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:
Dec. 15, 1992
Filed:
Feb. 01, 1990
Kenneth Koenig, East Syracuse, NY (US);
Wayne R Reedy, Edwardsville, IL (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A refrigerant flow metering device for use in a refrigeration system includes a body having a flow passage extending therethrough. A piston having a flow metering port extending therethrough is movably disposed within the flow passage. An elongated member extends into the metering port of the piston and cooperates with the port to define a flow metering passage therebetween. The elongated member is configured such that it will vary the cross-sectional area of the flow metering passage a function of the position of the member to the metering port. Means are provided for supporting the elongated member within the housing and for controlling the relative axial position of the elongated member and the piston with respect to one another as a function of the differential pressure across the piston. The refrigerant expansion device is capable of responding to certain pressure and flow conditions within a refrigeration system to provide optimum expansion areas within the device for such pressure and flow conditions.