Stress plate for roof membrane fastener assembly

Details Stress plate for roof membrane fastener assembly Stress plate for roof membrane fastener assembly

1989-12-15

1991-12-03

Lindsey, Rodney M.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Washer structure

Including means for retaining washer to fastener

411368, 411160, 411 82, 411258, 52410, F16B 4300, E04B 700

Patent

active

050695894

ABSTRACT:
A disc-shaped stress plate to be utilized with a fastener having an elongated shank integral with a disc-shaped head includes a disc having an upper and lower surface with an indentation in the upper surface and a protrusion on the lower surface. The disc can also be provided with a plurality of gripping teeth on its bottom surface and a plurality of friction enhancing protrusions on its upper surface.

REFERENCES:
patent: 884290 (1908-04-01), de Oca
patent: 2046949 (1936-07-01), Horner
patent: 3179143 (1965-04-01), Schultz
patent: 4056645 (1977-11-01), Henry
patent: 4361997 (1982-12-01), DeCaro
patent: 4726164 (1988-02-01), Reinwall
patent: 4763456 (1988-08-01), Giannuzzi
patent: 4780039 (1988-10-01), Hartman
patent: 4787188 (1988-11-01), Murphy

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