Aquatic vessel hull

a technology for aquatic vessels and hulls, applied in the field of aquatic vessel hulls, can solve the problems of individual at risk of being attacked, small aquatic vessels such as surfboards, kayaks, rafts, can be disturbed by sharks, etc., and achieve the effect of maximising the efficiency of electromagnetic field distribution

Inactive Publication Date: 2006-01-26
SEACHANGE TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] Preferably, the recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.
[0017] Preferably, the recesses are formed so as to allow maximum efficiency of distribution of the electromagnetic field generated by said electrodes when in use.

Problems solved by technology

Not only are individuals at risk from being attacked by sharks, sometimes small aquatic vessels such as surfboards, kayaks, rafts and small boats can be disturbed by sharks.

Method used

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  • Aquatic vessel hull
  • Aquatic vessel hull
  • Aquatic vessel hull

Examples

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Embodiment Construction

[0026] It will be understood that the phrase “aquatic vessel” refers to any suitable vessel including surfboard, surf rescue board, kayak, sailboat, rowboat, ship and water skis to be worn on the feet of a user.

[0027] A typical aquatic vessel hull 10 is shown in side elevation in FIG. 1. Provided in hull 10 is channel 11 for accommodating a cord (not shown) having electrodes at either end of the cord. The type of electrode cord that will be suitable for this application is the subject of a co-pending PCT Patent Application No PCT / AU02 / 01297, the contents of which are hereby incorporated by reference. It will be appreciated however, that any other suitable electrode arrangement may be used.

[0028] Hollowed recesses 12 and 13 accommodate the electrodes (not shown) of the electrode cord which in use, is slid through channel 11 until both electrodes are in place in respective recesses 12 and 13 and then secured in place by any appropriate means.

[0029]FIGS. 2 and 3 show these features ...

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Abstract

A hull (10) for an aquatic vessel which provides a shark-repelling region about the vessel. The hull (10) includes two electrodes connected to an electromagnetic field signal generator, which in use, generates an electromagnetic field (40) about the vessel which repels sharks. The electrodes may be formed from the ends of an electrode cord (23), or may be formed from conductive (24, 25) plates (20, 21) mounted to, or integral with, the hull (10).

Description

TECHNICAL FIELD [0001] This invention relates to devices and applications of generating electromagnetic fields within a body of water to repel aquatic creatures such as sharks. BACKGROUND TO THE INVENTION [0002] Numerous devices are known for the purpose of repelling aquatic creatures. The majority of these devices are designed to generate an electromagnetic field in close proximity of a diver or to form a barrier or boundary in the nearby water. [0003] Most studies are conducted on the aquatic creature sub-group of elasmobranchii, otherwise known as sharks. Most shark repelling apparatus use electromagnetic pulses, delivered into the water by submerged antennae or electrodes, to create an appropriate electromagnetic field in the vicinity of a swimmer, diver or general water recreationist. [0004] Various types of pulse signal generators are used, the characteristics of which include a specification of signal duration, repetition rate, amplitude and pulse rise time. The value or rang...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63B9/00B63B35/73A01K79/02H04B1/02H04B1/03H05C1/04
CPCA01K79/02
Inventor WESCOMBE-DOWN, MICHAEL
Owner SEACHANGE TECH HLDG
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