Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member preassembled with substructure at through-passage or...
Patent
1990-06-29
1992-01-21
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member preassembled with substructure at through-passage or...
411 14, 411353, 4034081, F16B 3900
Patent
active
050824066
ABSTRACT:
A self locking panel fastener comprising a receptacle connected to one of the two panels being secured together, the receptacle having an internally threaded nut portion, an externally threaded stud having a head portion extendible through the apertures of the panels, a shaped end portion and a bore formed therein; a first locking member within said receptacle having a shaped aperture and sized to receive the shaped end portion of the stud to drivingly connect the first locking member and the stud; a second locking member mounted within the receptacle for generally axial movement relative to the nut portion; a spring member for forcing the second locking member into engagement with the first locking member to form a locking connection between the stud and the second locking member; and a member for driving the second locking member generally axially relative to the first locking member against the force of the spring to break the locking connection and to allow counterrotation of the stud relative to the nut portion to allow unscrewing of the stud from the nut portion, the driving member having a first position within the bore when the stud is engaged with the receptacle and a second position when the stud is disengaged from the receptacle.
REFERENCES:
patent: 4191236 (1980-03-01), Duran
patent: 4828442 (1989-05-01), Duran
patent: 4884930 (1989-12-01), Dobbeler
Keschner Irving
VSI Corporation
Wilson Neill R.
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