Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member or portion thereof located between substructure and...
Patent
1993-11-01
1994-09-27
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
411383, 411546, 52693, F16B 3924, F16B 4302, E04C 302
Patent
active
053502655
ABSTRACT:
A reinforcing fitting which widely distributes lateral stresses applied to wood members at the location where the wood is bolted to another member. The connection may be a wood member bolted to concrete, or bolted to steel, or two or more wood members bolted to one another. The fitting is generally comprised of a cylindrical metal tubular member having substantial wall thickness and a smooth-walled central bore in which an appropriately sized bolt shank may be positioned. A first or top end of the tubular member is affixed with a metal plate having a multiple of spikes projecting downward from the bottom surface of the plate. The tubular member is structured for insertion into a pre-drilled circular hole in a wood member, with a second or bottom end of the tubular member extending just short of the opposite side of the wood. The spikes depending from the bottom surface of the metal plate are structured to be hammered into the wood to secure the fitting in place and to more widely distribute loads around the tubular member. A bolt is applied through the bore of the tubular member to secure the wood member to another member. The external diameter of the tubular member is substantially larger, preferably twice as large as the diameter of the bolt, and thereby greater surface area is provided for the wood to abut under lateral loading and stresses.
REFERENCES:
patent: 241626 (1881-05-01), Davenport
patent: 2092684 (1937-09-01), Uhl
patent: 3332196 (1967-07-01), Tuttle
patent: 3480061 (1969-11-01), Leistner
patent: 3946532 (1976-03-01), Gilb
patent: 3985459 (1976-10-01), Gilb
patent: 4069635 (1978-01-01), Gilb
patent: 4104843 (1978-08-01), Gilb
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