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Class Information
Number: 267/180
Name: Spring devices > Coil > Irregular
Description: Spring device in which the spring element is of one-piece construction and (a) includes plural, intervoluted coils; or (b) is out-of-round in cross-section; or (c) in the unstressed condition thereof, includes portions which vary, one from another in (1) helix angle, or (2) distance from a common, central, longitudinal axis, or (3) cross-section.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8684342 Coil spring Apr. 1, 2014
8641023 Thermocompensated spring and method for manufacturing the same Feb. 4, 2014
8590867 Variable canted coil spring cross section Nov. 26, 2013
8413969 Nodal spring assembly for an electronic toothbrush Apr. 9, 2013
8393602 Coil spring with irregular cross section Mar. 12, 2013
8337368 Cushioning device and spring floor system incorporating same Dec. 25, 2012
8297600 Plastic spring for a motor vehicle chassis Oct. 30, 2012
8267384 Annular seal Sep. 18, 2012
8214184 Reverse engineering based coil spring design method Jul. 3, 2012
8210067 Shifting device for a manual transmission Jul. 3, 2012
8152147 Torsion spring assembly and portable electronic device with torsion spring assembly Apr. 10, 2012
8099811 Multi-stranded coil spring Jan. 24, 2012
8066036 Three-dimensional complex coil Nov. 29, 2011
8061696 Shock-absorbing spring for vehicles Nov. 22, 2011
7950596 Distributed stiffness biasing spring for actuator system and fuel injector using same May. 31, 2011
7841088 Method of producing a suspension coil spring Nov. 30, 2010
7814594 One-sided mattress Oct. 19, 2010
7793923 Wave coil spring Sep. 14, 2010
7731562 Toy helices having variable rates of movement Jun. 8, 2010
7691017 Hydraulic tensioner Apr. 6, 2010
7441980 Device for joining two components with tolerance compensation Oct. 28, 2008
7418753 One-sided mattress Sep. 2, 2008
7418973 Device to reduce noise in pressure regulators Sep. 2, 2008
7404223 Innerspring coils and innersprings with non-helical segments Jul. 29, 2008
7367354 Check valve May. 6, 2008
7337796 Safety relief valve having a low blow-down value and spring therefore Mar. 4, 2008
7309357 Prosthetic spinal discs Dec. 18, 2007
7247007 Linear compressor Jul. 24, 2007
7231702 Connector and method of use thereof Jun. 19, 2007
D538434 Orthodontic spring Mar. 13, 2007
D537945 Orthodontic spring Mar. 6, 2007
7178187 Asymmetric spring components and innersprings for one-sided mattresses Feb. 20, 2007
7168117 Multi-stranded coil spring Jan. 30, 2007
7152854 Spring mechanism and cell contact mechanism for small electronic device Dec. 26, 2006
7047581 Stranded mattress spring May. 23, 2006
6944899 Stranded mattress spring Sep. 20, 2005
6931685 One-sided mattress Aug. 23, 2005
6883790 Coil spring with lateral bias Apr. 26, 2005
6712346 Helical compression spring for a vehicle suspension Mar. 30, 2004
6669184 Composite wave ring spring Dec. 30, 2003
6604736 Spring assembly with captured core Aug. 12, 2003
6547227 Torsional vibration damper and helical compression spring for a torsional vibration damper Apr. 15, 2003
6543757 Helical compression spring for a vehicle suspension Apr. 8, 2003
6533259 Resilient return means having a fixing seat and elongate body fitted with such resilient return means Mar. 18, 2003
6481701 Spring having coils of varying diameters Nov. 19, 2002
6460835 Wheel suspension system and spring therefor Oct. 8, 2002
6460840 Helical compression spring for a vehicle suspension Oct. 8, 2002
6375174 Curved helical compression spring Apr. 23, 2002
6328290 Helical compression spring for a vehicle suspension Dec. 11, 2001
6299150 Composite spring mount shock absorber Oct. 9, 2001

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