Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Reexamination Certificate
2006-05-23
2006-05-23
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
C417S253000, C417S295000
Reexamination Certificate
active
07048000
ABSTRACT:
A pressure reducing valve includes a housing having a passage therein, a valve body disposed within the passage, and a piston slideably disposed within the passage. The valve body includes a wall arranged transverse to the passage and dividing the passage into an input side and an output side, the wall having a plurality of openings passing therethrough, a portion of the wall between the openings and facing the output side defining a sealing surface. The piston includes a channel passing longitudinally therethrough with a sealing ledge surrounding the channel on a first end, a flange surrounding the channel on a second end, and an annular shoulder surrounding the sealing ledge. Fluid pressure at the input side acts on the shoulder and biases the piston toward the output side and fluid pressure at the output side acts on the flange and biases the piston toward the input side.
REFERENCES:
patent: 3188916 (1965-06-01), Beatty
patent: 3435843 (1969-04-01), Spencer
patent: 3437109 (1969-04-01), Egerer et al.
patent: 3545485 (1970-12-01), Clark
patent: 3623776 (1971-11-01), Wellman
patent: 3982795 (1976-09-01), Gruner
patent: 4438980 (1984-03-01), Lippiatt
patent: 4459085 (1984-07-01), Tonegawa
patent: 4470427 (1984-09-01), Maillochaud
patent: 4498848 (1985-02-01), Petrovsky et al.
patent: 4553907 (1985-11-01), Heger et al.
patent: 4563134 (1986-01-01), Hitzelberger
patent: 4922955 (1990-05-01), Uri
patent: 5393130 (1995-02-01), Graham
patent: 5425572 (1995-06-01), Koelzer et al.
patent: 6267455 (2001-07-01), Graham
patent: 6629709 (2003-10-01), Tunley et al.
Haldex Brake Corporation
Hepperle Stephen M.
St. Onge Steward Johnston & Reens LLC
LandOfFree
Pressure reducing valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure reducing valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure reducing valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3561102