Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone
Reexamination Certificate
2007-03-20
2007-03-20
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
Interengaging rotating members
Helical or herringbone
C418S201100, C418S200000
Reexamination Certificate
active
10752064
ABSTRACT:
A twin-shaft vacuum pump includes two shafts and two rotors supported on respective shafts and cooperating with each other for producing a pumping effect, with each rotor being formed of a plurality of discoid components.
REFERENCES:
patent: 185850 (1877-01-01), Cleveland
patent: 3272140 (1966-09-01), Curry et al.
patent: 4761125 (1988-08-01), Inagaki et al.
patent: 5092751 (1992-03-01), Viktora
patent: 5755566 (1998-05-01), Marsillo et al.
patent: 0693372 (1940-06-01), None
patent: 1021721 (1953-08-01), None
patent: 0914886 (1954-06-01), None
patent: 2302902 (1974-01-01), None
patent: 0546281 (1993-06-01), None
patent: 0995879 (2000-04-01), None
patent: 1026399 (2000-08-01), None
patent: 0564309 (1944-09-01), None
patent: 0795774 (1954-03-01), None
patent: 1181460 (1970-02-01), None
patent: 2030227 (1980-04-01), None
Patent Abstract of Japan, JP-06101671, Apr. 1994.
Patent Abstracts of Japan JP 04 058093, Feb. 1992.
Patent Abstracts of Japan JP 58 041634, Mar. 1983.
Rippl Christopher-Mark
Wagner Juergen
Abelman ,Frayne & Schwab
Pfeiffer Vacuum GmbH
Trieu Theresa
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