Anchor alarm for boats and the like

Details Anchor alarm for boats and the like Anchor alarm for boats and the like

1989-02-17

1990-03-27

Jordan, Charles T.

Communications: electrical

Underwater

181140, 367141, 340986, 114293, H04B 1302

Patent

active

049124641

ABSTRACT:
A motion detector is physically attached to a boat's anchor. Upon abnormal motion or movement of the anchor, indicative of a dragging anchor, a pulse generator is initiated by the motion detector to actuate a transmitting transducer and generate an acoustic or sonar wave in the water. The acoustic wave is sensed by a receiving transducer on the boat, and a warning alarm is produced. In a preferred embodiment, the receiving transducer actuates an RF transmitter which generates a radio wave, and an RF receiver which is tuned to receive the radio wave actuates the alarm.

REFERENCES:
patent: 3428942 (1969-02-01), Isaacson
patent: 4324135 (1982-04-01), Peyton
patent: 4651139 (1987-03-01), Oettli

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