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:
Sep. 16, 1986
Filed:
Jul. 01, 1983
Ronald G Weber, Tulsa, OK (US);
Lowrance Electronics, Inc., Tulsa, OK (US);
Abstract
A sonar system for indicating the presence of sonic energy reflecting interfaces in the water in the path of a downgoing sonic pulse. The received reflection or echo is recorded on a moving record or web by means of a stylus that is traversed across the web as a linear function of time. The movement of the stylus triggers the transmitted pulse and the received signal is then amplified and controls a high voltage source which generates a series of pulses applied by the stylus as it moves across the record. Under certain operating conditions there is considerable noise generated in the water by the sonic pulse due to the presence of many reflecting surfaces from sediment, algae, plankton, etc. which sustains the return signal to the transducer. A disable system is provided which on command of the operator will disable the operation of the transmitter and receiver on alternate operating cycles to provide time for this noise to attenuate.