The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2000
Filed:
Nov. 16, 1998
Hershel Edward Fancher, New Albany, IN (US);
Grand Soft Equipment Co., Louisville, KY (US);
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile