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:
Apr. 16, 1985
Filed:
Mar. 28, 1983
William Parsons, Jr, Boothwyn, PA (US);
Garlock, Inc., Longview, TX (US);
Abstract
An improved glandless plug valve of the type in which a tapered plug fits into a tapered bore in a valve body is provided wherein the tapers formed on the plug and in the body coact to form a body seal. A stem seal is also provided. The stem seal comprises a ring-like sealing member confined within mating grooves in the top of the plug and in a floating seal member. The floating seal member is biased downwardly to effect the seal between itself and the ring-like seal member. The bias force is transmitted to the plug valve urging it into engagement with the body of the valve, to provide a good body seal. In a preferred embodiment, the valve and plug are lined such that the valve is suitable for use in connection with corrosive liquids or slurries. The floating seal provides automatic compensation for temperature induced dimensional changes and for wear.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile