Locking device for threaded fasteners

Details Locking device for threaded fasteners Locking device for threaded fasteners

1977-07-21

1979-01-16

McCall, James T.

Brushing, scrubbing, and general cleaning

85 50R, F16B 3928

Patent

active

041344383

ABSTRACT:
A locking device adapted for use with a bolt-and-nut type fastener, wherein the locking device comprises two annular washers (or one annular washer) and the under surface of a bolt head, the annular washers being formed with a cam face and a toothed face. The cam face thereof extends radially and outwardly from the central opening of the washer to a point less than the full width of the washer surface; and the toothed face thereof includes a plurality of radially extending teeth wherein each tooth thereof includes an outer enlarged portion for engagement with a work surface of the joint material, and an inner smaller portion adapted for engagement with the fastener, the cam surface being oppositely disposed over the inner smaller portion of the teeth, whereby the axial force applied by the fastener is transmitted from an inner radius to an outer radius of the adjoining washers, thus providing an action radius having an outwardly extended moment arm in order to apply greater force to the surface of the joint material.

REFERENCES:
patent: 2147209 (1939-02-01), Olson
patent: 2557288 (1951-06-01), Hosking
patent: 2778399 (1957-01-01), Mroz
patent: 3500886 (1970-03-01), Dvorak
patent: 3895663 (1975-07-01), Bashline et al.

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