Wireless pressure control of a fluidic bladder with head pressure compensation
US10993727B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2016 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Jul 3, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pressure controller for a fluidic bladder has in sequence a pump, a first fluid line, a supply pressure sensor, a second fluid line, a bladder having an inlet coupled to the second fluid line, a bladder outlet coupled to a third fluid line of substantially equal length to the second fluid line, a return pressure sensor, and a fourth fluid line coupled to the return pressure sensor and returning fluid from the pump to the reservoir. A pressure estimate is formed by averaging the supply pressure and return pressure. The pressure controller receives a setpoint pressure as a command and data over a wireless channel, and computes a head pressure offset by turning the pump off and measuring the supply and return pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.