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:
Jan. 15, 1991
Filed:
Nov. 07, 1989
Hyun J Cho, Tulsa, OK (US);
William J Rankin, Sapulpa, OK (US);
TDW Delaware, Inc., , US;
Abstract
An elastomeric disc for use on a pipeline pig of the type having a longitudinal body supported centrally within a pipeline for movement by fluid flow therethrough, the disc being in the form of a unitary elastomeric member having an outer peripheral surface concentric with the pipeline pig body longitudinal axis and having an inner portion of selected thickness with means for attachment to the pipeline pig body whereby the disc is supported in a plane perpendicular the pipeline line axis, the disc member having an integrally formed circumferential outer portion, the outer portion being of increased thickness in relation to the spacing thereof from the disc center, the outer peripheral surface being defined by first and second intersecting frustraconical surfaces, one of the surfaces being parallel to the inner wall of the pipeline through which the disc is moved in a first direction and the other of the surfaces being parallel to the inner wall of the pipeline when the disc is moved in a second direction.