GB2097848A

GB2097848A - Improved sealing element

Info

Publication number: GB2097848A
Application number: GB8212672A
Authority: GB
Original assignee: KIRKCALDY ANGUS FRASER
Current assignee: KIRKCALDY ANGUS FRASER
Priority date: 1981-05-01
Filing date: 1982-04-30
Publication date: 1982-11-10
Also published as: GB2097848B

Abstract

A weatherstrip or draught- proofing sealing element for doors or windows comprises a rigid, grooved base member (1) and a flexible tongued sealing strip (2) slidably received, tongue-in-groove, in the base member (1). The sealing strip (2) has a rearwardly extending fin (5) which, in use of the sealing element, is designed to be clamped between a backing support member e.g. a door frame and the base member (1) when the latter is fixed to the support member. <IMAGE>

Description

SPECIFICATION Improved sealing element This invention relates to an improved weatherstrip or draught-proofing sealing element for doors or windows. The invention concerns a sealing element of the kind comprising a rigid base member and a flexible sealing strip slidably mounted on the base member.

According to one aspect of the invention a weather-strip or draught-proofing sealing element comprises a rigid grooved base member and a flexible tongued sealing strip slidably received, tongue-in-groove, in the base member, the strip having a rearwardly extending fin which is designed, when the strip is received tongue-ingroove in the base member and the latter is fixed to a support member, e.g. a door frame or door, to be clamped between the base member and the support member.

Suitably the said fin at least partly overlaps a rear surface of the base member.

Typically the said fin represents an edge extremity of the strip.

Conveniently the sealing strip has shoulder regions on either side of said tongue, one of said shoulder regions defining the said fin. Suitably the strip has, in cross-section, an arrowhead configuration with the said shoulder regions representing the widest part of the arrow head, the arrowhead being inclined at between 300 and 600 to a plane of symmetry of the tongue.

Conveniently the said one shoulder region which defines said fin extends further from the plane of symmetry of the tongue than the other shoulder region for the reason hereafter to be described.

The base member is conveniently a one-piece extrusion of plastics or metal alloy and the sealing strip is conveniently fabricated from a flexible rubber or rubber-like material (e.g. neoprene or PVC) and may also be extruded.

The accompanying drawing shows, by way of example, one embodiment of sealing element according to the invention.

Figure 1 is a perspective view of the sealing element, and Figure 2 is a section, on an enlarged scale, showing how the sealing element is used in a door frame.

The element shown in the drawing comprises a rigid base member 1 and a flexible sealing strip 2, a groove 3 in the base member 1 receiving a tongue 4 on the strip 2. On either side of the tongue 4, the strip 2 defines shoulder regions 5, 6, the shoulder region 5 defining a fin which represents one edge extremity of the strip. The strip 2 narrows from the shoulder regions 5, 6 to define a tapering blade 7 terminating in an outer edge 8. The edge 8 defines the other edge extremity of the strip.The angle 8 between the central plane of the blade 7 and the rear surface 10 of the base member 1 (or the plane of symmetry of the tongue 4) is suitably between 300 and 600, typically 450. The shoulder region 5 is larger than the shoulder region 6 and projects a short distance 'x' beyond the plane of the rear surface 10 of the base member in the unmounted condition of the sealing element.

Figure 2 shows how the element of Figure 1 is mounted in a door frame 1 1 by means of screws passing through holes 9 in the base member 1.

From Figure lit will be seen that the fin or shoulder region 5 extends rearwardly and overlaps part of the rear surface 10 of the base member 1.

Thus when the rear surface 10 of the base member is pressed into contact with the door frame 11, during fixing of the base member 1 to the door frame 1 , the shoulder region 5 is compressed, distorting the strip 2 in the region of its sliding engagement with the base member 1 thereby clamping and frictionally locking the strip 2 in place.

Since the angling of the blade 2 is made with respect to the tongue 4, the base member 1 can be of a design previously used for conventional non-angled hollow sealing strips.

The base member 1 may be made of a plastics material or a metal alloy and is typically extruded.

The sealing strip 2 is suitably fabricated from a flexible rubber or rubber-like material (e.g.

neoprene, PVC or nitrile vinyl) and may also be extruded.

In certain applications it may be desirable to mount the sealing element along an edge of the door instead of to the door frame. The invention may also be applied to sealing openable windows.

1. A weatherstrip or draught-proofing sealing element comprising a rigid grooved base member and a flexible tongued sealing strip slidably received, tongue-in-groove, in the base member, the strip having a rearwardly extending fin which is designed, when the strip is received tongue-ingroove in the base member and the latter is fixed to a support member, to be clamped between the base member and the support member.

2. A sealing element according to claim 1, in which the said fin at least partly overlaps a rear surface of the base member when the sealing strip is received tongue-in-groove in the base member.

3. A sealing element according to claim 1 or 2, in which the sealing strip has shoulder regions on either sides of its tongue, one of said shoulder regions defining the said fin.

4. A sealing element according to claim 3, in which the sealing strip has, in cross-section, an arrowhead configuration with the said shoulder regions representing the widest part of the arrowhead, the arrowhead being inclined at between 300 and 600 to a plane of symmetry of the tongue.

5. A sealing element according to claim 4, in which the said one shoulder region which defines said fin extends further from the plane of symmetry of the tongue than the other shoulder region.

6. A sealing element according to any of the preceding claims, in which the base member is

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improved sealing element This invention relates to an improved weatherstrip or draught-proofing sealing element for doors or windows. The invention concerns a sealing element of the kind comprising a rigid base member and a flexible sealing strip slidably mounted on the base member. According to one aspect of the invention a weather-strip or draught-proofing sealing element comprises a rigid grooved base member and a flexible tongued sealing strip slidably received, tongue-in-groove, in the base member, the strip having a rearwardly extending fin which is designed, when the strip is received tongue-ingroove in the base member and the latter is fixed to a support member, e.g. a door frame or door, to be clamped between the base member and the support member. Suitably the said fin at least partly overlaps a rear surface of the base member. Typically the said fin represents an edge extremity of the strip. Conveniently the sealing strip has shoulder regions on either side of said tongue, one of said shoulder regions defining the said fin. Suitably the strip has, in cross-section, an arrowhead configuration with the said shoulder regions representing the widest part of the arrow head, the arrowhead being inclined at between 300 and 600 to a plane of symmetry of the tongue. Conveniently the said one shoulder region which defines said fin extends further from the plane of symmetry of the tongue than the other shoulder region for the reason hereafter to be described. The base member is conveniently a one-piece extrusion of plastics or metal alloy and the sealing strip is conveniently fabricated from a flexible rubber or rubber-like material (e.g. neoprene or PVC) and may also be extruded. The accompanying drawing shows, by way of example, one embodiment of sealing element according to the invention. Figure 1 is a perspective view of the sealing element, and Figure 2 is a section, on an enlarged scale, showing how the sealing element is used in a door frame. The element shown in the drawing comprises a rigid base member 1 and a flexible sealing strip 2, a groove 3 in the base member 1 receiving a tongue 4 on the strip 2. On either side of the tongue 4, the strip 2 defines shoulder regions 5, 6, the shoulder region 5 defining a fin which represents one edge extremity of the strip. The strip 2 narrows from the shoulder regions 5, 6 to define a tapering blade 7 terminating in an outer edge 8. The edge 8 defines the other edge extremity of the strip.The angle 8 between the central plane of the blade 7 and the rear surface 10 of the base member 1 (or the plane of symmetry of the tongue 4) is suitably between 300 and 600, typically 450. The shoulder region 5 is larger than the shoulder region 6 and projects a short distance 'x' beyond the plane of the rear surface 10 of the base member in the unmounted condition of the sealing element. Figure 2 shows how the element of Figure 1 is mounted in a door frame 1 1 by means of screws passing through holes 9 in the base member 1. From Figure lit will be seen that the fin or shoulder region 5 extends rearwardly and overlaps part of the rear surface 10 of the base member 1. Thus when the rear surface 10 of the base member is pressed into contact with the door frame 11, during fixing of the base member 1 to the door frame 1 , the shoulder region 5 is compressed, distorting the strip 2 in the region of its sliding engagement with the base member 1 thereby clamping and frictionally locking the strip 2 in place. Since the angling of the blade 2 is made with respect to the tongue 4, the base member 1 can be of a design previously used for conventional non-angled hollow sealing strips. The base member 1 may be made of a plastics material or a metal alloy and is typically extruded. The sealing strip 2 is suitably fabricated from a flexible rubber or rubber-like material (e.g. neoprene, PVC or nitrile vinyl) and may also be extruded. In certain applications it may be desirable to mount the sealing element along an edge of the door instead of to the door frame. The invention may also be applied to sealing openable windows. CLAIMS

6. A sealing element according to any of the preceding claims, in which the base member is extruded from plastics or metal alloy.

7. A sealing element according to any of the preceding claims, in which the sealing strip is fabricated from a flexible rubber or rubber-like material.

8. A sealing element according to any of the preceding claims, in which the sealing strip is extruded.

9. A weatherstrip or draught-proofing sealing element comprising a rigid grooved base member and a flexible tongued sealing strip slidably received, tongue-in-groove, in the base member, the strip having shoulder regions on either side of the tongue, only one of which shoulder regions is defined by a fin whose free edge represents an edge extremity of the strip, said fin being designed, when the strip is received tongue-ingroove in the base member and the latter is fixed to a support member, to be clamped between the base member and the support member.

9. A weatherstrip or draught-proofing sealing element constructed and arranged substantially as herein described with reference to, and as illustrated in, Figures 1 and 2 of the accompanying drawing.

10. A weatherstrip or draught-proofing sealing element comprising a rigid grooved base member and a flexible tongued sealing strip slidably received, tongue-in-groove, in the base member, the strip having shoulder regions on either side of the tongue, only one of which shoulder regions represents an edge extremity of the strip.

New claims or amendments to claims filed on 4th August 1982 Superseded claims 1-10 New or amended claims:

1. A weatherstrip or draught-proofing sealing element comprising a rigid grooved base member and a flexible tongued sealing strip slidably received, tongue-in-groove, in the base member, the strip having shoulder regions on either sides of its tongue, one of said shoulder regions being defined by a rearwardly extending fin which is designed, when the strip is received tongue-ingroove in the base member and the latter is fixed to a support member, to be clamped between the base member and the support member.

3. A sealing element according to claim 1 or 2, in which the sealing strip has, in cross-section, an arrowhead configuration with the said shoulder regions representing the widest part of the arrowhead, the arrowhead being inclined at between 300 and 600 to a plane of symmetry of the tongue.

4. A sealing element according to claim 3, in which the said one shoulder region defined by said fin extends further from the plane of symmetry of the tongue than the other shoulder region.

5. A sealing element according to any of the preceding claims, in which the base member is extruded from plastics or metal alloy.

6. A sealing element according to any of the preceding claims, in which the sealing strip is fabricated from a flexible rubber or rubber-like material.

7. A sealing element according to any of the preceding claims, in which the sealing strip is extruded.

8. A weatherstrip or draught-proofing sealing element constructed and arranged substantially as herein described with reference to, and as illustrated in, Figures 1 and 2 of the accompanying drawing.