Fluid motivated pump
US6478552B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | May 9, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/113
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for pumping a stock fluid by supplying and discharging a motivating fluid to a unit is described. The device develops the suction and discharge of the stock fluid through the motion of a movable biasing boundary within a cavity. The movable biasing boundary divides the cavity into a stock fluid cell and a motivating-fluid cell. In the case that the movable biasing boundary comprises a piston, a link joined to the piston may extend outside of the unit as a means for driving the piston toward the motivating fluid cell. Each cell communicates with a fluid circuit that includes a source line, a valve or valves and a discharge line. The controlled supply and discharge of the motivating fluid to move the movable biasing boundary creates the discharge and suction of the stock fluid respectively. A valve directs the supply and discharge of the motivating fluid. Valves in the stock fluid circuit assist with the discharge and suction of the stock fluid from and into the stock-fluid cell to create the pumping action. The use of the devise in commercial food preparation and waste-water management applications to pump grease/water mixtures, grease and gray water is presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.