Actuating device for a closing element movable in a vertical...
Automatic friction shoe
Balance system for sash window assembly
Block and tackle balance with integral, non-rotating pulley syst
Cable failure indicator
Coil spring counterbalance system for side loading window...
Compression seals in a double hung style window
Curl spring shoe based window balance system
Drive system for a sliding chamber door
Fenestration assembly
Frictional drop resistance for sash counterbalanced by curl...
Frictional sash balance and jamb liner
Frictional sash balance and jamb liner
Frictional sash balance and jamb liner
Hung window carrier system and method
Hurricane resistant window
Lock shoe system for heavy sash
Lock shoe system for take-out window
Metal window with offset sash and balance mechanisms
Multi-coil spring window counterbalance assembly