Liquid pump assembly
US5118265A · kind A · utility
Inventor
Key dates
| Filing date | Nov 2, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Nov 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7931
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pumping apparatus comprises a piston/cylinder assembly mounted between two laterally spaced end cap sections attached to base means and including spring-loaded valve devices. A piston rod is movably supported in and extends outwardly from one of the end cap sections. A manually operated linkage mechanism effects axial longitudinal movement of the piston rod and a support mechanism maintains longitudinal axial alignment of the piston rod during its longitudinal axial movement. The longitudinal movement of the piston rod operates in concert with the spring-loaded valve devices to pump fluid manually when the pumping apparatus is positioned in any angular disposition with respect to the horizontal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.