Plunger pump
US6053091A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1998 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/166
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A plunger pump comprising a plunger pump section (34) including a pumping chamber (60), a plunger (36) extending through the pumping chamber, a high pressure side-seal (58) and a low pressure side-seal (56) provided in slide contact with the plunger for preventing leakage of fluid from the pumping chamber, an annular and sealing through which a plunger (36) slidably extends into the pumping chamber (60), and an annular space (62) being defined between the high pressure side-seal (58) and the low pressure side-seal (56) so that it can receive liquid from a suction port (74) for lubrication of the plunger. Even when the plunger pump section (34) is installed at a predetermined or any circumferencial position, air is intended to be vented from the annular space (62). For this purpose, three circumferencially spaced channels (78) are formed in an inner wall of a manifold member (18) surrounding a sleeve (52) defining the pumping chamber (60) and communicate at their ends with the suction port (74) and (62).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.