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Class Information
Number: 49/118
Name: Movable or removable closures > Closures interconnected for concurrent movement > Opposed similar movement > Motor driven
Description: Device provided with a motor, i.e., powered means, other than a mere spring, for imparting movement to the closures.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8677693 Door assembly including a sensor for controlling automated door movement Mar. 25, 2014
8661731 Electric door-locking system using a cam Mar. 4, 2014
8661732 Electric door-locking apparatus, and electric door comprising same Mar. 4, 2014
8661733 Electrical door-locking device Mar. 4, 2014
8615970 Panel assemblies having controllable surface properties Dec. 31, 2013
8484892 Electric door operator Jul. 16, 2013
8448751 Elevator door system May. 28, 2013
8443549 Sliding door with large opening May. 21, 2013
8424244 Simultaneous displacement device for sliding doors Apr. 23, 2013
8390219 Door operator with electrical back check feature Mar. 5, 2013
8291642 Movable barrier operator synchronization system and method Oct. 23, 2012
8269600 Method and apparatus for automated control of a secured area Sep. 18, 2012
8171672 Output shaft, teeter lever and pinion gear arrangement for pneumatic differential engine May. 8, 2012
8151519 Power sliding window assembly with caps Apr. 10, 2012
8136299 Sliding door opening/closing device for vehicle Mar. 20, 2012
7992346 Sliding door system having a locking mechanism Aug. 9, 2011
7971391 Movable body driving apparatus Jul. 5, 2011
7946079 Electrically driven entryway actuation system May. 24, 2011
7733237 Signaling device and method of controlling the device Jun. 8, 2010
7681695 Method of modernizing the car door system of an elevator, and modernizing constructional set for carrying out the method Mar. 23, 2010
7578097 Inflatable door seal Aug. 25, 2009
7370731 Device for connecting a car door with a shaft door and for locking and unlocking the doors, a device for emergency unlocking of a car door and a method for emergency unlocking of a car door May. 13, 2008
7290369 Device for the synchronized actuation of sliding doors Nov. 6, 2007
7254918 Emergency unlocking device for locking and unlocking systems for swinging sliding doors, in particular of rail vehicles Aug. 14, 2007
7252179 Elevator-door latching and opening device Aug. 7, 2007
7162835 Gravity safety door for an apparatus for manufacturing or inspecting semiconductors Jan. 16, 2007
7059959 Closure for at least one opening Jun. 13, 2006
7059084 Garage door opener Jun. 13, 2006
7040056 Gear shaft assembly May. 9, 2006
7013605 Door suspension apparatus Mar. 21, 2006
6983565 Air heated, flexible door panel Jan. 10, 2006
6955009 Power slider window assembly Oct. 18, 2005
6943515 Controller of automotive power door Sep. 13, 2005
6918211 Door closing device Jul. 19, 2005
6832449 Door suspension system Dec. 21, 2004
6810622 Power sliding cab window Nov. 2, 2004
6799393 Double trolley overhead door operator Oct. 5, 2004
6792717 Vehicle door operating mechanism Sep. 21, 2004
6718694 Drive nut assembly for a door operator Apr. 13, 2004
6708448 Drive unit for doors, especially elevator doors having a non-rectilinear profile Mar. 23, 2004
6708449 Two motor arrangement for a door operator Mar. 23, 2004
6688042 Central lock mechanism Feb. 10, 2004
6446389 Tandem sliding door operator Sep. 10, 2002
6425820 Mine door power drive system Jul. 30, 2002
6405782 Transmission system for a motor-driven blind Jun. 18, 2002
6324787 Adapter for electric garage door openers Dec. 4, 2001
6324789 Encased overhead door operator having threadably attached mounts Dec. 4, 2001
6304003 Locking device, in particular for a vehicle Oct. 16, 2001
6278376 Trapped object release system for a transit vehicle door Aug. 21, 2001
6189265 One- or two-leaf sliding door, swinging door or pocket door Feb. 20, 2001

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