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:
Feb. 23, 1988
Filed:
Oct. 23, 1986
Applicant:
Inventor:
Kenneth M Knapp, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
15104061 ;
Abstract
A pipeline pig is disclosed, the preferred embodiment incorporating all plastic components including a central elongate mandrel being hollow along the middle to a forward transverse partition, a nut which threads to the forward end of said mandrel, said nut and mandrel locking together to secure components on said mandrel. The device further supports N cups, the cups preferably backed by adjacent discs for stiffening purposes and being spaced along the mandrel by spacer means. Scrapper discs can be used with the leading disc being harder & smaller while scrapping discs are softer and larger.