RECIPROCATING POSITIVE DISPLACEMENT PUMP WITH ELECTRIC REVERSING MOTOR

Title:

RECIPROCATING POSITIVE DISPLACEMENT PUMP WITH ELECTRIC REVERSING MOTOR

Document Type and Number:

WIPO Patent Application WO/2013/036937

Kind Code:

A3

Abstract:

A pump system comprises an electric motor, a pump, a converter and a controller. The electric motor has a rotational output shaft that is rotatable in a first rotational direction and an opposite second rotational direction. The pump has a linearly displaceable input shaft that is movable in a first linear direction and an opposite second linear direction. The converter couples the output shaft to the input shaft such that rotation of the output shaft in the first rotational direction translates the input shaft in the first linear direction, and rotation of the output shaft in the second rotational direction translates the input shaft in the second linear direction. The controller repeatedly reverses rotation of the output shaft to produce reciprocating motion of the input shaft.

Inventors:

ROMAN TIMOTHY S (US)
MROZEK GREG T (US)

Application Number:

PCT/US2012/054471

Publication Date:

July 11, 2013

Filing Date:

September 10, 2012

Export Citation:

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Assignee:

GRACO MINNESOTA INC (US)
ROMAN TIMOTHY S (US)
MROZEK GREG T (US)

International Classes:

F04B17/03

Foreign References:

US4093404A	1978-06-06
US6577089B1	2003-06-10
US5284423A	1994-02-08
US1984296A	1934-12-11
US6957747B2	2005-10-25

Other References: