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US 4,393,109 AGranted
Extruded fin-type weatherstrip
OwnerGerald Kesslerinventor
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OwnerGerald Kesslerinventor
Estimating the term…
An integrally extruded all plastic "pile" weatherstrip comprises an elongated longitudinal substrate from which vertically project a plurality of integral, spaced parallel, thin, flexible, deformable, wavy S-configured fin members. The exposed upper ends of all or any desired lesser number of the fin elements may be partially slit to from 20% to 100% of the fin height to control the amount of air and water moisture infiltration through the weatherstrip. The fin element ends are slit at a desired bias angle with respect to a horizontal line lying within a horizontal plane surface in which the fin ends are located. The extrudable plastic is preferably high density polyethylene, polypropylene or polyvinyl chloride and may optionally contain an ultra-violet absorbent composition and a partially compatible lubricant. The wavy fin weatherstrip assembly may be manufactured by unbalancing an extrusion die so that the rate of plastic flow through the fin forming orifices is substantially greater than that occurring at the base or substrate forming orifice. Alternatively, the extrusion die can be built in sections and by oscillating the fin orifice section relative to a fixed base orifice section, or vice versa, the wavy fin configuration is extruded.
An integrally extruded resilient all plastic fin-type weatherstrip comprising an elongated longitudinal substrate from which integrally projects vertically therefrom at least one thin, flexible, deformable, wavy S-configured fin member, said at least one fin member being unslit along the length thereof.
An integrally extruded resilient all plastic fin-type weatherstrip comprising an elongated longitudinal substrate from which integrally projects vertically therefrom at least one thin, flexible, deformable, wavy S-configured fin member, said at least one fin member being slit to a depth of less than the full depth thereof measured from the top downwardly, said slits being spaced along the length thereof a minimum of about 0.02" apart.
An integrally extruded resilient all plastic fin-type weatherstrip comprising an elongated longitudinal substrate from which integrally projects vertically therefrom a multiplicity of spaced generally parallel thin, flexible, deformable, wavy S-configured fin members, at least some of said fin members being slit to a predetermined desired depth less than the full depth thereof, at a desired bias angle.
An integrally extruded resilient all plastic weatherstrip comprising an elongated longitudinal substrate from which integrally projects therefrom a multiplicity of spaced generally parallel thin, flexible, deformable, wavy S-configured fin members, said fin members being slit to a depth of 0% to less than the full depth thereof along the length thereof, said slits when present being spaced a minimum of about 0.02" apart.
An integrally extruded resilient all plastic fin-type weatherstrip comprising an elongated longitudinal substrate from which integrally project vertically therefrom a multiplicity of spaced generally parallel thin, flexible, deformable, wavy S-configured fin members, at least some of said fin members being slit to a predetermined desired depth at a desired bias angle, said fins being slit to varying depths.
Dependencies are inferred from the claim text.