Claims
- 1. A washer for use in attaching insulation to a roof member with a fastener having a head and an elongated shank, said washer comprising a resilient non-metallic body having a central throughbore, a shoulder formed in said throughbore for engaging the head of a fastener, said shoulder defining and separating upper and lower portions of said throughbore, said upper portion having a maximum lateral dimension greater than that of said lower portion, restraining means formed in said upper portion of said throughbore for engaging a portion of said fastener head, resilient head pushing means formed on said shoulder for urging the fastener head into engagement with said restraining means.
- 2. A washer in accordance with claim 1 wherein said restraining means comprises a radially inwardly protruding annular lip adapted to snappingly engage the head of a fastener.
- 3. A washer in accordance with claim 1 wherein said pushing means is an axially extending generally annular rib having a V-shaped cross-section tapering from a wider base portion integrally formed with said shoulder to a narrower crest.
- 4. A washer in accordance with claim 1 wherein said body has a central hub depending from one side of said washer and a flange in snapped engagement with said hub.
Parent Case Info
This is a continuation of application Ser. No. 840,152, filed Mar. 17, 1986 now U.S. Pat. No. 4,663,910.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
840152 |
Mar 1986 |
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