Patent US4624286A successfully refreshed from Google Patents.
US4624286A
Expired / Lapsed
US
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Degasifying valve for containers
Assignee: Individual
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Filing: 1985-04-04
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Granted: 1986-11-25
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Expires: 2005-04-04
Abstract
Abstract A degasifying valve for storage and/or transport containers especially for the storage and/or transportation of dangerous liquids has a base provided with a degasifying orifice which on the downstream side of this base is surrounded by at least one annular rib. Biased towards that rib or those ribs respectively, is a diaphragm-like spring element covering at least the area enclosed by the rib or the ribs, respectively.
Inventors
- 👤 Walter Frohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:46
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1633; B65D51/1644; F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
110 words
A degasifying valve for storage and/or transport containers especially for storing and/or transportation of dangerous liquids, comprising a valve housing having a base provided with a degasifying orifice, the downstream mouth of said orifice being surrounded by a valve seat formed by at least one substantially knife-edge like ring-shaped endless rib, a diaphragm-like spring element biased into sealing contact with said valve seat and covering at least the area enclosed by said valve seat, and means for supporting the upper peripheral edge of said diaphragm element so that the lower peripheral edge of said diaphragm element is spaced from the valve housing to permit free movement at its peripheral edge.
Claim 2
Dependent Claim
110 words
A degasifying valve for storage and/or transport containers especially for storing and/or transportation of dangerous liquids, comprising a valve housing having a base provided with a degasifying orifice, the downstream mouth of said orifice being surrounded by a valve seat formed by at least one substantially knife-edge like ring-shaped endless rib, a diaphragm-like spring element biased into sealing contact with said valve seat and covering at least the area enclosed by said valve seat, and means for supporting the upper peripheral edge of said diaphragm element so that the lower peripheral edge of said diaphragm element is spaced from the valve housing to permit free movement at its peripheral edge.
Claim 3
Dependent Claim
29 words
A degasifying valve as claimed in claim 1, wherein the valve seat encloses at least one inner annular rib, said inner rib being interrupted by at least one opening.
Claim 4
Dependent Claim
24 words
A degasifying valve as claimed in claim 1, comprising at least two inner ribs having different diameters and a staggered arrangement of their openings.
Claim 5
Dependent Claim
26 words
A degasifying valve as claimed in claim 1, wherein the spring element has a central portion covering at least the area enclosed by the valve seat.
Claim 6
Dependent Claim
43 words
A degasifying valve as claimed in claim 1, wherein the spring element has a central portion covering at least the area enclosed by the valve seat, an annular rim portion, and a number of arms connecting the central portion with the rim portion.
Claim 7
Dependent Claim
29 words
A degasifying valve as claimed in claim 6, wherein the arms extend in a radial direction and their width increases corresponding to the increasing distance from the central portion.
Claim 8
Dependent Claim
104 words
A degasifying valve as claimed in claim 1, wherein a plug is provided with a shaft and a cover plate, said shaft engaging the degasifying orifice and said cover plate covering the upstream mouth of the degasifying orifice, one of the shaft and the side wall of said orifice being provided with grooves extending in the direction of gas flow through said orifice, and one of the surface of the cover plate facing the base and the surface of the base facing the cover plate being profiled in order to form a flow path between the periphery of the cover plate and said grooves.
Claim 9
Dependent Claim
27 words
A degasifying valve as claimed in claim 7, wherein a layer made of a material permeable to gas is placed between said cover plate and said orifice.
Claim 10
Dependent Claim
26 words
A degasifying valve as claimed in claim 8, wherein said layer is made of a chemically resistant artificial fleece permeable to gas but impermeable to liquids.
Claim 11
Dependent Claim
21 words
A degasifying valve as claimed in claim 8, wherein the cover plate is provided with through bores opening into said layer.
Claim 12
Dependent Claim
30 words
degasifying valve as claimed in claim 10, wherein the surface of the cover plate facing said layer is provided with an annu1ar groove, said bores opening into said annular groove.
Claim 13
Dependent Claim
55 words
A degasifying valve as claimed in claim 1, wherein the spring element is provided with a rim portion having a larger diameter than the valve seat, a thrust member supported by said base biasing said rim portion in an upstream direction to such an extend that the biasing force equals the intended valve opening pressure.
Claim 14
Dependent Claim
38 words
A degasifying valve as claimed in claim 12, wherein said base is provided with a flat cavity, the degasifying orifice passing through the bottom of said cavity, and the thrust member being a cover plate covering said cavity.
Claim 15
Dependent Claim
51 words
A degasifying valve as claimed in claim 13, wherein the side wall of the cavity is provided with a shoulder supporting the cover plate, and wherein the cover plate is provided with an annular projection facing said rim portion of the spring element, the cover plate being secured to said base.
Claim 16
Dependent Claim
40 words
A degasifying valve as claimed in claim 14, wherein said base is provided with fastening lugs and wherein said cover plate and said base are connected by means of said fastening lugs and by means of thermal or ultrasonic welding.
Claim 17
Dependent Claim
16 words
In combination a storage and/or transport container and a degasifying valve as claimed in claim 1.
Claim 18
Dependent Claim
101 words
A degasifying valve as claimed in claim 1, wherein a plug is provided with a shaft and a cover plate, said shaft engaging the degasifying orifice and said cover plate covering the upstream mouth of the degasifying orifice, the shaft and side wall of said orifice being provided with grooves extending in the direction of gas flow through said orifice, and one of the surface of the cover plate facing the base and the surface of the base facing the cover plate being profiled in order to form a flow path between the periphery of the cover plate and said grooves.
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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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |