Metering gear pump with integral flow indicator
US8496457B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2011 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Apr 23, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2270/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gear pump includes a driven gear and an idler gear each mounted for rotation in a housing. The driven gear and the idler gear include respective gear teeth in a meshing relationship and forming an inlet space and an outlet space in the housing and adjacent to the meshing gear teeth. The inlet space is in fluid communication with the inlet port and the outlet space is in fluid communication with the outlet port. A flow indicating element is located in the housing and is mounted for rotation independent of the driven gear and the idler gear. The flow indicating element is configured to be rotated by the viscous fluid to indicate when the fluid is moving from the inlet port and inlet space to the outlet space and outlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.