Pump drive decoupler
US6149403A · kind A · utility
1Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Mar 2, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/03
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump drive assembly is disclosed. The assembly includes a driver, a pump drive member driven by the driver, and a decoupler that decouples the drive member from the driver when a force acting upon the drive member exceeds a threshold force. The pump drive member can be a piston rod, and the decoupler can be a magnet attached to the piston rod and coupled to a magnetically attracted plate driven by the driver. When a force resisting movement of the piston rod exceeds the magnetic force coupling the magnet to the plate, the magnet decouples from the plate, and the pumping operation ceases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.