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Class Information
Number: 49/116
Name: Movable or removable closures > Closures interconnected for concurrent movement > Opposed similar movement
Description: Device wherein the closures move in the same manner but in a reverse direction in their opening movement.










Sub-classes under this class:

Class Number Class Name Patents
49/123 Cable interconnected 41
49/119 Counterbalance effect derived from opposed closure 4
49/122 Lever interconnected 27
49/118 Motor driven 111
49/117 With actuator on opposite approaches 6


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8677693 Door assembly including a sensor for controlling automated door movement Mar. 25, 2014
8678141 Electromagnetic coupling with a slider layer 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
8510991 French door hinge system for oven Aug. 20, 2013
8484892 Electric door operator Jul. 16, 2013
8448997 Sliding door lock with dual break-out release May. 28, 2013
8429929 Flexible door panel cold storage door system Apr. 30, 2013
8407941 Driving device for driving two door panels to synchronously move Apr. 2, 2013
8333035 Door assembly including a sensor for controlling automated door movement Dec. 18, 2012
8269600 Method and apparatus for automated control of a secured area Sep. 18, 2012
8151519 Power sliding window assembly with caps Apr. 10, 2012
8136299 Sliding door opening/closing device for vehicle Mar. 20, 2012
7941973 Synchronized actuation system for sliding doors May. 17, 2011
7757437 Resilient retention system for a door panel Jul. 20, 2010
7367159 Dual overhead track for a sliding door May. 6, 2008
7350332 Wall-mounted sliding door system and method Apr. 1, 2008
7331141 Automatic door control apparatus Feb. 19, 2008
7270218 Sealing device for elevator door Sep. 18, 2007
7232012 Elevator shaft door Jun. 19, 2007
7162835 Gravity safety door for an apparatus for manufacturing or inspecting semiconductors Jan. 16, 2007
7143870 Elevator hall door and door hanger apparatus Dec. 5, 2006
7117636 Simultaneously operating self balanced hung window Oct. 10, 2006
7114594 Door frame of a shaft door with a control arrangement for an elevator shaft and method for access to a control unit Oct. 3, 2006
7040056 Gear shaft assembly May. 9, 2006
7004516 Lock latch mechanism for transit vehicle door system Feb. 28, 2006
6990771 Inertial control system for opening and closing multiple sliding doors in a common direction Jan. 31, 2006
6968645 Sliding service window Nov. 29, 2005
6912812 Sliding door apparatus Jul. 5, 2005
6863001 Side sliding door apparatus for electric railcar Mar. 8, 2005
6854399 Side sliding door apparatus for electric railcar Feb. 15, 2005
6712406 Lock latch mechanism for transit vehicle door system Mar. 30, 2004
6662500 Train door apparatus Dec. 16, 2003
6209612 Locking device for a door system Apr. 3, 2001
6134838 Power door having a drive member disposed within a hanger portion and rollers of a door support engaging the hanger portion for motion therealong Oct. 24, 2000
6038819 Powered drive assembly Mar. 21, 2000
6021871 Apparatus for opening and closing a car door and a shaft door of an elevator installation Feb. 8, 2000
5974737 Self-opening entry device for a controlled access area Nov. 2, 1999
5894911 Car door locking system Apr. 20, 1999
5701973 Linear belt door operator Dec. 30, 1997
5701701 Safety gate Dec. 30, 1997
5690189 Apparatus and method for locking and unlocking the door of an elevator car Nov. 25, 1997
5678384 Rapid assembly secure prefabricated building Oct. 21, 1997
RE35622 Dual synchronous opening mirror doors for sun visors Oct. 7, 1997
5659160 Linear belt door operator Aug. 19, 1997
5441325 Vanity mirror with opposed sliding covers Aug. 15, 1995
5377785 Door closing system Jan. 3, 1995
5326211 Airlock system Jul. 5, 1994
5301994 Dual synchronous opening mirror doors for sun visors Apr. 12, 1994

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