Positive-displacement rotary pump

Rotary expansible chamber devices – With mechanical sealing – Axially movable end wall or end wall portion

Reexamination Certificate

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Details

C418S201100, C418S203000

Reexamination Certificate

active

06887055

ABSTRACT:
A positive-displacement rotary pump comprising a pair of meshing gears (13, 14) or rotors, consisting of a driving gear and a driven gear, contained in a shell (10) having an output opening and an intake opening for a fluid. The gears (13, 14) include shafts (23, 24) which are supported by bushings (15a,15b) having two faces (17a,17b) which are subjected, in use, to pressures which bring about an axial load on the bushing itself, wherein the resultant of the axial loads (S′, S″) on the two bushings has a predetermined direction so as to move the bushings (15a,15b) and the gears (13, 14) as a whole into close abutment with a predetermined reference plane (VI—VI).

REFERENCES:
patent: 2808785 (1957-10-01), Hilton
patent: 2816510 (1957-12-01), Jarvis
patent: 3057302 (1962-10-01), Lockett
patent: 3104616 (1963-09-01), Peet
patent: 3142260 (1964-07-01), Oliver
patent: 3209611 (1965-10-01), Iyoi
patent: 3937604 (1976-02-01), Taylor
patent: 3945779 (1976-03-01), Vlemmings et al.
patent: 4794540 (1988-12-01), Gutman et al.
patent: 5028855 (1991-07-01), Distler et al.
patent: 5417556 (1995-05-01), Waddleton
patent: 3605246 (1987-08-01), None
patent: 93 15 768.1 (1994-04-01), None
patent: 1 132 618 (2001-09-01), None
patent: 30-7809 (1955-10-01), None
patent: WO 9601950 (1996-01-01), None
patent: WO 0144693 (2001-06-01), None
“Sulla Portata delle pompe ad ingranaggi” (About Rate Flow of Gear Pumps) , Dr. Ing. Claudio Bonacini,L'Ingegnere, 1961, No. 9, pp. 1-8, and English translation of summary therof.

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