Sealed piston pump
US5468128A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1993 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Nov 23, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2253/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sealed piston pump having in an open cavity of the pump body, a circular single-piece set formed by a central cylindrical piston. The piston is coupled by a rod to a driving member while the piston in an alternating motion along its longitudinal axis. A ring is placed on the pump body which is hollowed out with an annular channel and a deformable thinned part connecting the piston to the ring. The single-piece set and the pump body are fixedly joined to each other in an imperviously sealed way. The single-block set is made of a synthetic material that is flexible and mechanically and chemically resistant. The pump can be advantageously used in ink-jet printers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.