Dispensing – With recorder – register – indicator – signal or exhibitor – Position or extent of motion indicator
Patent
1998-11-16
2000-05-30
Derakshani, Philippe
Dispensing
With recorder, register, indicator, signal or exhibitor
Position or extent of motion indicator
222334, 222389, 222397, B67D 522
Patent
active
060681608
ABSTRACT:
An apparatus and method are disclosed to dispense a product out of a receptacle by moving a free-floating piston back and forth within the receptacle. Pressurized gas is used to move the piston toward the product, thereby forcing the product out of the receptacle. The pressure on the piston is released by exhausting the pressurized gas out of the receptacle through a release valve. To retract the piston away from the product, the pressurized gas is sent through a venturi that connects to the receptacle via the same aperture that is used to deliver the pressurized gas to the receptacle. The flow of pressurized gas through the venturi creates a vacuum in the receptacle that pulls the piston away from the product.
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patent: 5492249 (1996-02-01), Beach
patent: 5779098 (1998-07-01), Fancher
Derakshani Philippe
Grand Soft Equipment Co.
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