Pumps – Expansible chamber type – Having pulsation dampening fluid receiving space
Patent
1994-09-23
1996-05-14
Gluck, Richard E.
Pumps
Expansible chamber type
Having pulsation dampening fluid receiving space
F04B 1100
Patent
active
055162665
ABSTRACT:
A pressure pulse damper for a vehicle fuel pump which dampens output fuel pressure pulses and reduces audible noise emanating from the pump. The damper is a thin-wall tube pinched off and sealed at its ends to form at least one chamber, with a compressible gas sealed therein preferably at superatmospheric pressure. Preferably to provide multiple chambers with gas therein, the tube is also pinched together and sealed at locations between its ends. To provide further dampening an elongate body of resilient foam material may be disposed in each chamber.
REFERENCES:
patent: 2530190 (1950-11-01), Carver
patent: 4113434 (1978-09-01), Tanaka et al.
patent: 5035588 (1991-07-01), Tuckey
patent: 5122039 (1939-06-01), Tuckey
patent: 5141415 (1992-08-01), Budecker et al.
patent: 5374169 (1994-12-01), Talaski
Gluck Richard E.
Walbro Corporation
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