The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1993
Filed:
Sep. 28, 1992
Gordon W Culp, Van Nuys, CA (US);
Rockwell International Corporation, Seal Beach, CA (US);
Abstract
A multiplicity of heaters 50 on the surface 10 of a hollow torus chamber 4 are employed to exobarically stimulate the fluid contained in the chamber to make a resonant traveling wave 20 which has its high pressure peaks 22 adjacent outlet ports 16 and its negative pressure peaks 26 adjacent inlet ports 12, thus pumping the fluid. The traveling wave can be composed of two waves having a phase difference. A controller 62 directs the heaters to exobarically stimulate the fluid so as to create the traveling wave in the fluid. Heaters 50 can act as anemometers to detect the position of the waves in the chamber so that the controller may determine when to add pulses to the wave. By having a traveling wave which always has a high pressure peaks 22 adjacent to outlet ports 16 and its negative pressure peaks 26 adjacent inlet ports 16, no valves are required to make the pump function, thus eliminating any moving parts in the pump. Further, the pump can be made with materials which operate at high temperatures with dependence on curie temperatures, such as pumps having permanent magnets, magnetically permeable cores, piezoelectric materials and ferroelectric substances would encounter.