Pumps – Expansible chamber type – Moving cylinder
Patent
1990-07-09
1991-09-10
Smith, Leonard E.
Pumps
Expansible chamber type
Moving cylinder
92245, 417462, 91492, F04B 1902
Patent
active
050469312
ABSTRACT:
The radial gear driven piston pump (10) comprises a stationary pintle or pin (40) having a rotatable rotor (30) mounted thereon. The rotor (30) and pintle (40) are disposed within a pumping bore (18) that is eccentrically aligned relative to bore extensions (28) receiving the pintle (40). The rotor (30) is driven by an offset motor (12) which engages a periphery of the rotor (30). The pintle (40) has therein two pairs of longitudinal passages comprising supply (46, 53) and discharge (47, 54) channels which communicate with respective intake (41, 43) and exhaust (42, 44) ports within the pump housing (16). The rotor (30) has sets of axially offset pistons (90, 100) received within piston cavities (93, 93'). Each set of piston (90, 100) comprises a metal piston cap (95) having a central opening (90) which receives a longitudinal extension (97) of a piston sealing ring (98). Each piston sealing ring (98) has an opening (111) extending into the longitudinal extension (97) in order to house a spring which engages a recess (34) of the piston cavity (93) to bias the piston outwardly into engagement with a bearing mechanism (70) disposed within the pumping bore (18). Each piston cavity (93, 93') has an end opening (94, 94') communicating intermittently with the associated supply (46, 53) and discharge (47, 54) channels as the rotor (30) rotates about the pintle (40). The pump (10) provides a dual channel pumping function with as many pistons as desired for each channel.
REFERENCES:
patent: 2651999 (1953-09-01), Harrington
patent: 2731114 (1956-01-01), Lambert et al.
patent: 3661057 (1972-05-01), Rogov
patent: 3695147 (1972-10-01), Seisennop et al.
patent: 4310291 (1982-01-01), Green et al.
patent: 4401082 (1983-08-01), Leblanc
patent: 4445825 (1984-05-01), Budecker
patent: 4486154 (1984-12-01), Duplat et al.
patent: 4505652 (1985-03-01), Burgdorf et al.
patent: 4555223 (1985-11-01), Budecker et al.
patent: 4660522 (1987-04-01), Babitzka
patent: 4662337 (1987-05-01), Eheim
patent: 4709673 (1987-12-01), Babitzka
patent: 4758134 (1988-07-01), Budecker et al.
patent: 4780068 (1988-10-01), Brown, Jr.
patent: 4846631 (1989-07-01), Parrott
patent: 4850825 (1989-07-01), Budecker
patent: 4920859 (1990-05-01), Smart et al.
patent: 4982566 (1991-01-01), von Kaler et al.
Allied-Signal Inc.
Decker Ken C.
Kocharov Michael I.
Palguta Larry J.
Smith Leonard E.
LandOfFree
Radial gear driven piston pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radial gear driven piston pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial gear driven piston pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-536718