Suction device
US5003966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Oct 13, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2205/022
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a facial suction device for massaging facial skin and the like by suction, and its object is to controll suction force appropriately and operation noise small. The suction device according to the invention includes a suction pump comprising a diaphragm 9 of which the center part is formed in a dome section 11, a suction valve 13a and an exhaust valve 13b both made of thin plate and disposed on the end of the diaphragm. And the dome section 11 of said diaphragm 9 is expanded and contracted by the rotation of an eccentric shaft of a motor 4, thereby the suction valve 13a and the exhaust valve 13b are operated to conduct sucking against the face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.