Rotary piston fluid handler
US5613838A · kind A · utility
Inventor
Key dates
| Filing date | Oct 18, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Oct 18, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump apparatus includes an outer cylindrical housing having end plates, and a power conversion assembly supported for rotation within the outer housing. A torque input shaft provided on one of the end plates has a "primary" gear on its free end. The inner housing includes a crank case within which cylinders are arranged at spaced radial locations. Double-acting pistons are housed within the cylinders. Crank members supported by the crank case for rotation are coupled to the pistons via force transmitting elements to drive the pistons with reciprocating motion in the cylinders. Each of the crank members includes a "secondary" gear engaged with the primary gear. Each crank member includes a linkage coupled with a piston rod so that the pistons are driven in reciprocating motion in the cylinders. Both ends of the pistons communicate with fluid reservoirs, and the motion of the pistons causes the fluid to be moved into or out of the cylinders in response to the direction of motion of the pistons in the cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.