Patent US3939867A successfully refreshed from Google Patents.
US3939867A
Expired / Lapsed
US
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Valve for compressors
Assignee: STAL-REFRIGERATION AB
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Filing: 1972-07-25
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Granted: 1976-02-24
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Expires: 1992-07-25
Abstract
Abstract A valve structure for compressors or the like comprising a flexible valve body normally seated over an exhaust aperture in the compressor and a valve catcher connected jointly with the valve body at one end to a valve plate and extending at an angle above and along the length of the valve body, the valve catcher having a recess in which a layer of resilient material is seated to permit the valve body to flex away from the exhaust aperture along a gradually increasing curve in response to excessive pressure.
Inventors
- 👤 Bertil Lundvik
- 👤 Nils-Arne Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:32
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/1073; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/16; F16K15/162; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/785; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
In a valve having a valve plate defining an aperture, a flexible longitudinally extending valve body normally seated and connected at one end thereof to the valve plate over the aperture, a longitudinally extending valve catcher connected at said one end thereof to the valve plate, the valve catcher being positioned above the valve body and curving away from the valve body, and the valve catcher acting as a limiting support for the valve body when the latter is flexed, the improvement in the valve catcher providing a gradual curve of the valve body when flexed and reducing the strain therein while dampening the valve body impact and operation noise, comprising a layer of resilient material retained by said valve catcher and extending along the entire length of the valve catcher portion positioned over the length of the flexible portion of the valve body, the resilient layer being positioned to permit the valve body to flex away from the aperture along a gradually increasing curve in response to increased pressure.
Claim 2
Dependent Claim
170 words
In a valve having a valve plate defining an aperture, a flexible longitudinally extending valve body normally seated and connected at one end thereof to the valve plate over the aperture, a longitudinally extending valve catcher connected at said one end thereof to the valve plate, the valve catcher being positioned above the valve body and curving away from the valve body, and the valve catcher acting as a limiting support for the valve body when the latter is flexed, the improvement in the valve catcher providing a gradual curve of the valve body when flexed and reducing the strain therein while dampening the valve body impact and operation noise, comprising a layer of resilient material retained by said valve catcher and extending along the entire length of the valve catcher portion positioned over the length of the flexible portion of the valve body, the resilient layer being positioned to permit the valve body to flex away from the aperture along a gradually increasing curve in response to increased pressure.
Claim 3
Dependent Claim
46 words
The improved valve as claimed in claim 1 wherein the valve catcher portion positioned over the length of the flexible portion of the valve body has a recess extending along the portion length and a portion of the resilient material layer is seated in the recess.
Claim 4
Dependent Claim
19 words
An improved valve according to claim 2, in which said portion of resilient material is dovetailed in said recess.
Claim 5
Dependent Claim
19 words
An improved valve according to claim 3, in which said dovetailed portion fills only a portion of said recess.
Claim 6
Dependent Claim
25 words
An improved valve according to claim 2 in which the edges defining the opening of said recess and said portion of resilient material are bevelled.
References Cited (Backward Citations)
US1892711A
Cited
US1963684A
Cited
US2118356A
Cited
US2335311A
Cited
US2345380A
Cited
US3200838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |