| 摘要 |
<p>A coin and key operated cam lock (20) comprises a rotatable cam disc (54) that has lock barrel (56), a cam lever and release bar engaging ramp (60) and a coin receiving slot (74). A cam lever (80) having a detent lug (88) is biased into engagement with the disc ramp to releasably restrict rotation of the cam disc. A coin engaging surface (84) on the underside of the lever is engageable with a coin to disengage the lug to permit rotation of the cam disc to the locked position. The disc ramp includes stop shoulders (68, 70) engageable with the lug to prevent multiple uses of the lock in the absence of coins. A cam release bar (100) accessible from outside the lock restricts rotation of the cam disc from its locked position for key removal until the cam release bar is conscientiously disengaged with the disc ramp to unlock the cam lock.</p> |
