High impact discharge valve

Details High impact discharge valve High impact discharge valve

2007-01-30

2007-01-30

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S514500, C137S540000, C137S904000, C251S064000, C251S284000, C251S337000

Reexamination Certificate

active

11128516

ABSTRACT:
A check valve for use in a pump. The valve is arranged to be subjected to severe service conditions and high impact loads, yet be resistant to damage to its components. The check includes a body, a valve seat, a poppet and an impact cushion. The poppet is movably coupled to the valve seat and is biased by a spring into engagement with the valve seat. Upon the opening of the valve the poppet moves off of the valve seat and into engagement with the impact cushion against the spring bias. The impact cushion is movably coupled to the valve body and is biased by another spring. When the poppet engages the impact cushion they stay together and move, with the movement of the impact cushion absorbing energy from the poppet.

REFERENCES:
patent: 1963684 (1934-06-01), Shimer
patent: 4340085 (1982-07-01), Crawford et al.
patent: 4447195 (1984-05-01), Schuck
patent: 4559786 (1985-12-01), Schuck
patent: 4967790 (1990-11-01), Ganske
patent: 5240036 (1993-08-01), Morris
patent: 5746246 (1998-05-01), Yokota et al.

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