[특허]Self-powered anti-fouling device for watercraft

Self-powered anti-fouling device for watercraft 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-041/09 H01L-041/113
출원번호	US-0511762 (1995-08-07)
발명자 / 주소	Taylor George W. (Mercer County NJ)
출원인 / 주소	Ocean Power Technologies, Inc. (West Trenton NJ 02)
인용정보	피인용 횟수 : 47 인용 특허 : 0

초록 ▼

An anti-fouling device comprises a layer of piezoelectric material, preferably a poled plastic material such as a PVDF polymer, for mounting on the hull of a watercraft. The layer has electrodes on opposite major surfaces thereof, and the layers are connected to a power supply comprising a battery and a d.c. to a.c. converter. The converter generates an a.c. voltage at a frequency, e.g., 20 KHz, for causing vibrations of the layer, such vibrations serving to retard the growth of water dwelling organisms in the craft. The layer electrodes are also connected to an a.c. to d.c. converter for converting a.c. energy to d.c. energy suitable for trickle charging the power supply battery. Accordingly, during transit of the craft through the water, water induced hull vibrations cause vibrations of the layer for generating a.c. energy for storage in the battery, which stored energy is used for causing anti-fouling vibrations of the energy generating layer.

대표청구항 ▼

A system including an electroded layer of piezoelectric material mounted in a position to be stressed and strained and to then produce an alternating current (a.c.) voltage, said piezoelectric material being coupled to voltage rectifying means for converting the a.c. energy produced by the piezoelectric material when stressed and strained into direct current (d.c.) energy for charging a battery; and a direct current to alternating current converter means coupled between the battery and the said piezoelectric material for converting the direct current energy stored in the battery into an alternating current signal having a preselected frequency and applying the a.c. signal to the piezoelectric material for causing the piezoelectric material to vibrate at a rate proportional to said preselected frequency.

이 특허를 인용한 특허 (47)

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William H. McKnight ; Wayne C. McGinnis, Energy-harvesting device using electrostrictive polymers.
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Phillips, Reed E., Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof.
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Phillips, Reed E., Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof.
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Phillips, Reed E., Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof.
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Phillips, Reed E., Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof.
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Phillips, Reed E., Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof.
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Phillips, Reed E., Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof.
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Tabata, Kunio; Hirabayashi, Atsuya; Oshima, Atsushi; Yoshino, Hiroyuki; Ide, Noritaka, Power generation unit, electronic apparatus, transportation device, and method of controlling power generation unit.
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Frederick Max B. ; Frederick Brian, Substantially environmental-pollution-free cleaning method and device employing electric energy and surface physical properties.
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Staerzl, Richard E., System for inhibiting fouling of an underwater surface.
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Staerzl,Richard E.; Misorski,Christopher J.; Anderson,Kevin R., System for inhibiting fouling of an underwater surface.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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연합인증

Self-powered anti-fouling device for watercraft 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (47)

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연합인증

Self-powered anti-fouling device for watercraft 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (47)

관련 콘텐츠

특허 원문 보기

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