Cushion and acoustic system with the cushion
US7771375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2004 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Oct 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S5/952
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cushion comprises a resin body with a spring structure having permeability comprising a three-dimensional structure including voids at a predetermined bulk density, the three-dimensional structure being obtained by contacting, entwining, and gathering adjacent ones of random loops or curls of continuous filaments made from a thermoplastic resin in such a manner as to allow the resulting structure to have a layered structure in which layers composed of filaments having a high bulk density as superficial layers are formed on a front and a rear of the resin body in a lengthwise direction, and a layer composed of the filaments having a low bulk density as a core layer is interposed between the superficial layers; and a speaker incorporated in the resin body or disposed on one of the superficial layers of the resin body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.