Inflation device capable of periodic inflation and deflation
US6412129B1 · kind B1 · utility
18Cited by
3References
5Claims
0Family size
Inventor
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jan 3, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K11/0853
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An inflation device comprises an electrically-driven air pump, a rotary valve, two sets of air sacs, and a pressure control unit. The air sacs are connected with the rotary valve which is in turn connected with the air pump. The air sacs are kept in the state of periodic and alternate inflation and deflation. The magnitude of pressure of the compressed air from the air pump is detected by the pressure control unit so as to interrupt or resume the power supply to the air pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.