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Browse by Category: Main > Tools & Hardware
Class Information
Number: 16/76
Name: Miscellaneous hardware > Closers > Spring > Torsional > Coil
Description: Devices in which the torsional spring elements are wholly or in part in the form of coils.










Patents under this class:

Patent Number Title Of Patent Date Issued
8533909 Door opening and closing device Sep. 17, 2013
8429793 Door check Apr. 30, 2013
7779508 Refrigerator door closer and method Aug. 24, 2010
7516519 Door or gate closing hinge Apr. 14, 2009
7258153 Auto-reversible folding door Aug. 21, 2007
7111358 Tensioned pivot assembly Sep. 26, 2006
6976289 Door closer with door arresting mechanism Dec. 20, 2005
6802105 Spring balance assembly Oct. 12, 2004
6735820 Apparatus for closing sliding doors May. 18, 2004
6728992 Retractable door system May. 4, 2004
6725503 Door closer having dual operating directions Apr. 27, 2004
6477736 Gate closer apparatus Nov. 12, 2002
6240598 Arrangement for controlling an angularly movable member Jun. 5, 2001
5749122 Interior door closer and method May. 12, 1998
5406687 Door closure apparatus and method Apr. 18, 1995
5383253 Hydraulic buffer hinge Jan. 24, 1995
5191678 Wind resistant door hardware Mar. 9, 1993
4971378 Pivoted automobile partition with adjustable spring bias Nov. 20, 1990
4901396 Ice discharge apparatus of ice dispenser Feb. 20, 1990
4825503 Braking apparatus for door closer May. 2, 1989
4785493 Door check Nov. 22, 1988
4756051 Door-closer hinge with rotary-movement shock absorber Jul. 12, 1988
4731902 Door and gate spring Mar. 22, 1988
4709445 Method and apparatus for closing a door Dec. 1, 1987
4649597 Automatic gate closure apparatus Mar. 17, 1987
4583708 Hanger equipment for printed matter such as telephone directories Apr. 22, 1986
4514878 Reversible adjustable torsion door closer May. 7, 1985
4439946 Booster springs for coil spring trap Apr. 3, 1984
4419787 Door closer assist linkage Dec. 13, 1983
4413373 Pivot hinge with removable door closing device Nov. 8, 1983
4325164 Offset pivot hinges with door closing devices Apr. 20, 1982
4149295 Door return apparatus Apr. 17, 1979
3975794 Spring hinge Aug. 24, 1976











 
 
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