US3870439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure pump fluid end
Assignee: Butterworth Jetting Systems Inc
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Filing: 1973-01-08
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Granted: 1975-03-11
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Expires: 1993-01-08
Abstract
Abstract A new and improved fluid end for a high pressure pump, wherein the valves are assembled with a valve seat unit to form a readily removable and replaceable valve cartridge, and wherein the packing around the pump plunger is also readily accessible for replacement or repacking without requiring special tools. Peak pressures developed by the pump plunger, particularly during cavitation, are transmitted to the valve seat unit and the pump plunger packing rather than the much more expensive pump manifold so that if failure occurs due to such high pressures, the failure is in the readily replaceable and less expensive valve seat and pump packing.
Inventors
- 👤 John E Stachowiak
- 👤 John B Goss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B53/1025; F04B53/16; F04B53/162; F04B53/164
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
293 words
A high pressure pump fluid end, comprising, a manifold block having both an inlet suction manifold and an outlet discharge manifold located therein, a pump cylinder mounted adjacent and perpendicular to said manifold block and having a plunger opening therein, connector means releasably connecting said pump cylinder to said manifold block, a pump plunger operably mounted in said pump cylinder for reciprocation in said opening, said manifold block including a recessed valve cartridge cavity having communication with said inlet manifold, said outlet manifold and said plunger opening, said caviTy being located at the interface between the block and the plunger opening, and being larger than the plunger opening and encompassing said plunger opening, an integral replaceable generally oval valve cartridge disposed in said valve cartridge cavity and having a first valve means therein for permitting fluid flow from said inlet manifold into said plunger opening upon movement of said pump plunger in a direction away from said manifold block, and a second valve means therein for permitting fluid flow from said plunger opening to said outlet discharge manifold upon movement of said pump plunger in a direction towards said manifold block, said first and second valve means comprising wing guided valves situated wholly within the cartridge, mounted side by side and parallel to the axis of the pump plunger, said cartridge positioned between the plunger opening and said manifold block, and extending outwardly beyond the depth of the cavity, and an oval seal mounted in a groove in the cartridge and encircling said plunger opening for sealing between said pump cylinder and said valve cartridge whereby fluid pumped by said pump plunger is caused to exert peak fluid pressure directly on said cartridge and peak fluid pressure is isolated from said manifold block.
Claim 2
Dependent Claim
293 words
A high pressure pump fluid end, comprising, a manifold block having both an inlet suction manifold and an outlet discharge manifold located therein, a pump cylinder mounted adjacent and perpendicular to said manifold block and having a plunger opening therein, connector means releasably connecting said pump cylinder to said manifold block, a pump plunger operably mounted in said pump cylinder for reciprocation in said opening, said manifold block including a recessed valve cartridge cavity having communication with said inlet manifold, said outlet manifold and said plunger opening, said caviTy being located at the interface between the block and the plunger opening, and being larger than the plunger opening and encompassing said plunger opening, an integral replaceable generally oval valve cartridge disposed in said valve cartridge cavity and having a first valve means therein for permitting fluid flow from said inlet manifold into said plunger opening upon movement of said pump plunger in a direction away from said manifold block, and a second valve means therein for permitting fluid flow from said plunger opening to said outlet discharge manifold upon movement of said pump plunger in a direction towards said manifold block, said first and second valve means comprising wing guided valves situated wholly within the cartridge, mounted side by side and parallel to the axis of the pump plunger, said cartridge positioned between the plunger opening and said manifold block, and extending outwardly beyond the depth of the cavity, and an oval seal mounted in a groove in the cartridge and encircling said plunger opening for sealing between said pump cylinder and said valve cartridge whereby fluid pumped by said pump plunger is caused to exert peak fluid pressure directly on said cartridge and peak fluid pressure is isolated from said manifold block.
Claim 3
Dependent Claim
293 words
A high pressure pump fluid end, comprising, a manifold block having both an inlet suction manifold and an outlet discharge manifold located therein, a pump cylinder mounted adjacent and perpendicular to said manifold block and having a plunger opening therein, connector means releasably connecting said pump cylinder to said manifold block, a pump plunger operably mounted in said pump cylinder for reciprocation in said opening, said manifold block including a recessed valve cartridge cavity having communication with said inlet manifold, said outlet manifold and said plunger opening, said caviTy being located at the interface between the block and the plunger opening, and being larger than the plunger opening and encompassing said plunger opening, an integral replaceable generally oval valve cartridge disposed in said valve cartridge cavity and having a first valve means therein for permitting fluid flow from said inlet manifold into said plunger opening upon movement of said pump plunger in a direction away from said manifold block, and a second valve means therein for permitting fluid flow from said plunger opening to said outlet discharge manifold upon movement of said pump plunger in a direction towards said manifold block, said first and second valve means comprising wing guided valves situated wholly within the cartridge, mounted side by side and parallel to the axis of the pump plunger, said cartridge positioned between the plunger opening and said manifold block, and extending outwardly beyond the depth of the cavity, and an oval seal mounted in a groove in the cartridge and encircling said plunger opening for sealing between said pump cylinder and said valve cartridge whereby fluid pumped by said pump plunger is caused to exert peak fluid pressure directly on said cartridge and peak fluid pressure is isolated from said manifold block.
Claim 4
Dependent Claim
293 words
A high pressure pump fluid end, comprising, a manifold block having both an inlet suction manifold and an outlet discharge manifold located therein, a pump cylinder mounted adjacent and perpendicular to said manifold block and having a plunger opening therein, connector means releasably connecting said pump cylinder to said manifold block, a pump plunger operably mounted in said pump cylinder for reciprocation in said opening, said manifold block including a recessed valve cartridge cavity having communication with said inlet manifold, said outlet manifold and said plunger opening, said caviTy being located at the interface between the block and the plunger opening, and being larger than the plunger opening and encompassing said plunger opening, an integral replaceable generally oval valve cartridge disposed in said valve cartridge cavity and having a first valve means therein for permitting fluid flow from said inlet manifold into said plunger opening upon movement of said pump plunger in a direction away from said manifold block, and a second valve means therein for permitting fluid flow from said plunger opening to said outlet discharge manifold upon movement of said pump plunger in a direction towards said manifold block, said first and second valve means comprising wing guided valves situated wholly within the cartridge, mounted side by side and parallel to the axis of the pump plunger, said cartridge positioned between the plunger opening and said manifold block, and extending outwardly beyond the depth of the cavity, and an oval seal mounted in a groove in the cartridge and encircling said plunger opening for sealing between said pump cylinder and said valve cartridge whereby fluid pumped by said pump plunger is caused to exert peak fluid pressure directly on said cartridge and peak fluid pressure is isolated from said manifold block.
Claim 5
Dependent Claim
19 words
The apparatus of claim 1 wherein said first and second valve means include spherically shaped valve seats and elements.
Claim 6
Dependent Claim
40 words
The apparatus of claim 1 including, a second circular seal means between the cartridge and said block sealing about the inlet suction manifold, and third seal circular means between the cartridge and the block sealing about the outlet discharge manifold.
References Cited (Backward Citations)
US1610499A
Cited
US2092641A
Cited
US2350502A
Cited
US3114326A
Cited
US3260217A
Cited
US3370545A
Cited
US3427988A
Cited
US3508849A
Cited
US3726612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |