Patent US3823735A successfully refreshed from Google Patents.
US3823735A
Expired / Lapsed
US
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Uniflow valve
Assignee: Individual
•
Filing: 1971-11-11
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Granted: 1974-07-16
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Expires: 1991-11-11
Abstract
Abstract A uniflow valve comprising a pack of flexible plates alternating with valve seats having portions of varying thickness. The flexible plates have inlet channels for the working fluid and at least some part of the flexible plates have teeth which close the fluid inlet channels on the length from the roots to the tops of the teeth. The valve seats are provided with fluid outlet channels facing the spaces between the teeth.
Inventors
- 👤 M Frenkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:12
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/1401; F04; F04B; F04B39/00; F04B39/10; F04B39/1066; F16K15/1402; F16K15/16; F16K2200/00; F16K2200/20; F16K2200/203; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7859
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A uniflow valve comprising a pack of flexible plates alternating with valve seats having portions of varying thickness; the valve seats having fluid inlet channels formed in said portions of varying thickness where the fluid flows over the plate surface, at least part of the flexible plates being provided with teeth closing the fluid inlet channels on a length from the root to the top of the teeth; each having a surface contacting the plate when the valve is closed, another surface which limits the motion of an adjacent plate when the valve is open, and fluid outlet channels facing the spaces between the teeth.
Claim 2
Dependent Claim
105 words
A uniflow valve comprising a pack of flexible plates alternating with valve seats having portions of varying thickness; the valve seats having fluid inlet channels formed in said portions of varying thickness where the fluid flows over the plate surface, at least part of the flexible plates being provided with teeth closing the fluid inlet channels on a length from the root to the top of the teeth; each having a surface contacting the plate when the valve is closed, another surface which limits the motion of an adjacent plate when the valve is open, and fluid outlet channels facing the spaces between the teeth.
Claim 3
Dependent Claim
12 words
A valve according to claim 1 wherein each plate has said teeth.
Claim 4
Dependent Claim
15 words
A valve according to claim 2 wherein each plate tooth faces one fluid inlet channel.
Claim 5
Dependent Claim
14 words
A valve according to claim 2 wherein each tooth faces several fluid inlet channels.
Claim 6
Dependent Claim
24 words
A valve according to claim 2 wherein some of the teeth face one fluid inlet channel while other teeth face several fluid inlet channels.
Claim 7
Dependent Claim
31 words
A valve according to claim 1 wherein the fluid outlet channels are located in the seat portions at the side of the surface which contacts the plates in the closed valve.
Claim 8
Dependent Claim
34 words
A valve according to claim 6 wherein the fluid outlet channels are located in the seat portions at the side of the surface which limits the motion of the plate in the open valve.
Claim 9
Dependent Claim
49 words
A valve according to claim 6 wherein the fluid outlet channels are located in the seat portions both at the side of the surface contacting the plates in the closed valve and at the side of the surface which limits the motion of the plate in the open valve.
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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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |