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Class Information
Number: 49/7
Name: Movable or removable closures > Thermal releaser or actuator > Fusible closure latch or retainer
Description: Device wherein the retaining means holds the closure in a desired position, and wherein the device melts to release the closure.










Sub-classes under this class:

Class Number Class Name Patents
49/8 Fusible connector disengages pawl or catch 21


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8176709 Composite profile for window, door or facade element May. 15, 2012
8168319 Portable computer battery structures May. 1, 2012
7591102 Emergency door opening actuator Sep. 22, 2009
7574826 Emergency door opening actuator Aug. 18, 2009
7530891 Thermally-actuated cartridge and fire damper May. 12, 2009
7154394 Hidden security device and container using the same Dec. 26, 2006
7138912 Movable barrier operations method and apparatus Nov. 21, 2006
6968658 Removable mullion assembly Nov. 29, 2005
6748700 Smoke release and ventilation system Jun. 15, 2004
6725602 Automatically extendable astragal system Apr. 27, 2004
6615544 Fire-resistant door Sep. 9, 2003
6484784 Door controlling device Nov. 26, 2002
6161348 Drop-out fire vent Dec. 19, 2000
6131338 Removable mullion assembly Oct. 17, 2000
6092334 Door locking device for a door closer having a fire actuated mechanism for unlocking the door locking device Jul. 25, 2000
5927012 Emergency release latch mechanism for smoke hatch Jul. 27, 1999
5893234 Time delay release mechanism for a fire barrier Apr. 13, 1999
5890319 Removable mullion assembly Apr. 6, 1999
5813739 Flammable material storage cabinet Sep. 29, 1998
5794382 Fire rated removable mullion Aug. 18, 1998
5791086 Heat effect window Aug. 11, 1998
5638639 Emergency door with retractable nose piece, interiorly mounted operating hardware, and hinge supports Jun. 17, 1997
5582472 Solvent storage cabinet Dec. 10, 1996
5440843 Firecode access panel Aug. 15, 1995
5373932 Fire barrier Dec. 20, 1994
5247998 Chimney fire extinguishing apparatus Sep. 28, 1993
5213542 Insulated heat activated ventilator May. 25, 1993
5165505 Elevator landing door apparatus Nov. 24, 1992
5020423 Rotating blade damper with blade lock and stop mechanism Jun. 4, 1991
4865367 Safety door with counterweight locking Sep. 12, 1989
4858517 Fire damper kit Aug. 22, 1989
4835904 Device for automatically closing windows Jun. 6, 1989
4635729 Extensible flame deflector Jan. 13, 1987
4627498 Fuse design for fire limiters or other safety appliances in ventilation installations Dec. 9, 1986
4619076 Safety cabinet latching system Oct. 28, 1986
4578900 Ventilation apparatus Apr. 1, 1986
4555981 Damper operator for use with air, smoke and fire dampers Dec. 3, 1985
4531534 Spring-powered actuator Jul. 30, 1985
4474167 Latch for a butterfly damper Oct. 2, 1984
4472999 Damper operator for use with air, smoke and fire dampers Sep. 25, 1984
4467562 Fire door assembly Aug. 28, 1984
4398371 Magnetic smoke and fire shield Aug. 16, 1983
4333489 Spring-motor dual-functioning mechanism Jun. 8, 1982
4311329 Panic-type device having fusible section in push rod to avoid unintentional opening of door in event of fire Jan. 19, 1982
4304248 Damper blade operating mechanism Dec. 8, 1981
4273283 Automatic air register Jun. 16, 1981
4265051 Door having improved closing and latching systems May. 5, 1981
4262448 Safety storage cabinet Apr. 21, 1981
RE30263 Catch mechanism Apr. 29, 1980
4191412 Door closure apparatus Mar. 4, 1980

1 2










 
 
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