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:
Jul. 23, 1991
Filed:
Apr. 17, 1990
Gerald P McCann, Los Angeles, CA (US);
Donald Verley, Lake Elizabeth, CA (US);
McCann's Engineering and Manufacturing Co., Los Angeles, CA (US);
Abstract
A liquid dispensing system including an air evacuating apparatus is disclosed. The liquid dispensing system includes a dispensing mechanism and an air evacuating apparatus. The air evacuating apparatus includes a primary pump, a reservoir, an inlet in the reservoir operative to introduce liquid into the reservoir, an outlet in the reservoir operative to transport liquid from the reservoir to the primary pump, a level sensor operative to ascertain the level of liquid in the reservoir, an auxiliary pump, and a controller responsive to output from the level sensor to selectively control operation of the auxiliary pump to remove gas from the reservoir. The primary pump is operative to transport a dispensable liquid from a storage container to the dispensing mechanism.