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:
Jun. 28, 1977
Filed:
Sep. 09, 1975
Applicant:
Inventor:
Edward Albert Clavin, Houston, TX (US);
Assignee:
Midcon Pipeline Equipment Co., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
1510417 ; 1510418 ;
Abstract
Apparatus for scraping the interior sides of the walls of pipes, having retractable scraper elements at each end of a carrier body or at only one end thereof. The scraper apparatus is preferably moved in both directions through a pipe, the trailing scraper elements preferably being retracted during movement of the apparatus in each direction. The apparatus is particularly designed for removal of coating materials such as cosmoline from pipes before use of the pipes in pipelines.