Rotary expansible chamber devices – Interengaging rotating members – Non-parallel axis
Reexamination Certificate
2005-05-03
2005-05-03
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
Interengaging rotating members
Non-parallel axis
C418S019000, C418S020000, C418S001000
Reexamination Certificate
active
06887057
ABSTRACT:
A positive displacement device that incorporates two rotors that are offset from collinear and each comprising a first and second set of vanes where the engagement surfaces of the first set of vanes are adapted to only engage when the rotors are in the top dead center location and the second set of lobes of each rotor only engage one another at the bottom dead center position of rotataion.
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Excerpt from a book titled “Rotary Piston Machines” by Felix Wankel, Classification of design principles for engines, pumps and compressors, 16 pages, 1965.
Granco Positive Displacement Rotary Pump product brochure, 6 pages, with attached article, Principles of operation and performance characteristics of Rotary Ball Pumps by Michael L. George, Challenge Manufacturing Co. Inc. Oakland, CA 4 pages, Plant Engineering Dec. 10, 1981.
Hughes Michael F.
Hughes Law Firm PLLC
Outland Technologies (USA) Inc.
Trieu Theresa
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