Bolt guard

Details Bolt guard Bolt guard

1987-03-27

1988-11-29

Smith, Gary L.

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

Headed fastener element with nut, washer, securing means or cap

Lap bolt or fastener

411908, 174 45R, 174138D, 4034081, 403388, F16B 2100

Patent

active

047877936

ABSTRACT:
A bolt guard assembly utilizes a central sleeve and first and second end caps to separate a metal fastening nut and bolt from a pair of wood products that have been treated with a preservative. The bolt guard assembly is formed of a plastic material and prevents the metal fastener from coming into contact with the treated wood products. The central sleeve is sized to telescopingly receive crimped barrel ends of the two end caps. Each of these end caps is structured having a fastener head or nut receiving pocket which receives the head or nut of the fastener and isolates them from the wood. Fastener life is greatly increased through use of the bolt guard assembly.

REFERENCES:
patent: Re27085 (1971-03-01), Weidner, Jr.
patent: 625230 (1899-05-01), Wiont
patent: 2614729 (1952-10-01), Jung
patent: 2723048 (1955-11-01), Welch
patent: 2915152 (1959-12-01), Graham
patent: 3299766 (1967-01-01), Gould et al.
patent: 3339953 (1967-09-01), Bohn
patent: 3457823 (1969-07-01), Dillon
patent: 3541917 (1970-11-01), VanDouwen et al.
patent: 3889569 (1975-06-01), Fanciullo
patent: 4310273 (1982-01-01), Kirrish
patent: 4490083 (1984-12-01), Rebish
patent: 4582462 (1986-04-01), Thiel

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