Hydraulic valve

Details Hydraulic valve Hydraulic valve

2005-05-17

2005-05-17

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S498000, C137S541000, C251S337000

Reexamination Certificate

active

06892757

ABSTRACT:
Hydraulic valve with a valve chest (1) provided with a substantially cylindrical internal chamber (5) which may be closed by a valve disc (9) which with its conical rim (9′) engages the facial rim of the internal chamber (5), an insert member (3) being arranged in a section of the internal chamber (5) and structured as a member of sprocket-like cross-section with circular gaps (3″) between teeth forming valve passages (4) with the internal wall of the chest, the valve disc stem (6) permeating the insert member (3) being a one-piece structure and provided with a safety nut (7).

REFERENCES:
patent: 2204757 (1940-06-01), Henze
patent: 2357321 (1944-09-01), Fuller
patent: 3331389 (1967-07-01), Kirk
patent: 3379213 (1968-04-01), Billington
patent: 3749122 (1973-07-01), Gold
patent: 4269215 (1981-05-01), Odar
patent: 5293898 (1994-03-01), Masloff
patent: 855186 (1952-03-01), None
patent: 1257824 (1961-02-01), None
patent: 2 636 379 (1990-03-01), None
patent: 556863 (1943-10-01), None

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