Patent US3983907A successfully refreshed from Google Patents.
US3983907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve device, especially for air cushions
Assignee: CARMO HANDELS OG INDUSTRI AS
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Filing: 1975-12-31
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Granted: 1976-10-05
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Expires: 1995-12-31
Abstract
Abstract A valve device, especially for an air cushion of plastic sheet, said device having a first portion which is adapted to be mounted in an aperture in the wall of the cushion, said first portion having a relatively large bore which is adapted to constitute an outlet for emptying the air cushion, a second portion of the valve device being adapted to be screwed into the bore in the first portion, the two portions having valve surfaces which are adapted to close the bore airtightly when the second portion is screwed completely into the bore, a relatively small air passage in the second portion adapted to constitute an inlet for pressurized air during inflation of the air cushion, a non-return valve in said air passage, and stop means at the outer end of said second portion adapted to prevent the second portion's becoming completely detached from the first portion.
Inventors
- 👤 Elo Sorensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:52
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; F16K15/202; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7861
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A valve device for an air cushion of sheet material, comprising: a. a housing for being disposed in an aperture in the air cushion, and having an annular mounting flange for being secured to the sheet material, said housing having a bore with internal screw threads, and a valve seat surrounding the inner end of said bore; b. a threaded closing member carried in said bore, said closing member having a passage therethrough with a non-return valve therein, said closing member having an operating portion extending through said bore to be outside the air cushion, said closing member having a valve portion for being disposed inside the air cushion and sealingly engageable with said seat when the closing member is in its outermost position, there being at least one axially extending passage therein for venting the interior of the cushion to the atmosphere when said valve portion is unseated; and c. stop means secured to the outer end of said operating portion and engageable with said housing to preclude the closing member from being completely unscrewed from said threads.
Claim 2
Dependent Claim
179 words
A valve device for an air cushion of sheet material, comprising: a. a housing for being disposed in an aperture in the air cushion, and having an annular mounting flange for being secured to the sheet material, said housing having a bore with internal screw threads, and a valve seat surrounding the inner end of said bore; b. a threaded closing member carried in said bore, said closing member having a passage therethrough with a non-return valve therein, said closing member having an operating portion extending through said bore to be outside the air cushion, said closing member having a valve portion for being disposed inside the air cushion and sealingly engageable with said seat when the closing member is in its outermost position, there being at least one axially extending passage therein for venting the interior of the cushion to the atmosphere when said valve portion is unseated; and c. stop means secured to the outer end of said operating portion and engageable with said housing to preclude the closing member from being completely unscrewed from said threads.
Claim 3
Dependent Claim
48 words
A valve device according to claim 1 in which said closing member has a cylindrical portion from which said operating portion extends, said operating portion having at least one partial cylindrical surface which is threaded into said bore by which partialness said one axially extending passage is provided.
Claim 4
Dependent Claim
36 words
A valve device according to claim 1 in which said closing member has a cylindrical portion which is partially cut-away to provide two oppositely facing flat surfaces separated by two oppositely facing partial-cylindrical threaded surfaces therebetween.
Claim 5
Dependent Claim
26 words
A valve device according to claim 1 in which said stop means is an annular handle portion secured to the outer end of said closing member.
Claim 6
Dependent Claim
52 words
A valve device according to claim 1 in which said stop means comprises at least one flange portion at the outer end of said closing member, said flange portion being deflectable in response to heat to enable passage through said threaded bore on assembling of said closing member into said threaded bore.
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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |