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:
Aug. 05, 1997
Filed:
Mar. 11, 1996
Mervyn Johnston, Salisbury, MD (US);
Dresser Industries, Dallas, TX (US);
Abstract
A flow control limiter for limiting the volumetric flow rate of a fluid flowing through a line. A stator is matingly seated in the line, and includes a sleeve portion and a curved portion extending outwardly and upstream from the sleeve portion. The stator further includes a centrally disposed neck portion connected to the sleeve portion. A shuttle is slidably fitted onto the neck portion such that an annular space is formed between the shuttle and the curved portion of the stator for the flow of fluid therethrough, the shuttle being slidable between an upstream position and a downstream position. A spring is disposed between the stator and the shuttle to bias the shuttle toward the upstream position. The surface of the curved portion of the stator is configured so that when fluid flow causes the shuttle to move downstream at a constant rate against the bias of the spring, the size of the annular space decreases at a decreasing rate to maintain a substantially constant maximum volumetric flow rate of fluid through the line.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile