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:
Sep. 29, 1981
Filed:
Jan. 07, 1980
Davy G Pampell, Houston, TX (US);
Baker International Corporation, Orange, CA (US);
Abstract
A well casing scraping apparatus includes a generally cylindrical mandrel connected to a power driven rotatable work string or conduit. At least one peripheral ramp surface is formed on the mandrel and an annular scraping means is formed by the assembly of a plurality of externally toothed arcuate segments around the ramp surface portion of the tool support, with each segment having an internal arcuate ramp surface conforming to the adjacent portion of the mandrel ramp surface. Retaining sleeves are provided for the tool segments which not only retain the segments against radial outward movement but confine the segments axially to engagement with a particular portion of the ramp surfaces, whereby the effective working diameter of the segmented scraping means may be effectively controlled by changing the axial position of the retaining sleeves.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile