Plug door operating and moving mechanism

Plug for operatively connecting torsion springs to overhead...

Plug with abutment flange for abutting spring tail of...

Plug with holding means for counterbalancing mechanism, door...

Plug with safety means for use with counterbalancing systems...

Plug with special threads

Pneumatic car trunk opener

Pneumatic cylinder and piston assembly especially for...

Pneumatic door operator

Pneumatic door operator

Pneumatic door operator having novel pneumatic actuator and...

Portable crank window securing device

Portal covering device having a handle based drive mechanism

Position control hydraulic snubber

Positional control device for sectional doors

Power actuated hinge device

Power actuated operator for windows and the like

Power adjustment size indicator for a door closer

Power apparatus for intermittently powered equipment

Power beam for rotating structural member