Noise attenuation in a hydraulic circuit

Details Noise attenuation in a hydraulic circuit Noise attenuation in a hydraulic circuit

2005-02-15

2005-02-15

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

C060S469000, C417S540000

Reexamination Certificate

active

06854269

ABSTRACT:
A method is provided for attenuating noise in a hydraulic circuit having a pump in fluid communication with a hydraulic actuator by a conduit. The method includes supplying a flow restricting device in the conduit and generating a signal representative of a fluid fluctuation in the conduit downstream of the flow restricting device. A bypass loop is provided in parallel with the flow restricting device and the bypass has a valve. The valve is controlled based on the generated signal to generate a corrective fluid flow to attenuate the noise.

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patent: 6119802 (2000-09-01), Puett, Jr.
patent: 6234758 (2001-05-01), Pawelski

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