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:
Apr. 02, 2002
Filed:
Feb. 22, 2000
Applicant:
Inventor:
Franz-Josef Puttmann, Lennestadt, DE;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
E21B 1/914 ;
U.S. Cl.
CPC ...
E21B 1/914 ;
Abstract
The invention pertains to a method for introducing and removing rod sections into and from the push/pull axis of a push/pull unit, the individual rod sections being essentially arranged one after another and being joined to one another or detached from one another by being rotated in or out about an axis located essentially perpendicular to the axis of the rod section.