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Class Information
Number: 5/256
Name: Beds > Bedsteads > Having bottom > Of springs > Elements > Springs, spiral
Description: Devices comprising spiral units having some peculiarities of structure of conformation, as twisting, doubling, angularity, varying thickness of wire, other than round, etc.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8689380 Multi-stranded coil spring Apr. 8, 2014
8429772 Coil spring having unknotted end turns with bumps Apr. 30, 2013
8429779 Bedding or seating product made with coil springs having unknotted end turns with bumps Apr. 30, 2013
8099811 Multi-stranded coil spring Jan. 24, 2012
7930777 Bedding foundation having nestable stackable components Apr. 26, 2011
7908693 Coil-in coil springs and innersprings Mar. 22, 2011
7814594 One-sided mattress Oct. 19, 2010
7805780 Bedding foundation having nestable stackable components Oct. 5, 2010
7418753 One-sided mattress Sep. 2, 2008
7404223 Innerspring coils and innersprings with non-helical segments Jul. 29, 2008
7178187 Asymmetric spring components and innersprings for one-sided mattresses Feb. 20, 2007
7168117 Multi-stranded coil spring Jan. 30, 2007
7047581 Stranded mattress spring May. 23, 2006
6966091 Coil innerspring assembly having varying degrees of firmness Nov. 22, 2005
6944899 Stranded mattress spring Sep. 20, 2005
6931685 One-sided mattress Aug. 23, 2005
6668406 Spring units Dec. 30, 2003
6324711 Low density spring assembly and method of making low density spring assemblies Dec. 4, 2001
6256820 Multilayered pocketed bedding or seating product Jul. 10, 2001
5713088 Innerspring construction with springs having free terminal convolutions Feb. 3, 1998
5699999 Aligned mattress spring core Dec. 23, 1997
5596777 Mattress with bent rattan springs Jan. 28, 1997
5584083 Mattress spring core Dec. 17, 1996
5509642 Mattress innerspring structure having coaxial coil units Apr. 23, 1996
5332202 Pneumatic member and related attachment elements for cushions, seats, foundations and the like Jul. 26, 1994
5104099 Spring bedding product Apr. 14, 1992
4817924 Spring core for a mattress Apr. 4, 1989
4781360 Spring assembly with helical coils of spring wire with unknotted ends Nov. 1, 1988
4766625 Box spring having rows of coil springs formed from a single length of wire Aug. 30, 1988
4766624 Mattress assembly having rows of coil springs formed from a single continuous length of wire Aug. 30, 1988
4726572 Spring coil and spring assembly Feb. 23, 1988
4724557 Bedding box spring assembly Feb. 16, 1988
4699362 Spring element Oct. 13, 1987
4664361 Spring unit May. 12, 1987
4625349 Bedding coil spring unit and assembly method Dec. 2, 1986
4619445 Spring unit Oct. 28, 1986
4609186 Mattress spring core with open ended coils Sep. 2, 1986
4555097 Combination round coil spring and rectangular torsion coil spring assembly Nov. 26, 1985
4548390 Spring unit Oct. 22, 1985
4535978 Coil spring and spring assembly Aug. 20, 1985
4480823 Innerspring assembly for furniture seats and backs Nov. 6, 1984
4244089 Method of constructing box springs or the like Jan. 13, 1981
4161046 Coil spring assembly Jul. 17, 1979
4160544 Small diameter, single cone coil spring for use in a box spring assembly Jul. 10, 1979
4120059 Furniture spring assembly and method for manufacture thereof Oct. 17, 1978
4112528 Box spring assembly and small diameter single cone coil spring for use in that assembly Sep. 12, 1978
4095297 Coil spring assembly Jun. 20, 1978
4052760 Coil spring assembly Oct. 11, 1977
4034429 Inner spring construction for mattresses, cushions and the like Jul. 12, 1977
4004304 Box spring assembly Jan. 25, 1977

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