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US 4,890,965 AGranted
Fastener with relieved thread section ends
OwnerRobert W. Dietleininventor
Life of this patent
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Abstract
A lock nut has locking members with internal thread segments formed between slots, the segment ends being relieved to prevent galling; also, the members are deformed so that thread segments therein extend along generally circular arcs that have axes offset from the nut axis. Typically, the axes associated with the arcs on said members are at the respective sides of the body axis opposite from said respective members.
Claims7
In a lock nut, the combination comprising:
- (a) an annular body defining an axis and having an internal thread along its axial length,
- (b) locking members integral with and projecting generally axially of the body, at one end thereof, the members being circumferentially spaced about said axis, to define at least three radial slots between the members, the slots equally spaced about said axis,
- (c) the members having internal thread segments at their sides facing the axis,
- (d) the thread segments having opposite ends, circumferentially with inner edges spaced further from the body axis than the thread segment mid portions,
- (e) the members being cantilever members that taper toward said axis along member length between the slots,
- (f) each member further deformed so that thread segments thereon extend along generally circular arcs that have axes offset from said body axis,
- (g) said thread segments having arc curvature, and said body outwardly of said segments having an outward surface with curvature, said arc curvature being less than said body outward surface curvature.
4 more elements
Dependencies are inferred from the claim text.