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Class Information
Number: 5/248
Name: Beds > Bedsteads > Having bottom > Of springs > Spiral springs only
Description: Devices comprising arrangements of spiral springs forms only and the bounding and confining assemblages of such spring units into a spring bed bottom as a whole. Includes also special arrangements of the spring units, as of higher, deeper, or stronger springs in certain localities.

Sub-classes under this class:

Class Number Class Name Patents
5/249 Frames, sectional and collapsible 13
5/252 Intermediate frames and connections 6
5/253 With accessory spring shock absorbers 10

Patents under this class:
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Patent Number Title Of Patent Date Issued
8429779 Bedding or seating product made with coil springs having unknotted end turns with bumps Apr. 30, 2013
8429772 Coil spring having unknotted end turns with bumps Apr. 30, 2013
7930777 Bedding foundation having nestable stackable components Apr. 26, 2011
7921561 Bedding or seating product made with coil springs having unknotted end turns with bumps Apr. 12, 2011
7908693 Coil-in coil springs and innersprings Mar. 22, 2011
7805780 Bedding foundation having nestable stackable components Oct. 5, 2010
7404223 Innerspring coils and innersprings with non-helical segments Jul. 29, 2008
7386897 Bedding or seating product made with coil springs having unknotted end turns Jun. 17, 2008
7181796 Mattress structure with an improved lumbar zone Feb. 27, 2007
7063309 Mattress spring structure Jun. 20, 2006
7044454 Mattress inner spring assembly May. 16, 2006
6996866 Mattress structure with an improved lumbar zone Feb. 14, 2006
6966091 Coil innerspring assembly having varying degrees of firmness Nov. 22, 2005
6684435 Method of manufacturing bedding or seating product having coaxial coil springs Feb. 3, 2004
6375169 Mattress spring cushion assembly with combination of right-hand and left-hand spring units Apr. 23, 2002
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
6233760 Box spring with padded cover May. 22, 2001
5927695 Bed coil spring unit and method of making same Jul. 27, 1999
5575460 Spring core for a mattress Nov. 19, 1996
5509642 Mattress innerspring structure having coaxial coil units Apr. 23, 1996
4960267 Edge-reinforced spring bedding product Oct. 2, 1990
4905333 Spring bedding product Mar. 6, 1990
4886250 Spring structure for cushion seating Dec. 12, 1989
4828233 Bent wire spring module with lock May. 9, 1989
4781360 Spring assembly with helical coils of spring wire with unknotted ends Nov. 1, 1988
4771494 Offset continuous row coil spring assembly Sep. 20, 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
4639957 Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same Feb. 3, 1987
4625349 Bedding coil spring unit and assembly method Dec. 2, 1986
4609186 Mattress spring core with open ended coils Sep. 2, 1986
4597118 Combined bed frame and box spring assembly Jul. 1, 1986
4555097 Combination round coil spring and rectangular torsion coil spring assembly Nov. 26, 1985
4488712 Longitudinally laced continuous coil spring assembly Dec. 18, 1984
4437702 Adjustable patient corrective support apparatus Mar. 20, 1984
4324011 Furniture spring assembly Apr. 13, 1982
4161046 Coil spring assembly Jul. 17, 1979
4160544 Small diameter, single cone coil spring for use in a box spring assembly Jul. 10, 1979
4122566 Foundation unit having a posturized inner border Oct. 31, 1978
4121309 Furniture spring support Oct. 24, 1978
4112528 Box spring assembly and small diameter single cone coil spring for use in that assembly Sep. 12, 1978
4102032 Method of fabricating furniture spring support Jul. 25, 1978
4100631 Box-spring assembly Jul. 18, 1978
4052760 Coil spring assembly Oct. 11, 1977
4034429 Inner spring construction for mattresses, cushions and the like Jul. 12, 1977
4003563 Spring assembly and elements Jan. 18, 1977

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