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. 13, 1982
Filed:
Nov. 20, 1980
Applicant:
Inventors:
John J Bednarz, Elmhurst, IL (US);
Phillip J Moser, Bensenville, IL (US);
Roger L Rosenberg, Arlington Heights, IL (US);
Assignee:
Circom, Inc., Bensenville, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G01S / ; A01K / ;
U.S. Cl.
CPC ...
367 96 ; 43 261 ; 43 274 ; 367106 ; 367108 ;
Abstract
An automatic trolling depth controller is disclosed for a fishing boat employing a downrigger system. A sonar depth indicating unit with a sonar transducer continuously measures changing depth as the boat trolls. A depth control unit is connected thereto which automatically raises and lowers the trolling line via a reversible motor in response to depth indicating signals of the depth indicator unit so as to automatically maintain the end of the trolling line at a substantially constant given spacing from the bottom despite variations in lake depth as the fishing boat trolls.