[54] VALVE DEVICE, ESPECIALLY FOR AIR CUSHIONS
[75] Inventor: Elo Se'rensen, Espergaerde, Denmark
[73] Assignee: Carmo Handels-og Industri A/S, Denmark
[22] Filed: Dec. 31, 1975
[21] Appl. No.: 645,632
[30] Foreign Application Priority Data
July 8, 1975 Denmark 3084/75
[52] U.S. CI 137/223; 137/516.15
[511 Int. CI.'2 F16K 15/20
[58] Field of Search 137/223, 224, 226, 516.15;
46/90
[56] References Cited
UNITED STATES PATENTS
511,706 12/1893 Lamplugh 137/224
2,854,018 9/1958 Kilmarx 137/223
3,410,299 11/1968 Whittington 137/223
3,491,786 1/1970 Crossman 137/226
Primary Examiner—Harold W. Weakley
Attorney, Agent, or Firm—Hill, Gross, Simpson, Van
Santen, Steadman, Chiara & Simpson
[57] 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.
5 Claims, 5 Drawing Figures
