Self-aligning double-acting simplex plunger pump

Details Self-aligning double-acting simplex plunger pump Self-aligning double-acting simplex plunger pump

2000-04-26

2001-07-10

Koczo, Michael (Department: 3746)

Pumps

Motor driven

Including means for facilitating assembly or disassembly of...

C417S415000, C417S537000

Reexamination Certificate

active

06257843

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention pertains to an improvement in hydraulic pumps and is generically applicable to double-acting simplex plunger pumps of both the “plunger” and “piston” types.
Pertinent prior art includes U.S. Pat. No. 5,173,039 issued to the present applicant Dec. 22, 1992, and U.S. Pat. No. 5,183,396 issued to James E. Cook & O. Harald S.
Erikson on Feb. 2, 1993. The latter patent discloses an alignment means comprising in part check valves for maintaining alignment of a pair of spaced-apart combined-plunger stuffing box and head members, and the reciprocating plunger or piston.
The present invention provides an improvement over the above-mentioned patents by providing a unique self-aligning system for the combined plunger-stuffing box head members and the plunger. My present invention lends itself to much reduced manufacturing costs, as well as higher reliability and precision alignment of the aforesaid parts.
SUMMARY OF THE INVENTION
The present invention provides an improved alignment system for a double-acting simplex plunger pump. In broad terms, this invention provides alignment means on the motor end face engaging surface of the combined plunger stuffing box and head members, which alignment means co act with additional alignment means in the end face of the drive motor for the pump.


REFERENCES:
patent: 4978284 (1990-12-01), Cook et al.
patent: 5058485 (1991-10-01), Cardillo
patent: 5173039 (1992-12-01), Cook
patent: 5183396 (1993-02-01), Cook et al.

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