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:
Aug. 10, 1999
Filed:
Aug. 26, 1997
Applicant:
Inventors:
Keith D Dyer, Fountain Valley, CA (US);
George R Hoppe, Covina, CA (US);
Assignee:
Vacco Industries, South El Monte, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210 85 ; 137808 ; 137833 ; 210486 ; 210488 ; 96393 ; 96417 ;
Abstract
A flow control device (FCD) controls low flow rate fluid flow to within closely tolerated and consistently maintained limits by way of improved stacked disc technology. Stacking face to face of similar disc configurations generates novel enhanced etched disc stacks allowing course and fine flow adjustments, maintenance of cleanliness, resistance to flow degradation, improved structural strength and the ability to make real time flow adjustments during mission life. A stainless/copper sandwiched embodiment seals face to face leakage faster than known means for controlling etched disc face to face seal designs.