Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating...
Patent
1978-10-05
1981-07-14
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
411317, 411347, 411348, F16B 3932
Patent
active
042781205
ABSTRACT:
A safety bolt having a headed end, a shank, and a second end with means near the second end to hold the bolt in a hole in a workpiece. An axial passage opening into the second end intersects a laterally-extending passage spaced therefrom, and a dog fits in the laterally-extending passage wherein it is laterally reciprocable so as to be extendible beyond the maximum diameter of the shank or to be entirely retracted within it. A cam member having a pair of oppositely facing cam surfaces is axially slidable in the axial passage. A bias spring is provided to bias the cam member to a position corresponding to maximum extension of the dog. A plug is detachably attachable to the safety bolt to hold the cam member in a position respective to retraction of the dog. A projection can be provided on a nut for use with this bolt to prevent reversal of the nut, and a plurality of bias springs each with a different rate can be used.
REFERENCES:
patent: 960999 (1910-06-01), Nicholson
patent: 1597667 (1926-08-01), Blair
patent: 2327148 (1943-08-01), Yates
patent: 3145441 (1964-08-01), Strandrud
patent: 3361176 (1968-01-01), Jansen
patent: 3390712 (1968-07-01), McKay
patent: 3474506 (1969-10-01), Metz
patent: 3535750 (1970-10-01), Metz
patent: 3561516 (1971-02-01), Reddy
patent: 3712356 (1973-01-01), Petroshanoff
patent: 4112992 (1978-09-01), Wing
Hart Dale H.
Volkmann Josef F.
Britts Ramon S.
Hi Shear Corporation
Mon Donald D.
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