Fastening assembly

Details Fastening assembly Fastening assembly

1988-08-25

1989-11-21

Wilson, Neill R.

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

Externally threaded fastener element, e.g., bolt, screw, etc.

Multipart

411387, 411396, 52410, F16B 3502

Patent

active

048818615

ABSTRACT:
A fastening assembly (1) for fastening a waterproof membrane and thick insulation to a roof deck comprises a screw threaded fastener (2) having a driving head (9), a clamp plate (5) for spreading the clamping load of the fastening assembly over an area of the surface of the waterproof membrane, a clamp tube (4) having a head (19& ) and a foot (18). The foot (18) is arranged to be engaged and held by the head (19) is arranged to engage and hold the clamp plate (5). An expanding auger (3) is formed between a screw thread (7) of the fastener (2) and the foot (18& ) of the clamp tube (4) In use, the auger (3) rotates with the fastener to expand the hole in the waterproof membrane through which the fastener (2) is inserted so that it accommodates the clamp tube (4) of the fastening assembly (1).

REFERENCES:
patent: 3478639 (1969-11-01), Gruca
patent: 4380413 (1983-04-01), Dewey
patent: 4453361 (1984-06-01), Hu7lsey
patent: 4763456 (1988-08-01), Giannuzzi
patent: 4780039 (1988-10-01), Hartman

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