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:
Dec. 23, 1997
Filed:
Jan. 29, 1996
Joseph F Kolcun, Binghamton, NY (US);
Stanley W Janisiewicz, Endwell, NY (US);
Koenraad A Gieskes, Binghamton, NY (US);
Universal Instruments Corporation, Binghamton, NY (US);
Abstract
A dispenser includes a viscous fluid feed cavity and dispense cavity with an intermediate passageway therebetween and a diaphragm mounted for reciprocatory movement so positioned that during the dispensing process, the movable diaphragm is moved between a first position wherein the passageway is opened, a second position to close the passageway, and a third position to affect viscous fluid dispensing through an outlet coupled to the dispensing cavity. A diaphragm position sensor is provided for determining the relative position of the movable portion of the diaphragm, the sensor being functionally coupled to the diaphragm actuator, such that the diaphragm actuator is controllable in accordance with the relative position of the diaphragm to insure accurate control of micro quantities of viscous fluid dispensed from the dispenser.