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. 09, 1982
Filed:
Jan. 23, 1980
Applicant:
Inventors:
Jon M Promersberger, Mankato, MN (US);
Richard W Steinberg, Mankato, MN (US);
Assignee:
Vibra-King, Inc., Mankato, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ;
U.S. Cl.
CPC ...
405177 ; 405178 ;
Abstract
A buried cable laying apparatus to lay a cable in an open trench in the ground in a relaxed or tension-free state. The apparatus progressively forms a trench and then buries detensioning line and a cable in the trench. The detensioning line is in tension and the cable is in a relaxed state. The detensioning line and the cable are both unreeled from drums moving at the same rotational speed. The drum of the detensioning line is of a smaller diameter than the drum of the cable whereby the detensioning line drum will feed more cable than is required but slip relative to the cable until the cable gets tight.