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:
Mar. 06, 2012
Filed:
Apr. 26, 2007
Applicants:
Frank Conrad, Hornbach, DE;
Jürgen Appel, Contwig, DE;
Inventors:
Frank Conrad, Hornbach, DE;
Jürgen Appel, Contwig, DE;
Assignee:
Terex-Demag GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66C 23/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A telescopic crane boom including a plurality of telescopically assembled tubular box sections including a base box section and an innermost box section having an open cross-section, and a boom head with a frame fixed to the outside circumference of the innermost box section. The head has a plurality of deflecting pulleys mounted on the frame, but no part extending inside the open cross section on the innermost base box section, whereby at least one additional box section can be inserted into the innermost box section in order to extend the boom.