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. 07, 1982
Filed:
Nov. 17, 1980
John E Ortloff, Houston, TX (US);
W Robert Wolfram, Jr, Houston, TX (US);
Exxon Production Research Co., Houston, TX (US);
Abstract
A limited angle piggable swivel comprising a stationary cylindrical shaft and a rotatable housing member circumferentially mounted around the shaft in sealing engagement. The shaft has a conduit extending from the base to the side. The housing member has a passageway extending therethrough. The rotatable housing member is mounted on the shaft to permit coaxial alignment of the inner end of the housing passageway with the side end of the shaft conduit when the housing member is rotated around the shaft to the proper position. In a preferred embodiment of the present invention, both the inner end of the passageway and the side end of the conduit are flared outwardly to enable the swivel to be pigged in either direction when the longitudinal axis of the passageway is offset from the longitudinal axis of the side end of the conduit.