US3590837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination of valve seat base and replaceable valve seats, and method of securing together and in place
Assignee: Individual
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Filing: 1969-12-30
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Granted: 1971-07-06
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Expires: 1989-12-30
Abstract
Abstract The combination of a hollow valve seat base for force fitting into a valve casing of a pump, said base having a transverse bottom structure defining a center-threaded hole, a hollow valve seat having a transverse bottom structure defining a center hole and adapted to fit into said base with center holes conforming, a bolt threaded to engage the threads of the center-threaded hole of the base through the center hole of the valve seat, and a coil spring mounted on said bolt, the spring and bolt for fastening the base and the valve seat together under constant pressure of the spring compressed between the bolthead and the valve seat bottom structure, thereby preventing the loosening of the fastening.
Inventors
- 👤 Leo Jeanise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:32
CPC Classifications
F; F16; F16K; F16K15/00; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B53/1087; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0491; Y10T137/598; Y10T137/6031; Y10T137/6035; Y10T137/6038; Y10T137/6041; Y10T137/6161; Y10T137/6164; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7856; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
38 words
A combination as described in claim 1 wherein said driven fit comprises a valve casing interiorly tapered outwardly and upwardly and said valve seat base tapered exteriorly complementary to but slightly more than said valve casing interior taper.
Claim 2
Dependent Claim
28 words
A combination as described in claim 1 wherein said seal comprises a flexible material recessed into but extending slightly therebeyond the upper outer edge of said valve seat.
Claim 3
Dependent Claim
27 words
A combination as described in claim 1 wherein said seal comprises an ''''0'''' ring partially recessed into the exterior of said valve seat above said bottom structure.
Claim 4
Independent Claim
126 words
The method of changing valve seats in a high-capacity pump having a valve casing, comprising the steps of: removing the top of the valve casing; lifting out the valve and valve spring; counter rotating a center bolt, prevented From counter rotation by vibration by a coil spring mounted thereon and compressed between bolthead and a transverse element of the valve seat, disengaging said center bolt from threaded engagement with a transverse structure of the valve seat base and releasing the compression of said coil spring; lifting out old valve seat and replacing with a new one; rotating the center bolt mounting the coil spring to threadedly engage the valve seat base through the valve seat and compress said coil spring; and replacing top of valve casing.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |