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. 14, 1984
Filed:
Oct. 08, 1981
Slawomir Kowalski, Rockaway, NJ (US);
Marotta Scientific Controls, Inc., Boonton, NJ (US);
Abstract
The invention contemplates a system of relatively wide-range solenoid control of pressure-fluid flow from a high-pressure upstream source to a downstream load. In a first range of relatively low rates of flow, the system utilizes the solenoid to actuate a pilot valve for controlled exclusive delivery of pressure fluid to the load, via a throttling orifice; in a second range of higher rates of flow, the pressure drop across the throttling orifice becomes sufficiently great to enable pilot-delivery pressure, upstream from the throttling orifice, to open a main-valve line from the source to the load. The arrangement is such that solenoid-actuating force variation within the first range produces a first characteristic of flow-rate delivery to the load, and is also such that solenoid-actuating force variation beyond the first range produces a second and steeper characteristic of flow-rate delivery to the load.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile