Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Including means for retaining washer to fastener
Patent
1997-08-07
1999-06-01
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Washer structure
Including means for retaining washer to fastener
411368, F16B 4300
Patent
active
059082780
ABSTRACT:
A stress plate for use with a threaded fastener for securing relatively soft insulation to a solid base, such as in a roofing environment, includes a generally planar main body with an underside, an aperture on the main body configured for receiving the fastener, and a sleeve circumscribing the aperture and depending from the underside a sufficient distance to receive the fastener and maintain the fastener perpendicular to the plate, especially when the plate is located intermediate the fastener ends. In the preferred embodiment, the fastener is threaded with a defined pitch of the thread, and the sleeve is dimensioned to span at least one pitch of the fastener.
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Hasan S. Riaz
Paul Sigismund G.
Estremsky Gary
Illinois Tool Works Inc.
Saether Flemming
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