Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1997-01-29
1998-12-15
Thorpe, Timothy
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
92165R, 92168, 417569, F04B 3910
Patent
active
058488804
ABSTRACT:
A high-pressure plunger pump assembly, in particular for working pressures above 2000 bar, includes a housing, a cylinder received in the housing and defining a working space which has an expanded area along a section thereof for receiving a sleeve therein, and a plunger slidably moveable in the working space of the cylinder and in the sleeve and being suitably operated by a drive for reciprocating movement. The sleeve has one end closer to the plunger drive and formed with an annular flange. A suction valve communicates with the cylinder for admitting fluid from a suction chamber into the working space, and a pressure valve communicates with the cylinder for expelling fluid from the working space during a pressure stroke of the plunger, with a seal being positioned in a transitional area from the annular flange to the cylinder between the working space and the suction chamber.
REFERENCES:
patent: 2656820 (1953-10-01), Becker
patent: 3811801 (1974-05-01), Buse et al.
patent: 3891356 (1975-06-01), Christ
patent: 5050895 (1991-09-01), Hashish et al.
patent: 5064354 (1991-11-01), Robertson et al.
patent: 5273405 (1993-12-01), Chalmers et al.
patent: 5362216 (1994-11-01), Hammelmann
patent: 5493954 (1996-02-01), Kostohris et al.
Feiereisen Henry M.
Paul Hammelmann Maschinenfabrik GmbH
Thorpe Timothy
Tyler Cheryl J.
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