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:
Feb. 19, 2002
Filed:
Jan. 20, 2000
Applicant:
Inventors:
Robert F. McLoughlin, Pelham, NH (US);
George L. Gonnella, Pepperell, MA (US);
Timothy J. King, Sudbury, MA (US);
Assignee:
Mykrolis Corporation, Bedford, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B 9/03 ; B05B 1/208 ; B05C 1/100 ; B05D 7/00 ; F16K 3/112 ;
U.S. Cl.
CPC ...
B05B 9/03 ; B05B 1/208 ; B05C 1/100 ; B05D 7/00 ; F16K 3/112 ;
Abstract
A control system for digitally monitoring and/or controlling pressure to a pneumatic load such as a stop/suckback valve. Pressure is sensed in the pneumatic fluid input lines to the pneumatic load, and a closed loop control is used to maintain the pressure at a predetermined level. In an alternative embodiment, the control system is used to ensure equal dispensing in multi-point dispense apparatus. Thus, pressure is sensed downstream of each valve in fluid communication with a respective nozzle. Any pressure differential detected is corrected by appropriate valve adjustment.