Solenoid valve and massage apparatus employing such a solenoid valve
US5681026A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1996 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Feb 6, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H15/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Adjustable flow electromagnetic valve having a closing assembly (8) movable within a chamber (7) with a passage (3) linked to a high pressure area and a passage (4) linked to a low pressure area. The electromagnetic valve is designed such that the closing assembly consists of a valve (8) freely movable within the chamber (7). The disk-shaped valve (8) is flat, light and non-deformable and is capable of being automatically brought to its fluid flow position when pressure within the inlet passage (HP) (5) tends to a value approaching a predefined set pressure; the electromagnetic valve is also designed such that fluid flow through the valve (8) is achieved by openings (10) formed in the thickness of the valve, the openings being arranged in a median area outside the circumference of the inlet passage (3) so that the latter can be closed when the valve (8) is electromagnetically returned. It is further characterized by adjusting the electromagnetic return force exerted by the electromagnet for placing the valve (8) at a predetermined point between opening and closing to provide a predetermined constant flow, and for alternately shifting it, according to a predetermined frequency, to p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.