Cotter pin guard and retainer
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United States of America Patent
Stats
-
Feb 14, 1995
Grant Date -
N/A
app pub date -
Oct 5, 1993
filing date -
Oct 5, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for guarding and retaining a cotter pin in place after insertion in a pin or bolt. The device is formed from springy sheet material, preferably in the form of a spring steel stamping. It has a washer portion with a central opening to fit over a pin or bolt and a shelf portion extending to one side. The washer portion has one or more tabs or spurs which frictionally engage the shank of a pin or bolt so as to retain the washer in place thereon. The shelf portion is joined to the washer portion by a step or shoulder. At its outer end the shelf has a fence which extends from the floor of the shelf in the same direction as the step. The step has an opening through which the shank of a cotter pin may be inserted on through the aperture in a pin or bolt. The shelf may be flexed so the fence is out of the way when a cotter pin is inserted. On release the shelf springs back in place and the fence is in position to engage the head of the cotter pin and prevent its removal. The device can be used with pins or bolts which fit the central opening in the washer portion with little clearance or which are undersized with respect to the central opening.
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