A chain operator housing

A device for controlling opening and closing of moveable...

A device for operating by motor a section door, a swinging...

A door closer

A door closing device

A drive device for moving an object

A garage door opener

A handle

A method and apparatus for a distal object manipulation tool

A method for controlling coming and going personnel, and a...

A method for mounting a drive assembly for door and window...

A remote body detection system for a door

A rotary window operator

A safety device for a door

A spring mounting arrangement for a sash window...

A spring mounting arrangement for a sash window...

A swing cover door prop device for an electric coupler used...

A window opening and closing device

A window operator

A window operator