Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1996-08-01
1997-12-23
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5714, 81 573, B25B 2100
Patent
active
056997027
ABSTRACT:
There is disclosed an improvement in rotational wrenching tools used in the aerospace industry to apply a fastener nut to a fastener pin at a limiting, preload torsion. The pins used for the fasteners have an end recess which receives a rotational stationary key that is supported in the tool by a key holder which is slidably received in a central passage of the rotationally driven socket sleeve of the tool. This invention provides a first rotational detent at the forward end of the key holder and the central through passage and a first spring to bias the key holder axially forward into engagement with said first rotational detent to cause the key holder to rotate with the sleeve and thereby facilitate engagement and disengagement of the key with the fasteners. The invention also provides a second rotational detent at the rear end of the key holder and the housing to rotationally immobilize said key holder during run-up of the fastener nuts on the fastener pins.
REFERENCES:
patent: 2882773 (1959-04-01), Wing
patent: 3247741 (1966-04-01), Batten
patent: 4538483 (1985-09-01), Batten
patent: 5553519 (1996-09-01), Petht, Jr.
Fairchild Holding Corp.
Meislin D. S.
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