|
US5712458A
|
|
Door sensor beam
|
|
CA2113784A1
|
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Rolling shutter governor
|
|
US5377784A
|
|
Pass door fire lintel
|
|
US4984658A
|
|
Car gate reversing edge
|
|
US4958975A
|
|
Cart wheel control for hoistway car
|
|
US4775032A
|
|
Elevator control
|
|
US4787802A
|
|
Cart wheel control for hoistway car
|
|
US4439103A
|
|
Automatic ejector system
|
|
US4302145A
|
|
Automatic drawbridge for elevator
|
|
US4148404A
|
|
Automatic loader and unloader
|
|
US3535842A
|
|
Fire-resistant removable wall panel
|
|
US3436863A
|
|
Door operating means
|
|
DE1162453B
|
|
Arrangement for position control of movable objects, in particular elevator cars, by means of ultrasonic signals
|
|
US3098992A
|
|
Position sensing and control means
|
|
US2979180A
|
|
Hand rails for moving stairs
|
|
US2860386A
|
|
Latches for counterbalanced doors
|
|
US2860872A
|
|
Cable traction drive operator
|
|
US2650729A
|
|
Dual load and unload chute device
|
|
US2673316A
|
|
Dynamic dual motor drive safety traction sheave
|
|
US2659457A
|
|
Latch for counterbalanced elevator doors
|
