Powered pump assembly with selective relief valve
US6820648B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jul 2, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87861
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention provides a powered pumping system for filling various batch application tools with a viscous material. The system includes a motor mounted on a wheeled frame. The motor drives a slider-crank mechanism attached to a displacement pump. Affixed to the pump outlet is a relief valve having a plurality of predetermined relief pressure settings. The relief valve serves as a conduit between the pump and any one of various batch application tools while the tool is being filled with the viscous material. To initiate pumping, operators connect a filler valve of the tool to a relief valve outlet and actuate a switch. The relief valve of the present invention automatically selects a relief pressure appropriate for the particular tool based on certain physical characteristics of the particular tool. The selection of the appropriate relief pressure requires no operator intervention. Releasing the switch stops the pumping action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.