Title: Limited torque locking fuel cap

Abstract: 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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Detwiler, Timothy (Franklin Grove, IL, US)

Application Number: 591932
Filing Date: 1975-06-30
Publication_date: 1976-12-21
Assignee: E. Edelmann & Co. (Skokie, IL)
Primary Class(es): 70/171 220/210
Other Classes:
US Patent Ref:

2063708	Dec, 1936	Swilens	70/134.
3715075	Feb, 1973	Blau et al.	220/288.
3797688	Mar, 1974	Porcelli et al.	215/9.
3907155	Sep, 1975	Smith et al.	220/210.

Other Refs:
Primary Examiner: Gilliam, Paul R.
Assistant Examiner: Sakran, Victor
Attorney: Lettvin; Norman