Method and device for pressure pulse generation

Details Method and device for pressure pulse generation Method and device for pressure pulse generation

2007-06-05

2007-06-05

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090140, C123S090150, C251S129030

Reexamination Certificate

active

10515921

ABSTRACT:
A device for generating pressure pulses, includes a pressure fluid source and a pressure fluid depression, a pressure fluid circuit, a valve body displaceably located in a chamber, a first branch and a second branch the branches leaving to opposite sides of the valve body, the chamber having an opening on one side of the valve body, the opening communicating with the first branch and permitting pressure fluid to flow out of the chamber. The valve body, under the action of the pressure fluid in the branches, is displaceable to a first position in which it closes the opening and to a second position in which it leaves the opening open for out-flow of the pressure fluid. The device includes a first valve member arranged to permit or interrupt communication between the chamber and the pressure fluid source through the second branch upstream of the chamber.

REFERENCES:
patent: 6752106 (2004-06-01), Hedman
patent: 7121237 (2006-10-01), Hedman
patent: 02/04790 (2002-01-01), None

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