Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Including means for retaining washer to fastener
Patent
1996-12-13
1998-01-13
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Washer structure
Including means for retaining washer to fastener
411437, 411545, 411526, F16B 2118, F16B 4300
Patent
active
057071918
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, and a hole on the main body configured for receiving the fastener. The plate is configured so that the hole is angled relative to a vertical axis of the plate for accommodating threads of the fastener so that the fastener is maintained in a generally perpendicular orientation to the main body upon the engagement of the threads of the fastener in the hole. In the preferred embodiment, the threads of the fastener have a helix angle, and the hole, which is formed in a conical depression in the plate, is angled at the same angle as the threads of the fastener.
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Hasan Riaz
Hempfling Dave C.
Buckman Thomas W.
Croll Mark W.
Illinois Tool Works Inc.
O'Brien John P.
Wilson Neill R.
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