Pump apparatus
US5129794A · kind A · utility
118Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Aug 26, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/043
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump apparatus comprising an enclosure for holding a volume of fluid; an intake one-way valve for enabling intake of fluid into the enclosure; a discharge one-way valve for enabling discharge of fluid from the enclosure; a diaphragm for cyclically deflectably increasing and decreasing the volume of the enclosure whereby fluid is oscillatingly drawn into the enclosure and discharged therefrom; a heating assembly for selectively oscillatingly applying heat to the diaphragm and terminating application of heat thereto for selectively oscillatingly deflecting the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.