Class 411/985 - Bolthead- or nut-held

Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Art collection under art collection 984 in which the locking
No. of patents: 4
Last issue date: 08/25/1992

Number	Title	Issue Date
5141374	Lock nut device A lock nut device consists of a lock nut (22) and a lock spring (31). The spring is bent into an U-shape and extends in a axial plane over the nut. It has spring legs (32) lying in grooves (25) in the nut and has end portions formed for engagement with th...	08/25/1992
4940374	Locking bolts for vehicle exhaust manifold pipes An anti-rotation locking assembly for releasably fastening automotive exhaust pipes and exhaust manifolds to an engine block is disclosed comprising a threaded bolt with hex-wrenching recess and a hyperbolic locking plate with hex-stud which fits into the...	07/10/1990
4906150	Locking fastener Locking fastener comprising a threaded part such as a bolt or nut and a lock plate which fits over the bolt or nut and is prevented from rotation by engagement with a stationary object such as a protrusion on the part to be secured. The lock plate has an ...	03/06/1990
3964530	Locking cup washer A nut locking device in the form of a cup washer with a slotted base portion is secured over the end tang of an external threaded fastener so that the outer lip portion of the cup washer engages over and locks against the outer peripheral edges of a nut t...	06/22/1976

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