Intake valve for a high-pressure pump, in particular for...

Details Intake valve for a high-pressure pump, in particular for... Intake valve for a high-pressure pump, in particular for...

2007-11-20

2007-11-20

Stashick, Anthony (Department: 3746)

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

C417S571000, C417S454000

Reexamination Certificate

active

10494186

ABSTRACT:
An intake valve for a high pressure pump for internal combustion engine fuel having a valve body having a seat with which cooperates a shutter kept closed by a first spring of substantially constant pressure and by a second spring varying in pressure during at least part of the stroke of the piston. The springs are helical compression types and their pressures are summed on the shutter, which has a plate and a stem. The first spring is located between the valve body and a flange integral with a sleeve fitted to the stem in an adjustable position. The second spring is located between the plate and the piston.

REFERENCES:
patent: 600841 (1898-03-01), Oderman
patent: 4127362 (1978-11-01), Fladby
patent: 4570849 (1986-02-01), Klaucke et al.
patent: 5701873 (1997-12-01), Schneider
patent: 6224350 (2001-05-01), Guentert et al.
patent: 6568927 (2003-05-01), Guentert et al.
patent: 2001/0005485 (2001-06-01), Mori
patent: 198 60 672 (2000-07-01), None

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