Bladder and method of making the same
US5832630A · kind A · utility
112Cited by
29References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1993 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jul 23, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D22/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A bladder usable in the sole of a shoe for supporting the plantar area includes a plurality of chambers designed to provide a resilient resistance force. In the fabrication of the bladder, each of the chambers is formed in fluid communication with each other, and fluid is supplied into the chambers at a selected location. After the chambers have been pressurized to the desired internal pressure, the fluid communication port(s) is sealed. Although certain of the chambers are pressurized to the same internal pressure, different resistance forces are provided by forming the chambers with different volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.