US4932836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump with heat exchanger
Assignee: Flowserve Management Co
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Filing: 1989-05-11
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Granted: 1990-06-12
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Expires: 2009-05-11
Abstract
Abstract A pump having a heat exchanger including a rotating baffle sleeve secured to the pump shaft. A seal baffle on the rotating baffle sleeve extends over the pump seal assembly cartridge. A cooling cylinder containing circulating component cooling water is suspended within the rotating baffle sleeve and defines a flow passageway therein for cooling heated product water, before the product water contacts the shaft seal. A seal injector distributor ring uniformly distributes seal injection water to the seal. A thermal shield in the heat exchanger reduces thermal stresses in the heat exchanger. A slotted or grooved keyway spacer ring facilitates replacement and alignment of a hydrostatic bearing.
Inventors
- 👤 Clark S. Boster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/162; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/128; F04D29/58; F04D29/586; F04D29/588
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A radially grooved keyway spacer ring for providing alignment between a hydrostatic bearing and a pump cover comprising: a ring positioned between said cover and said hydrostatic bearing; said ring having a plurality of equally spaced holes and at least four grooves equally radially spaced apart and radially oriented.
Claim 2
Dependent Claim
49 words
A radially grooved keyway spacer ring for providing alignment between a hydrostatic bearing and a pump cover comprising: a ring positioned between said cover and said hydrostatic bearing; said ring having a plurality of equally spaced holes and at least four grooves equally radially spaced apart and radially oriented.
Claim 3
Dependent Claim
83 words
In a pump having a pump cover and a hydrostatic bearing, the improvement comprising: a spacer ring positioned between said cover and said hydrostatic bearing; said spacer ring having a plurality of circumferentially spaced holes and a plurality of circumferentially spaced grooves; key means projecting from said cover and each received in one of said grooves for aligning said cover and said hydrostatic bearing; and bolt means passing through at least some of said holes for connecting said aligned cover and hydrostatic bearing.
Claim 4
Dependent Claim
83 words
In a pump having a pump cover and a hydrostatic bearing, the improvement comprising: a spacer ring positioned between said cover and said hydrostatic bearing; said spacer ring having a plurality of circumferentially spaced holes and a plurality of circumferentially spaced grooves; key means projecting from said cover and each received in one of said grooves for aligning said cover and said hydrostatic bearing; and bolt means passing through at least some of said holes for connecting said aligned cover and hydrostatic bearing.
Claim 5
Dependent Claim
22 words
In a pump as recited in claim 2, wherein said grooves are equally spaced and open to the periphery of said ring.
Claim 6
Dependent Claim
23 words
In a pump as recited in claim 2, wherein said grooves are equally spaced and are formed within the confines of said ring.
Claim 7
Dependent Claim
34 words
In a pump as recited in claim 2, wherein said holes are larger in diameter than the diameter of said bolts to insure the said alignment of said cover and hydrostatic bearing when connected.
Claim 8
Dependent Claim
27 words
In a pump as in claim 2, wherein said circumferentially spaced holes are equally spaced from each other and said grooves are equally spaced from each other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |