Linear actuator mechanism for converting rotary to linear movement including one end pulley Line attached to the stationary anchor and other end attached to the take-up drum
US5752811A · kind A · utility
Inventor
Key dates
| Filing date | Nov 15, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Nov 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18848
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A linear actuator and pump unit for precision displacement of fluids in which a positive displacement, piston pump is coupled to an actuator mechanism having a carriage on a guide that is displaced by a rotary drive connected to a take-up drum on an anchor structure that has a pulley line anchored to the anchor structure looped around a first idler pulley on the carriage, looped around an idler pulley on the anchor structure, looped around a second anchor structure on the carriage, and connected to the take-up drum, the positioning of the carriage being detected by a sensor and the rotary drive that controls the precision operation of the piston pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.