| US 7,549,516 B2 | ||
| Elevator door interlock | ||
| Gary W Eisenhower, Jr., Freeport, Ill. (US); David E Falcon, Franklin, Wis. (US); Michael T. Bunyer, Freeport, Ill. (US); Jeffrey S Hall, Winnebago, Ill. (US); and Richard A Bear, Freeport, Ill. (US) | ||
| Assigned to Honeywell International Inc., Morristown, N.J. (US) | ||
| Filed on Feb. 11, 2005, as Appl. No. 11/57,296. | ||
| Prior Publication US 2006/0180405 A1, Aug. 17, 2006 | ||
| Int. Cl. B66B 13/02 (2006.01); B66B 13/06 (2006.01); E05C 3/06 (2006.01) | ||
| U.S. Cl. 187—331 [187/335; 292/201] | 14 Claims |
| 9. A system comprising:
a cast housing;
a cam comprising a solenoid notch wherein the cam rotates within the cast housing, wherein a cam axle mount positions the
cam, and wherein the cam locks and frees a cam actuator;
a solenoid that, when not energized, extends to directly engage the solenoid notch to lock the cam such that the cam actuator
is locked and that, when energized, retracts to allow the cam to rotate and free the cam actuator;
a spring and a ball bearing wherein the spring presses the ball bearing against the cam and wherein the cam has a cam profile
that is adapted for snap over center operation; and
a current rectifier wherein the solenoid can be energized by either AC or DC current to thereby provide an elevator door interlock.
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