Check-actuated control mechanisms – Including part locked by detent and released by check – And means to impart thrust to check to unlock part
Patent
1988-04-29
1989-05-16
Kashnikow, Andres
Check-actuated control mechanisms
Including part locked by detent and released by check
And means to impart thrust to check to unlock part
194258, A47E 700
Patent
active
048301680
ABSTRACT:
A coin and key operated cam lock comprising a cam disc mounted for rotation wherein the cam disc has a lock barrel disposed therein. A cam lever and release bar engaging ramp is provided on the cam disc which also has a coin receiving slot therein. A cam lever having a detent lug thereon is biased so that the detent lug will engage with the disc ramp to thereby releasably restrict rotation of the cam disc. A coin engaging surface is located on the underside of the lever and is engageable with a coin placed within the lock to force the detent lug out of engagement with the disc ramp to permit rotation of the cam disc to the fully locked position. The disc ramp also has stop shoulders engageable with the detent lug to prevent multiple uses of the cam lock after the coins have fallen out of the coin receiving slot. A cam release bar is moveably mounted so that it is accessible to the user from the outside of the cam lock and restricts the rotation of the cam disc from its fully locked position for easy key removal until the cam release bar is conscientiously forced out of engagement 1 with the disc ramp by the user to unlock the coin and key operated cam lock.
REFERENCES:
patent: 636962 (1899-11-01), Durham
patent: 982689 (1911-01-01), Perrin
patent: 987287 (1911-03-01), Duryea
patent: 1321298 (1919-11-01), Frix
patent: 1653487 (1927-12-01), White
patent: 2437742 (1948-03-01), Hofmann
patent: 3394790 (1968-07-01), Braun
patent: 3722652 (1973-03-01), Busch
Burkhart Patrick N.
Kashnikow Andres
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