Rolling wheel actuated pump and pump system
US5503536A · kind A · utility
2Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Jun 10, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61K3/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pump having a reciprocating piston/plunger unit adapted to be actuated by a railway wheel rolling over it has a unitary plunger and piston, with the piston double-acting so that when the outlet pressure exceeds a certain value, the plunger remains retracted. An accumulator is provided in fluid communication with the outlet so as to store accumulated hydraulic pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.