adjacent front and rear ends of the latter; two sets of wheels mounted for rotation each on a respective one of said axles of which at least the rearmost set has two wheels, the distance between said axles being greater than the diameter of the wheels; a binding for the foot of the skier mounted on said web between said sets of wheels enabling the sole of the foot to be positioned approximately at the level of said axles; a main U-shaped member comprising two arms joined by a stem at their upper ends while their lower free ends are pivotably mounted on said web permitting said member, when not in use, to be swung forwards from a substantially upstanding position in the direction of motion of said ski and downwards against said web with an arm disposed on each longitudinal side of the latter and, when in use, to be swung from said substantially upstanding position in the opposite direction as a result of the pressure exerted by the leg of the skier on being moved rearwardly into abutment with said stem; and brake means mounted on said web and adapted to be actuated by the rearward movement of said U-shaped member to apply a braking action on said rearmost set of wheels.
2. The roller ski as claimed in claim 1, wherein the brake means comprises an auxiliary U-shaped member comprising two arms joined by a stem at their upper ends while their lower, free ends are pivotably mounted on said web adjacent said rearmost set of wheels, said member being spring-loadedly urged forwardly and away from said wheels and positioned in the rearward path of movement of the main U-shaped member so as to be abuttably swingable rearwardly thereby against the spring loading to make braking contact with said rearmost set of wheels.
3. The roller ski as claimed in claim 2, wherein the free ends of the main U-shaped member are mounted outside the free ends of the auxiliary U-shaped member on a common shaft, at least one of the arms of the auxiliary U-shaped member having a brake element projecting outwardly therefrom parallel to the axle of the rearmost set of wheels, said element being adapted to brakingly abut one of the two wheels of said rearmost set on rearwardly swinging said auxiliary U-shaped member.
4. The roller ski as claimedin claim 3, wherein two brake elements form a portion of a continuous bar which passes through the arms of the auxiliary U-shaped member.
5. The roller ski as claimed in claim 2, wherein the free ends of the main U-shaped member are mounted inside the free ends of the auxiliary U-shaped member being adapted on rearward swinging of the latter to bear directly against the stem of said auxiliary U-shaped member to cause portions of said stem to bear directly against the two wheels of the rearmost set.
6. The roller ski as claimed in claim 1, wherein, in use, the arms of said main U-shaped member are resiliently and detachably connected to the stem of the auxiliary U-shaped member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA234,416A CA1064980A (en) | 1975-08-28 | 1975-08-28 | Roller skate with leg actuated brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA234,416A CA1064980A (en) | 1975-08-28 | 1975-08-28 | Roller skate with leg actuated brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064980A true CA1064980A (en) | 1979-10-23 |
Family
ID=4103926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA234,416A Expired CA1064980A (en) | 1975-08-28 | 1975-08-28 | Roller skate with leg actuated brake |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1064980A (en) |
-
1975
- 1975-08-28 CA CA234,416A patent/CA1064980A/en not_active Expired
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