US4347945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump closure fastening means
Assignee: Flowserve Management Co
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Filing: 1981-05-05
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Granted: 1982-09-07
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Expires: 2001-05-05
Abstract
Abstract A closure arrangement for a pump housing having a generally cylindrical bore, comprising a closure member connected to the housing by a closure ring and a plurality of shear studs received in threaded openings, a portion of each opening being in the housing member and a portion being in the closure ring, and locking or compression means comprising compression bolts received in the closure ring and acting on the closure member.
Inventors
- 👤 Rudolf Fehlau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/218
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A closure arrangement for a pump housing having a generally cylindrical bore, comprising: a closure member having a first cylindrical portion closely fitting into said bore and a second cylindrical portion defining a shoulder with said first portion which faces in an outwardly direction with respect to said housing; a closure ring surrounding said second portion and positioned over said shoulder; a plurality of spaced threaded openings at the juncture of the periphery of said closure ring and said housing, said openings each having a generally semi-circular portion in said closure ring and a generally semi-circular portion in said housing; a threaded shear stud in each opening to join said closure ring and said housing; and compression means connected to said closure ring engaging said shoulder.
Claim 2
Dependent Claim
126 words
A closure arrangement for a pump housing having a generally cylindrical bore, comprising: a closure member having a first cylindrical portion closely fitting into said bore and a second cylindrical portion defining a shoulder with said first portion which faces in an outwardly direction with respect to said housing; a closure ring surrounding said second portion and positioned over said shoulder; a plurality of spaced threaded openings at the juncture of the periphery of said closure ring and said housing, said openings each having a generally semi-circular portion in said closure ring and a generally semi-circular portion in said housing; a threaded shear stud in each opening to join said closure ring and said housing; and compression means connected to said closure ring engaging said shoulder.
Claim 3
Dependent Claim
23 words
A closure arrangement as recited in claim 1, wherein said compression means comprises threaded bolts received in threaded openings in said closure ring.
Claim 4
Dependent Claim
25 words
A closure arrangement as recited in claim 2 further comprising a hardened insert in said pump housing forming a contact surface for said compression bolts.
Claim 5
Dependent Claim
34 words
A closure arrangement as recited in claim 1 further comprising a ring member joined to said housing and adjacent to said closure ring, said openings being in said closure ring and said ring member.
Claim 6
Dependent Claim
18 words
A closure arrangement as recited in claim 4, in which said ring member is welded to said housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |