Weather strip

• US 4,497,137 A
• Filed: 10/05/1982
• Issued: 02/05/1985
• Est. Priority Date: 10/05/1982
• Status: Expired due to Fees

• Current Assignee: Energy Conservation Associates Incorporated
• Original Assignee: Energy Conservation Associates Incorporated
• Inventors: Nelson, Jon N.
• Primary Examiner(s): KANNAN, PHILIP
• Application Number:
  US06/432,802
• Time in Patent Office: 854 Days
• Field of Search: 49/496, 49/475, 49/495, 49/485
• US Class Current: 49/496.1
• CPC Class Codes: E06B 7/231 with a solid sealing part
• CPC Class Codes: E06B 7/2314 characterised by the material

Abstract

A composite weather strip is disclosed having a semi-rigid elongated body and a relatively flexible extension formed in integral coplanar relation on a side edge of the body. The extension is laterally tapered to a feathered edge and has longitudinal ribs projecting from one surface of the extension. A foam tape attaches the body to one of two relatively movable surfaces, such as a frame surface and an adjoining surface of a window or door, adjacent a joint between the two surfaces. Whenever the window or door is closed, the flexible extension is engaged with the other of the two surfaces and, upon such engagement, is deflected to provide a positive seal against the passage of air through the joint in a sealing construction of exceptionally high integrity.

Claims

1. A resilient plastic weather strip comprising a semi-rigid, elongated flat attachment body and a relatively flexible extension, the flexible extension being formed in integral relation to the flat attachment body along one side edge thereof and defining a juncture between the flat attachment body and its flexible extension, the juncture defining a longitudinally extending flex axis, the flexible extension being deflectable about said longitudinally extending flex axis between a relaxed nonsealing position and a deflected sealing position, the flexible extension being tapered from said juncture to a free terminal edge and providing a variable pliancy which gradually increases in flexibility laterally across the flexible extension toward said free terminal edge, the flexible extension in its relaxed nonsealing position having one surface extending in its entirety in generally coplanar relation to a corresponding surface of the flat attachment body, the flexible extension in its deflected sealing position assuming a substantially planar condition diverging at an angle relative to the flat attachment body, the flexible extension having a plurality of longitudinally extending ribs formed on a sealing surface of the flexible extension in parallel relation to said longitudinally extending flex axis.

2. The strip of claim 1 wherein a double-faced adhesive foam tape is secured to and extends longitudinally along one surface of the flat attachment body, wherein the flexible extension is of reduced width relative to the width of the flat attachment body, wherein the strip is of uniform cross-section throughout its length, and wherein the flat attachment body and its flexible extension are formed of co-extruded polyvinyl chloride.

3. In combination, a resilient plastic weather strip comprising a semi-rigid, elongated flat attachment body and a relatively flexible extension, the flexible extension being formed in integral relation to the flat attachment body along one side edge thereof and defining a juncture between the flat attachment body and its flexible extension, the juncture defining a longitudinally extending flex axis, the flexible extension being deflectable about said longitudinally extending flex axis between a relaxed nonsealing position and a deflected sealing position, the flexible extension being generally uniformly tapered from said juncture to a free terminal edge and providing a variable pliancy which gradually increases in flexibility laterally across the flexible extension toward said free terminal edge, a fixed frame, and a closure for the frame, the flat attachment body being secured to one of the frame and closure members in adjacent parallel relation to a longitudinally extending joint therebetween, the flexible extension in its relaxed nonsealing position having one surface extending in its entirety in generally coplanar relation to a corresponding surface of the flat attachment body, the flexible extension having a sealing surface engageable with the other of the frame and closure members, the flexible extension being deflected about said longitudinally extending flex axis, upon engagement with said other of the frame and closure members, into said deflected sealing position relative to said longitudinally extending joint when the closure is moved into a closed position, the flexible extension in its deflected sealing position assuming a substantially planar condition in engagement with said other of the frame and closure members and diverging at an angle relative to the flat attachment body, the flexible extension having a plurality of longitudinally extending ribs formed on said sealing surface of the flexible extension in parallel relation to said longitudinally extending flex axis.

4. The strip of claim 3 wherein a double-faced adhesive foam tape is secured to and extends longitudinally along one surface of the flat attachment body, wherein the flexible extension is of reduced width relative to the width of the flat attachment body, wherein the strip is of uniform cross-section throughout its length, and wherein the flat attachment body and its flexible extension are formed of co-extruded polyvinyl chloride.