Stopper for a container such as a bottle, and a pump connectable thereto for extraction of gaseous medium from or pumping in thereof into the container
OwnerBernardus J. J. A. Schneiderinventor
Life of this patent
Estimating the term…
Abstract
A stopper having a slit valve is provided for a bottle which is adapted to be used with a pump for evacuating air from the bottle to preserve wine being consumed from the bottle or by increasing the pressure in the bottle, for example, to maintain the carbon dioxide content in a soft drink being consumed from the bottle. The stopper and valve are integral and are made of the same elastic material. The valve is surrounded by a raised circular edge for protecting the slit valve. A circular flange is provided which rests on the top of the bottle neck. The raised circular edge is shaped to sealably receive a pump housing.
Claims22
The stopper for a bottle or similar type container adapted to have a pump device mounted thereon comprising a shaft having an axis for said stopper, said stopper adapted to fit in clamping and sealing relation inside the neck of a bottle, said shaft having a channel therethrough provided with a membrane type non-return valve, said stopper having a portion outside the neck of the bottle when positioned in the neck of the bottle which portion is adapted to receive in clamping relation a suction-pressure pump device, the improvement comprising:
- said stopper and membrane valve are integral and made of the same elastic material,
- said membrane valve having a slit with cooperating elastic parts on opposite sides thereof of the same material as said stopper, said membrane valve positioned to close said channel, and
- said portion of said stopper adapted to receive the pump device having a radially extending circumferential flange extending outside the neck of the bottle when mounted thereon and being perpendicular to the axis of said stopper and adapted to rest upon the neck of a bottle, said portion of said stopper having a circumferential ridge concentric with said circumferential flange and having an outer diameter smaller than the outer diameter of said circumferential flange,
- said ridge having an outer conical side face tapering away from said circumferential flange towards said axis of said stopper, said circumferential ridge surrounding said membrane valve which together with said circumferential flange may sealably receive a pump device.
A stopper and pump apparatus for evacuating gas from a bottle or the like or for the application of pressure by forcing gas into said bottle having a stopper with a shaft for insertion and removal from the neck of a bottle, said shaft having a central channel therein and a valve for opening and closing said central channel and a hand-operates pump coupled to said stopper, the improved stopper and pump apparatus comprising:
- a peripheral flange on said stopper having an outside diameter larger than the outside diameter of said shaft whereby when said stopper is inserted into the neck of a bottle the shaft of the stopper extends downwardly into the neck of the bottle with said peripheral flange resting on the top of the bottle,
- a circumferential ridge concentric with, spaced inwardly on, and extending upwardly from said peripheral flange forming an annular shelf therewith,
- said hand operated pump having a downwardly extending annular skirt adapted to be seated for frictional and sealing engagement with said annular shelf whereby said hand operated pump is engageable with and operated directly on said stopper for changing the pressure in said bottle.
Dependencies are inferred from the claim text.