US 3,983,907 AGranted

Valve device, especially for air cushions

AssigneeCarmo Handels- og Industri A/S

InventorElo Sorensen

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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.

Claims5

Dependent claims

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.

1 more element

Dependencies are inferred from the claim text.