Flow regulating valve

Details Flow regulating valve Flow regulating valve

1993-03-12

1995-04-11

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Fluid flow rate responsive

251324, F04B 4900

Patent

active

054052483

ABSTRACT:
A flow regulating valve for rotation piston pumps to regulate a useful flow, especially for auxiliary power steering in motor vehicles, contains in a valve core (2) an axially-movable, spring-loaded flow regulating piston (3). On one front surface (4) of the flow regulating piston (3), there is a control edge (14) by means of which a flowoff cross section in a flowoff duct (15) can be altered. To reduce the flow noises, control edge (14) has a rounded portion (17) at the transition to the generated surface (16) of the flow regulating piston (3). In addition, control edge (14) reveals a negative bezel (18). A positive bezel (21) is arranged between this negative bezel (18) and the rounded portion (17) that adjoins generated surface (16).

REFERENCES:
patent: 4715793 (1987-12-01), Johann et al.
patent: 4862920 (1989-09-01), Cleasby

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