초록 ▼

An apparatus for dispensing product from a container in which first and second members are provided in a vessel which is disposed in the container. The first member defines with the vessel a first chamber, and the second member defines with the first member a second chamber. One of the members moves

An apparatus for dispensing product from a container in which first and second members are provided in a vessel which is disposed in the container. The first member defines with the vessel a first chamber, and the second member defines with the first member a second chamber. One of the members moves in response to the pressure in the container to a first position relative to the other member and pressure is exerted in the second chamber on said first member to move it to a second position in response to the pressure in the container decreasing below the predetermined pressure. When the first member moves to the second position the first chamber is connected with the container to permit the pressurized gas in the first chamber to pass to the container and when the first member moves to the first position this connection is disconnected to prevent the passage of the gas.

대표청구항 ▼

Apparatus for maintaining a constant predetermined pressure in a pressurized container for dispensing product contained in the container from the container at said constant pressure, said apparatus comprising: a vessel disposed in said container, a cylinder member disposed in said vessel and definin

Apparatus for maintaining a constant predetermined pressure in a pressurized container for dispensing product contained in the container from the container at said constant pressure, said apparatus comprising: a vessel disposed in said container, a cylinder member disposed in said vessel and defining with said vessel a first chamber for containing pressurized gas; a piston member disposed in said vessel and defining with said cylinder member a second chamber; one of said members being exposed to the pressure in said container for moving to a first position relative to the other member in response to said predetermined pressure in said container; means in said second chamber for moving said one member to a second position relative to said other member in response to the pressure in said container decreasing below said predetermined pressure; and means responsive to said one member moving to said second position for connecting said first chamber with said container to permit said pressurized gas to pass from said first chamber to said container, said latter means being responsive to said one member moving to said first position for disconnecting said first chamber with said container to prevent said passages of said gas.