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:
Jul. 16, 1991
Filed:
Aug. 29, 1989
Applicant:
Inventors:
Richard W Krajicek, Houston, TX (US);
Robert R Cradeur, Sulphur, LA (US);
Assignee:
Serv-Tech, Inc., Lake Charles, LA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66F / ;
U.S. Cl.
CPC ...
4147453 ; 297265 ; 294 8641 ; 414661 ;
Abstract
An aerial tube bundle puller for extracting a tube bundle from a heat exchanger is provided, comprising a cradle supporting a carriage frame and a power source, a sled, attachable to a tube bundle, with a hydraulic powered screw drive to propel the sled on the carriage frame, a hydraulic elevator slidable on the carriage frame for adjusting and supporting the tube bundle and an extension for adjusting the length of the carriage frame.