03998078 is referenced by 26 patents and cites 4 patents.

A limited torque cap is provided with a construction wherein a cam ring is located concentrically within a plurality of at least three radial movable jaws, normally biased inwardly and arranged to provide a driving connection with the cam ring until a predetermined level of torque is applied to the ring-jaw connection. A further construction is provided for effecting axial movement of the cam ring relative to the jaw members after a predetermined torque is achieved, whereby to prevent re-coupling of the cam ring and jaws and effectively "locking" the cap against further tightening to its connection and against removal. An "unlocking" feature permits selective restoration of the ring-jaw connection.

Title
Limited torque locking fuel cap
Application Number
5/591932
Publication Number
3998078
Application Date
June 30, 1975
Publication Date
December 21, 1976
Inventor
Timothy Detwiler
Franklin Grove
IL, US
Agent
Norman Lettvin
Assignee
E Edelmann & Co
IL, US
IPC
B65D 55/14
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