Piston pump
US7891959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2006 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Sep 18, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/126
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston pump includes a pump housing having a suction port and a discharge port. A piston is mounted in a bore of the pump housing and forms a pump chamber. Suction and discharge valves are provided on the opposite sides of the pump chamber, respectively. The suction valve includes a retainer which is mounted on the piston and has a valve bore which communicates with the suction port, a valve seat which is formed at the pump chamber end of the valve bore, and a valve body holding portion and a spring holding portion. The suction valve also includes a valve body which can seat and unseat from the valve seat and which is received and held by the valve body holding portion, and a spring which is received and held by the spring holding portion and biases the valve body towards the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.