Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Multiple prong – e.g. – nailing plate – staple – etc.
Patent
1985-11-01
1988-01-12
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Multiple prong, e.g., nailing plate, staple, etc.
411457, 227155, F16B 1500
Patent
active
047188030
ABSTRACT:
The staple has a non-linear bright and two spaced-apart legs depending therefrom. Material weakening means, such as a pair of nicks, is in the regions of the bight adjacent to the legs. When the staple is applied, the legs are bent into a plane approximately parallel to the plane of the bight. When it is desired to remove the staple, the bight is gripped and rotated until it breaks away from the legs.
REFERENCES:
patent: Re23566 (1952-10-01), Henriksen
patent: 330444 (1885-11-01), Van Reyper
patent: 1321623 (1919-11-01), Griswold
patent: 1876322 (1932-09-01), Rudolph
patent: 1885599 (1932-11-01), Hile
patent: 2111404 (1938-03-01), Pankonin
patent: 2202905 (1940-06-01), Goodstein
patent: 2277931 (1942-03-01), Moe
patent: 2351045 (1944-06-01), Heller
patent: 2390219 (1945-12-01), LaPlace
patent: 2564900 (1951-08-01), Henriksen
patent: 3368445 (1968-02-01), Trzesniewski
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