Measuring and testing – Volume or rate of flow – Expansible chamber
Reexamination Certificate
2005-08-02
2005-08-02
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Volume or rate of flow
Expansible chamber
Reexamination Certificate
active
06923055
ABSTRACT:
A flow meter comprising a rotor assembly that is comprised of two rotors having axis of rotation offset from collinear where the two rotors define operating chambers that changing volume with respects to rotation and allow fluid to pass from an inlet port to an outlet port when the number of rotation is indicated the volumetric flow therethrough.
REFERENCES:
patent: 32372 (1861-05-01), Jones
patent: 351129 (1886-10-01), Salomo
patent: 914155 (1909-03-01), Mills et al.
patent: 991576 (1911-05-01), White
patent: 1379653 (1921-05-01), Shoemaker
patent: 2101051 (1937-12-01), Cuny
patent: 2101428 (1937-12-01), Cuny
patent: 2242058 (1941-05-01), Cuny
patent: 2431817 (1947-12-01), Mann
patent: 3101700 (1963-08-01), Bowdish
patent: 3106912 (1963-10-01), Kahlert
patent: 3156222 (1964-11-01), Miller, Jr.
patent: 3236186 (1966-02-01), Wildhaber
patent: 3272130 (1966-09-01), Mosbacher
patent: 3816038 (1974-06-01), Berry
patent: 3816039 (1974-06-01), Berry
patent: 3856440 (1974-12-01), Wildhaber
patent: 5755196 (1998-05-01), Klassen
patent: 6036463 (2000-03-01), Klassen
patent: 6705161 (2004-03-01), Klassen
patent: 2069607 (1993-11-01), None
patent: 1551081 (1970-04-01), None
patent: 2639760 (1978-03-01), None
patent: 3221994 (1983-12-01), None
patent: 916277 (1946-08-01), None
patent: 5686 (1902-11-01), None
patent: 805370 (1958-12-01), None
patent: 1099085 (1968-01-01), None
patent: 268459 (1933-01-01), None
patent: 43-29764 (1943-12-01), None
patent: 55-72683 (1980-05-01), None
patent: WO 99/61753 (1999-12-01), None
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
Lefkowitz Edward
Outland Technologies (USA) Inc.
Thompson Jewel V.
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