Air supply and exhaust device for air cells
US11028859B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Feb 12, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/5657
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
There is provided an air supply and exhaust device for air cells which is configured to supply air to a plurality of air cells and exhaust air from the plurality of air cells via a distributor. The distributor includes a housing having a plurality of vent holes and a valve body including an air supply chamber and an exhaust passage. The exhaust passage has a cross-sectional area substantially the same as a cross-sectional area of a vent hole capable of communicating with the exhaust passage, and allows an exhaust receiving port configured to face the vent hole capable of communicating with the exhaust passage and an atmosphere opening port to communicate with each other by being curved around a rotation center of the valve body and extending in a circular arc shape along a rotation track of the valve body at least at the exhaust receiving port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.