Joseph B Richard

US Patent:

45382492, Aug 27, 1985

Filed:

Sep 29, 1982

Appl. No.:

6/428474

Inventors:

Joseph D. Richard - Pensacola FL

International Classification:

A01K 9712
G08B 2100

US Classification:

367 94

Abstract:

A directional Doppler fish movement detector uses a relatively low ultrasonic frequency to minimize particulate scattering and absorption losses in turbid lakes and streams. The low ultrasonic frequency also minimizes Doppler noise caused by boat drift and wave action. To compensate for the relatively low frequency Doppler signals which result, including sub-sonic Doppler signals from slow moving fish, means are provided for doubling, or otherwise multiplying, the frequency of the Doppler signal to improve audibility. Means are also included which allow the relatively wide beam of the Doppler fish movement detector to be directed over a wide horizontal angle, and in one of the preferred configurations, the transducer assembly is attachable to the underwater portion of an electric propulsion motor so that the ultrasonic beam is directed along the line of thrust. Although useful for the detection of normally swimming fish, a preferred use is in cooperation with a fishing effort in which otherwise inactive fish are provoked into impulsive and detectable movements by bait casting into the area covered by the relatively wide ultrasonic beam.

US Patent:

47151420, Dec 29, 1987

Filed:

May 7, 1987

Appl. No.:

7/046702

Inventors:

Joseph D. Richard - Pensacola FL

International Classification:

A01K 9702

US Classification:

43 4316

Abstract:

A self-destructing fish hook having a selected small anodic area of exposed steel, and a highly cathodic plating covering a much larger area of the hook surface. When immersed in seawater, the resulting galvanic couple causes the small anodic area to corrode rapidly and the hook to eventually break. In a preferred embodiment, a temporary protective coating is provided for at least one member of the couple to delay the onset of corrosion of the steel anodic area so that the hook can retain 100 percent of its strength for a substantial period of usage in seawater before corrosion of the steel body is initiated.