Patent · US Expired

Rotary vane pump

US4637782A · kind A · utility

8Cited by

3References

7Claims

0Family size

Assignee

Vickers Systems · GB

Inventors

Heinz Teubler · Friedrichsdorf, DE
Rene Schulz · Rabenau, DE

Key dates

Filing date	Feb 18, 1986
Grant date	Jan 20, 1987
Priority date	—
Expiry date	Feb 18, 2006

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C14/26
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A hydraulic rotary vane pump comprises a flow control valve with a venturi throat disposed upstream thereof whereby the entire delivery flow from the pump passes through the venturi throat. The flow control valve is operable to control the amount of fluid flowing to the delivery outlet of the unit, under the influence of the pressure drop at a restrictor throttle in the form of a bore extending from the throat transversely with respect to the axis thereof. The angle between the axis of the venturi throat and the axis of the bore is between 90.degree. and 150.degree. depending on the degree to which the characteristic of the outlet flow produced is intended to drop off.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.