Door closing device with a belt-shaped spiral spring
Door closing mechanism
Door operating mechanism
Door operator and process for operation of a door operator
Door retaining device
Door return apparatus
Door security track
Drive system for a door or window and method of operating same
Energy saver sliding door closer including a valved weight
Gate closer apparatus
Gate closure mechanism
High performance cooling device with side mount fan
Ice discharge apparatus of ice dispenser
Jamb plate for door closer
Locating structure of oil pressure door closer
Mechanical door closer
Non-rotating pinion cap
Opening and closing apparatus
Overhead door closer with slide arm assembly
Overhead door spring shield system