Washer for use with exterior insulation
AssigneeWind-Lock Corporation
InventorWilliam B. Seibert
Life of this patent
Estimating the term…
Abstract
A washer, for use with a fastener for attaching a slab of insulation and a covering mesh to a substrate, has fingers which automatically partially block its entry aperture when the fastener is tightened so that a finish applied over the washer does not fill the cavity of the washer. This reduces the conduction of heat through the insulation by way of the finish material and the fastener. It also provides an undercut surface for improved adhesion of the finish material to the washer.
Claims19
A washer for use with a fastener having a head and a shank, comprising:
- a hollow body having a central passageway extending along an axis from an entry aperture to a bottom aperture, the central passageway being capable of receiving the fastener through the entry aperture;
- an annular skirt extending in a transverse direction from the hollow body adjacent to the entry aperture;
- means within said hollow body, engageable by the head of a fastener, for preventing the head of the fastener from exiting the hollow body through the bottom aperture;
- said hollow body having a plurality of fingers extending along the central passageway, each finger having a portion located adjacent to the entry aperture;
- and
- the washer having means for causing the portion of each finger adjacent to the entry aperture to move radially inward toward said axis in response to tightening of the fastener;
- whereby when the washer is fastened against a substrate, the finger at least partially blocks the entry aperture.
An improved washer for use with a fastener to fasten an insulation product to an existing substrate, the fastener having a head and a shank, the washer having a hollow body defining a central passageway along a central axis, the central passageway has an entry aperture and a bottom aperture, the entry aperture permitting entry of the fastener through the central passageway, the hollow body having means engageable by the head of the fastener for preventing the head from exiting the hollow body through the bottom aperture, the washer having an annular skirt extending in a transverse direction from the hollow body adjacent to the entry aperture, the improvement comprising:
- a plurality of fingers extending along the central passageway, each finger integrally connected to the hollow body adjacent to the bottom aperture, and each finger having a portion located adjacent to the entry aperture;
- and
- means for causing said portion of each finger to move radially inward toward the central axis in response to tightening of the fastener;
- whereby the central passageway is closed nearest the entry aperture by the finger when the washer is fastened to the substrate through the insulation product.
A washer for use in fastening an insulation product and covering mesh to an existing substrate and to which a finish is applied, comprising:
- a hollow body having a central passageway extending along an axis and defining an entry aperture and a bottom aperture, the hollow body having a plurality of fingers extending along a portion of the central passageway;
- and
- an outer annular skirt extending transversely from the hollow body adjacent to the entry aperture;
- wherein the each finger has means for allowing the finger to extend adjacent to the central passageway when the washer is in an unfastened state and to cause the finger to extend inwardly into the central passageway when the washer is fastened against the insulation product and mesh.
Dependencies are inferred from the claim text.