|
US3000361A
|
|
Push door mechanism
|
|
US3010433A
|
|
Pneumatic motion-checking device and door operating system including same
|
|
US2893506A
|
|
Door controlling linkage
|
|
US2982825A
|
|
Ringing machine with adjustable tapered worm for eliminating backlash
|
|
US2813164A
|
|
Heavy duty treadle
|
|
US2946931A
|
|
Photoelectric control system for door operation and the like
|
|
US2794633A
|
|
Automatic disconnecting mechanism for fluid pressure operated linkage
|
|
US2921504A
|
|
Deburring device
|
|
GB778340A
|
|
Improvements in or relating to push-door control system for vehicles
|
|
US2913605A
|
|
Eddy current brake
|
|
GB786978A
|
|
Improvements in or relating to a field telephone hand set
|
|
US2888520A
|
|
Generator-transducer switching system in a telephone system
|
|
US2816563A
|
|
Quick release valve
|
|
US2832588A
|
|
Control system for power operated doors equipped with obstruction detecting means
|
|
US2813163A
|
|
Heavy duty treadle
|
|
US2874960A
|
|
Electromagnetic door check
|
|
US2866442A
|
|
Pressure motor with piston cushioning and speed control means
|
|
US2757949A
|
|
Push-door control system for vehicles
|
|
US2941795A
|
|
Door operation and control
|
|
GB753129A
|
|
Improvements in or relating to power door operating systems
|
