| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 005655700 | Spring containing (e.g., coil type) | 10 |
| 20090049615 | - A foam spring for use in pillows, cushions, mattresses or the like, the foam spring having a tubular resilient body made of foam with holes extending inwardly from an outside surface to an inside location, wherein the holes extend at a non-perpendicular angle relative to a line perpendicular to the outside surface of the spring at the position of the hole. The foam spring is manufactured by a method which comprises providing interrupted slits along lines extending in the longitudinal direction of a foam layer; cutting a transverse strip out of this foam layer; bending two opposite ends of the strip towards each other; and fixing the two opposite ends into a tubular shape to form the tubular resilient body, wherein the slits are made in a direction forming an angle with the direction perpendicular to the surface of the foamed layer. | 02-26-2009 |
| 20100299839 | Bedding or Seating Product Made With Coil Springs Having Unknotted End Turns With Bumps - Disclosed herein is a bedding or seating product ( | 12-02-2010 |
| 20160120330 | CUSHIONS INCLUDING FLAT SPRINGS - Cushions such as seat cushions, mattresses, and the like include a chassis core. The chassis core includes a rigid or semi-rigid base sheet; and a plurality of paired flat springs coupled to the rigid or semi-rigid base sheet, wherein each paired flat spring comprises a lower flat spring including a first terminal end, a second terminal end, and a flexible arcuate member extending from the first terminal end to the second terminal end, and an upper flat spring including a first terminal end, a second terminal end, and a flexible arcuate member extending from the first terminal end to the second terminal end, wherein the first and second terminal ends of the upper flat spring are fixedly attached to respective first and second terminal ends of the lower flat spring such that the upper flat spring is inverted relative to the lower flat spring. Also disclosed are processes for manufacturing the core chassis. | 05-05-2016 |
| 20160150892 | SPRING CORE | 06-02-2016 |
| 20190142178 | CUSHIONS INCLUDING FLAT SPRINGS | 05-16-2019 |
| 005655800 | Compartmentalized springs | 5 |
| 20110041252 | Systems and methods for manufacturing springs with foam characteristics - Systems and methods include a spring-coil assembly having non-linear load-deflection characteristics that are substantially similar to foam. In particular, the systems and methods described herein include a first set of encased springs that are in a partially compressed state and a second set of shorter springs. These two sets of springs may be arranged in alternating rows such that the resulting spring-coil assembly displays non-linear load-deflection characteristics similar to foam. | 02-24-2011 |
| 20110197367 | Slow Acting Pocketed Spring Core Having Fill Material Inside Pockets - Spring cushions ( | 08-18-2011 |
| 20150359349 | Pocketed Spring Assembly - A pocketed spring assembly comprises a plurality of parallel strings of springs, each string joined to an adjacent string, each string comprising first and second opposed plies of fabric and a plurality of pockets formed along a length of the string by transverse seams joining the first and second plies. At least one spring is positioned in each pocket. An upper end of each transverse seam is below the upper surface of the string so as to partially separate adjacent pockets within a string of springs. Each spring has two end portions and a middle portion. The convolutions of the middle portion are greater in diameter and pitch than the convolutions of the end portions. | 12-17-2015 |
| 20160007760 | NO-GLUE POCKETED SPRING UNIT CONSTRUCTION | 01-14-2016 |
| 20160249744 | Pocketed Spring Assembly | 09-01-2016 |
