Resources Contact Us Home
Browse by Category: Main > Household
Class Information
Number: 5/257
Name: Beds > Bedsteads > Having bottom > Of springs > Elements > Top-coil unions
Description: Devices, for means of connecting the end of the top coil of a spiral spring to the adjacent part of a lower turn of the same spring to form a closed top loop.

Patents under this class:

Patent Number Title Of Patent Date Issued
6578213 Stackable bedding foundation Jun. 17, 2003
5575460 Spring core for a mattress Nov. 19, 1996
4817924 Spring core for a mattress Apr. 4, 1989
4619445 Spring unit Oct. 28, 1986
4236262 Support grid and spring unit for a box spring foundation unit Dec. 2, 1980
4069525 Firm foundation unit for mattresses Jan. 24, 1978
4068330 Woven spring unit Jan. 17, 1978
4057860 Box spring assembly Nov. 15, 1977
4012801 Box spring assembly Mar. 22, 1977

  Recently Added Patents
Server system and method for discovering digital assets in enterprise information systems
Mobile computing terminal
Methods and systems for detecting icing conditions
Medical capsule housing formed by thermal welding
Contamination barrier
Wavelength and power scalable waveguiding-based infrared laser system
SRAM cells using shared gate electrode configuration
  Randomly Featured Patents
Off-image detection circuit for an image analyzer
Nutritional composition and a process for its production
Device for the integrated suspension and manipulation of the legs of a jack-up platform
Apparatus for use in lowering a well pipe into alignment with a subsea conduit
Beach towel tie down pins
Femtosecond ytterbium fiber laser with photonic crystal fiber for dispersion control
Method for refolding proteins containing free cysteine residues
Gate panel frame
Visceral fat measuring device
Method and apparatus for battery gauging in portable terminal