Penile erectile system
US4369771A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1981 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Sep 24, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/26
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A simple, reliable pressure control valve for a medical device having a hydraulic system comprises a valve housing having an open top and a bottom and an inwardly directed shoulder partially closing the top; a poppet with an upwardly extending stem mounted in the housing between the top and the bottom; a sealing edge mounted on the poppet circumferentially about the stem, and a calibrated spring urging the poppet towards the open top of the housing so that the sealing edge is in sealing contact with the underside of said shoulder and the stem extends above the top of said housing so that manual pressure can be exerted upon the stem to open the valve or the valve can be opened by a hydraulic pressure which exerts sufficient force upon the top of the poppet to overcome the force of the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.