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:
May. 30, 1995
Filed:
Feb. 16, 1994
Viraraghavan S Kumar, Palm Bay, FL (US);
Teknocraft, Inc., Melbourne, FL (US);
Abstract
A micro-valve assembly for providing precise regulation of fluid flow between an input port and an output port comprises a valve body configured to installed with the valve assembly and forming therewith a fluid flow chamber between the fluid flow rate control port and the output port, the valve body having an internally threaded cylindrical portion. A rotatable valve adjustment member has an externally threaded cylindrical portion sized to engage the internally threaded cylindrical portion of the valve body. The externally threaded cylindrical portion of the rotatable valve adjustment member has an internally threaded axial bore. The internally threaded bore of the rotatable valve adjustment member has a longitudinal axis and a pitch finer than that of the externally threaded cylindrical portion thereof. A valve stem has an externally threaded shaft portion, sized to engage and being threaded into the internally threaded axial bore of the cylindrical portion of the rotatable valve adjustment member, and a poppet member disposed at one end of the externally threaded shaft. The poppet member is sized to close the fluid flow rate control port of the valve assembly when brought into engagement with the seat. The valve stem is axially translatable within the internally threaded axial bore of the cylindrical portion of the rotatable valve adjustment member by the rotation of the rotatable valve adjustment member about the longitudinal axis, thereby controlling the position of the poppet member relative to the seat of the fluid rate control port.