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:
Sep. 01, 2020
Filed:
Apr. 05, 2019
Massachusetts Institute of Technology, Cambridge, MA (US);
Jain Irrigation Systems Ltd, Jalgaon, IN;
Ruo-Qian Wang, Berkeley, CA (US);
Amos G. Winter, Somerville, MA (US);
Abhijit Bhaskar Joshi, Jalgaon, IN;
Pawel Jerzy Zimoch, Cambridge, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Jain Irrigation Systems Ltd, Jalgaon, IN;
Abstract
A passive, self-regulating valve includes a static pressure chamber and an elastically collapsible tube supported within the static pressure chamber. The elastically collapsible tube is defined by a geometry that determines an activation pressure of the valve. The passive, self-regulating valve also includes a flow restrictor in fluid communication with the elastically collapsible tube inside the static pressure chamber, as well as piping connecting a source of pressurized liquid both to the flow restrictor and to an opening into the static pressure chamber. The piping enables the flow restrictor to control flow rate of the pressurized liquid through the valve independent of the activation pressure of the valve. In a preferred embodiment, the flow restrictor is a needle valve.