Fluid end

Pumps – Motor driven – Including means for facilitating assembly or disassembly of...

Reexamination Certificate

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Details

C417S454000, C417S568000, C137S884000, C137S512000

Reexamination Certificate

active

07341435

ABSTRACT:
A fluid end for a high-pressure pump including a unitary body with a plurality of horizontal passages each for receiving a reciprocating plunger at one of its ends and a pressure relief valve at the other of its ends. The body is provided with a corresponding number of vertical passages each of which intersect one of the horizontal passages and contains a suction valve at its bottom and a discharge valve at its top. A suction manifold is hingedly attached to the bottom of body to provide a flow of fluid into the body via the suction valves. A discharge passage intersects the vertical passages and receives fluid pressurized by the plungers via discharge valves and ports such from the fluid end.

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IDS from 10/114,356, now Patent No. 6,695,007, Vicars , Suction Valve.
Notice of References Cited from 10/114,356, Vicars, now Patent No. 6,695,007 for Suction Valve.
Cross-section of a suction valve alleged to be on sale one year prior to filing date.
Jan. 24, 2001-Letter to Cudd Pumping Services (2 pp).
Jan. 24, 2001-Memo to Bert Vicars (2 pp).
Jan. 30, 2001-Memo from Cudd (3 pp).
Feb. 1, 2001-Letter to Cudd (2 pp).
Feb. 15, 2001-Letter to Cudd (2 pp).
Feb. 15, 2001-Letter to Conroe Plastic Mold, Inc. (1 p).
Mar. 7, 2001-Letter to C.B. Gear & Machine, Inc. (4 pp).
May 18, 2001-Letter to Conroe Plastic Mold, Inc. (1 p).
May 31, 2001-Letter to Cudd (2 pp).
Jul. 16, 2001-Letter to Conroe (2 pp).
Jul. 18, 2001 - Letter to Cudd (Jimmy Brown 1 page).
Jul. 18, 2001 - Letter to Cudd (Billy DeShazer, 2 pp).
Feb. 12, 2002 - Letter to Conroe (1 page).
Cross-section of a suction valve which was on sale more then one year prior to the filing date Previously cited by applicant as being alleged to have been on sale.

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