Anchor alarm for boats and the like
OwnerDonald H. Bachmaninventor
Life of this patent
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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.
Claims8
An alarm system for indicating movement of a boat's anchor in the water after deployment thereof comprising:
- (a) a motion sensor connected to said anchor and producing a motion signal upon movement of said anchor;
- (b) a sonar transmitter associated with said anchor;
- (c) means responsive to said motion signal for actuating said sonar transmitter and generating an acoustic wave which propagates through the water;
- (d) a sonar transducer mounted on the anchored boat suspended in the water for receiving said acoustic wave and for producing an output signal in response thereto;
- (e) an alarm means;
- (f) a radio frequency transmitter on the anchored boat actuated in response to said output signal for generating an electromagnetic radio wave in the atmosphere;
- and
- (g) a radio frequency receiver responsive to receipt of said electromagnetic radio wave for actuating said alarm means.
An alarm system for indicating movement of a boat's anchor in the water after deployment thereof comprising:
- (a) a motion sensor connected to said anchor and producing a motion signal upon movement of said anchor;
- (b) a sonar transmitter associated with said anchor and comprising:
- (i) a pulse generator actuated in response to said motion signal for producing a series of electrical pulses;
- and
- (ii) an acoustic transducer responsive to said series of electrical pulses for generating an acoustic wave which propagates through the water;
- (c) a sonar receiver mounted on the anchored boat suspended in the water for receiving said acoustic wave and for producing an output signal in response thereto;
- and
- (d) an alarm means actuateable in response to said output signal.
Dependencies are inferred from the claim text.