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:
Sep. 21, 1993
Filed:
Jul. 13, 1992
Joseph Gross, Moshav Mazor, IL;
Sil Medics Ltd., Petah Tikva, IL;
Abstract
A liquid material dispenser includes a housing formed with a reservoir for the liquid to be dispensed, an outlet through which the liquid is to be dispensed, and a connecting passageway between the reservoir and the outlet. A diaphgram is located in a cavity in the passageway such that one side of the diaphragm defines a pumping chamber, and the other side defines a control chamber. An electrolytic cell generates a gas to the control chamber according to the quantity of electrical current passed through the electrolyte, for driving the diaphragm through forward strokes to pump liquid to the outlet; and a slow-acting vent vents the gas from the control chamber to the atmosphere at a rate lower than that of generation of gas by the electrolytic cell, for driving the diaphragm through return strokes to refill the pumping chamber.