Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Structure contacts nut piece side and is fixed to the nut
Patent
1979-06-11
1981-10-27
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Structure contacts nut piece side and is fixed to the nut
411338, 411213, F16B 3902
Patent
active
042970636
ABSTRACT:
A self-retaining safety bolt assembly having a headed end, a cylindrical shank, and a pin tail nut with a tubular shank telescoping over the cylindrical shank with means near the headed end to retain the tubular shank on the cylindrical shank in a hole in a workpiece. An axial passage opening into the headed end intercepts a laterally-extending passage wherein a dog is laterally reciprocable so as to be extendable beyond a maximum diameter of the cylindrical 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. The dog has a pair of followers, one on each side, bearing against the oppositely directed cam surfaces whereby the lateral position of the dog is uniquely a function of the axial position of the cam member. Bias means is provided to bias the cam member to a position corresponding to maximum extension of the dog into engagement with a groove in the tubular shank of the pin tail nut to lock the telescoping pin tail nut on the cylindrical shank.
REFERENCES:
patent: 579547 (1897-03-01), Perry
patent: 1252554 (1918-01-01), Dillon
patent: 1259214 (1918-03-01), De Roja
patent: 2906311 (1959-09-01), Boyd
patent: 3243837 (1966-04-01), Smith
patent: 3361176 (1968-01-01), Jansen
patent: 3390712 (1968-02-01), McKay
patent: 3561516 (1971-02-01), Reddy
patent: 3712356 (1973-01-01), Petroshanoff
patent: 3771410 (1973-11-01), Swindt
patent: 4016914 (1977-04-01), Zurko
Britts Ramon S.
Hi Shear Corporation
Mon Donald D.
LandOfFree
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