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:
Oct. 09, 1979
Filed:
Mar. 03, 1978
Frank P Haley, Upland, CA (US);
FMC Corporation, San Jose, CA (US);
Abstract
A digital valve has a valve body with an inlet passage and two outlet passages straddling the inlet passage. A plurality of slots are cut in the body connecting the inlet passage to each outlet passage. Bores in the valve body intersect each slot, and a plunger in each bore blocks or opens the slot. The slots vary in width in a binary progression, and solenoids, controlled by a central processing unit through solid state relays, selectively actuate the plungers so that a desired flow through the valve can be effected. Upstream and downstream sensors are connected to the central processing unit, which is within the valve, to modify the actuation of the plungers in order to provide a predetermined flow at the instantaneous temperature of the fluid and the instantaneous pressure drop across the valve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile