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2012
|
Invention
|
Controller for a movable closure.
A method and control system for setting travel limit positions... |
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2011
|
Invention
|
Operator mechanism. An operator ratchet mechanism for effecting reciproctable lateral movement if... |
|
|
Invention
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Beam protection system for a door operator. A obstruction beam protection system for sensing an o... |
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2010
|
Invention
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Electronically powered door with a manual override mechanism. Embodiments of the resent invention... |
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|
Invention
|
An electrically powered door with a manual override mechanism. Embodiments of electric motor driv... |
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2009
|
Invention
|
A sectional door / tilt door operator unit. A sectional door/tilt door operator unit (1) is provi... |
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2008
|
Invention
|
Sensing the position of a door. A sensor assembly for a door operator having a motor (501), a dri... |
