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Machine translation
1. (WO1980000599) AXIAL RECIPROCATING PISTON PUMP WITH CONTROL AND INVERSION OF FLOW
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000599    International Application No.:    PCT/BR1979/000009
Publication Date: 03.04.1980 International Filing Date: 31.08.1979
IPC:
F04B 3/00 (2006.01), F04C 9/00 (2006.01)
Applicants:
Inventors:
Priority Data:
7805823 06.09.1978 BR
Title (EN) AXIAL RECIPROCATING PISTON PUMP WITH CONTROL AND INVERSION OF FLOW
(FR) POMPE A PISTON A MOUVEMENT AXIAL ALTERNATIF AVEC CONTROLE ET INVERSION DE L"ECOULEMENT
Abstract: front page image
(EN)A variable-delivery piston pump capable of being used in hydraulic systems where variable delivery is required. It comprises a cylinder having internally inlet/outlet ports (12) (13) (14) (15); two rotary cylinders (2) (3), fixed on a driving shaft (9), which are truncated at one end and have passages (4) (5) for the fluid; a reciprocating piston (1) which is truncated at both ends and is free to reciprocate but prevented to rotate by a guide pin (6). As the rotary cylinders (2) (3) rotate the reciprocating piston (1) is forced to reciprocate pumping fluid through the passages (4) (5) and inlet/outlet ports (12) (13) (14) (15). Variable delivery is obtained when guide pin (6) is moved which causes a dephasing in the pumping cycle. The pump gives a stepless infinitely-variable delivery, the direction of flow being reversible.
(FR)Pompe a piston a debit variable apte a etre utilisee dans des systemes hydrauliques dans lesquels des debits variables sont exiges. L"invention comprend un cylindre comportant des orifices d"admission et d"emission internes (12, 13, 14, 15); deux cylindres rotatifs (2, 3), fixes sur un arbre moteur (9), qui sont tronques a une extremite et qui possedent des passages (4, 5) pour le fluide; un piston alternatif (1) qui est tronque aux deux extremites et libre pour une action alternative mais est empeche de tourner par une broche pilote (6). Lorsque les cylindres rotatifs (2, 3) tournent, le piston alternatif (11) est actionne pour pomper alternativement du fluide au travers des passages (4, 5) et des orifices d"admission et d"emission (12, 3, 14, 15). Un ecoulement variable est obtenu lorsque la broche pilote (6) est deplacee ce qui entraine un dephasage du cycle de pompage. La pompe fournit un ecoulement infiniment variable sans paliers, la direction de l"ecoulement etant variable.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)