US 7,320,334 B1 | ||
Valve Assembly | ||
Robert E. Trimble, Sullivan, Ill. (US); Tage Christiansen, Nordborg (Denmark); Anders Kryhlmand, Sydals (Denmark); and Thomas Kopel, Sullivan, Ill. (US) | ||
Assigned to Hydro-Gear Limited Partnership, Sullivan, Ill. (US) | ||
Filed on Jun. 13, 2006, as Appl. No. 11/423,744. | ||
Application 11/227571 is a division of application No. 11/082313, filed on Mar. 17, 2005, granted, now 6,964,280. | ||
Application 11/423744 is a continuation of application No. 11/227571, filed on Sep. 15, 2005, granted, now 7,066,199. | ||
Application 11/082313 is a continuation of application No. 10/863074, filed on Jun. 08, 2004, granted, now 6,986,363. | ||
Application 10/863074 is a continuation of application No. 10/704893, filed on Nov. 10, 2003, granted, now 6,761,182. | ||
Application 10/704893 is a continuation of application No. 10/115149, filed on Apr. 03, 2002, granted, now 6,691,512. | ||
Application 10/115149 is a continuation of application No. 10/115315, filed on Apr. 03, 2002, granted, now 6,719,005. | ||
This patent is subject to a terminal disclaimer. | ||
Int. Cl. F16K 17/196 (2006.01) |
U.S. Cl. 137—493.1 [137/493.3; 137/493.5; 137/493.6; 137/493.8; 137/513.3] | 14 Claims |
1. A valve for use in a hydraulic system between a first fluid side and a second fluid side, the valve comprising:
a valve seat moveable between a first, closed position and a second, open position, the valve seat having a first surface
and a second surface connected by a generally circular periphery, wherein fluid flows from the first fluid side to the second
fluid side around the periphery when the valve seat is in the second, open position;
a first opening formed in the first surface of the valve seat, a second opening formed in the second surface of the valve
seat and a first passage extending through the valve seat from the first opening to the second opening, the first passage
having a generally annular inner surface;
a valve stem extending entirely through the first passage and the first and second openings, the valve stem having a closed
position where it prevents fluid from flowing through the first passage and an open position where it permits fluid to flow
through the first passage from the second fluid side to the first fluid side; and
a plurality of ribs extending generally parallel to the first passage, each rib comprising a first end abutting the second
surface of the valve seat, a second end offset from the second surface of the valve seat, an inner edge formed generally tangential
to the inner surface of the first passage, an outer edge formed opposite the inner edge and a plurality of sides extending
between the first and second ends and extending between the inner and outer edges.
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