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:
Jun. 23, 1998
Filed:
Jan. 25, 1996
Christopher R Mayer, Wilmington, MA (US);
Ametek Aerospace Products Inc., Wilmington, MA (US);
Abstract
A system and method for controlling fluid mass-flowrate are provided. One embodiment of the method of the present invention essentially comprises generating in response to a requested mass-fluid flowrate a torque for controlling a torque-controlled valve to provide a flow of fluid from a supply to a remote space. Angular momentum is imparted to the fluid flow related to the actual mass-flowrate of the fluid flow. The angular momentum of the fluid flow generates a feedback torque therewith for counter-acting the controlling torque. The feedback torque is summed with the controlling torque to reduce the controlling torque as a function of the feedback torque whereby to form a hydromechanical closed-loop mass-flowrate servo-valve.