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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0687688 (1976-05-19) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 29 인용 특허 : 0 |
This disclosure pertains to a walking cane, for use by the blind, having a portion of the shank thereof adapted with a solar cell. The current produced by the cell recharges a battery stored within the hollow interior portions of the cane. A lamp is selectively energized by operating a control switc
A walking cane comprising a rechargeable battery, light responsive means for electrically charging said rechargeable battery upon being exposed to light rays, a lamp, audible signalling means for electrically signalling the user that said rechargeable battery is in a charged condition and said lamp
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