[특허]Bi-directional clutch

Bi-directional clutch 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16D-067/00 B60T-007/12
출원번호	US-0244975 (1981-03-18)
발명자 / 주소	Waine Martin (Riverside CT) Nisenson Jules (Stamford CT)
출원인 / 주소	General Clutch Corp. (New York NY 02)
인용정보	피인용 횟수 : 91 인용 특허 : 0

초록 ▼

There is disclosed a bi-directional clutch, particularly useful in window shade applications. The bi-directional clutch includes a first or core member and an unwrap spring, that is, a spring having an inside diameter somewhat smaller than the diameter of the core, the spring being wound around the core. The unwrap spring has a number of helical turns and spring tangs which extend outwardly past the circumference of the spring and generally perpendicular to the axis of the spring. The spring is controlled by a second, control or driving member which, when rotated, applies force to one or the other of the spring tangs to unwrap or loosen the spring, thereby allowing the spring to rotate relative to the core. As the spring rotates, one of the spring tangs abuts a third or driven member. The third or driven member is rotated by the spring, allowing the third member to rotate relative to the first or core member. The third or driven member continues to rotate, relative to the first or core member, until the second, control or driving member stops rotating. However, when the driven member is rotated directly, the spring is locked onto the core member and further rotation of the driven member is prevented.

대표청구항 ▼

A bi-directional clutch comprising a core member having a cylindrical surface; an unwrap spring having helical turns, said helical turns being located about the cylindrical surface of the core member and normally gripping the cylindrical surface of the core member to prevent rotation of the spring relative to the core member; said unwrap spring further including a first spring tang and a second spring tang, said spring tangs extending outwardly past the circumference of the helical turns and being responsive to a force applied to the first spring tang in a first direction to cause the helical turns to tighten about the core member and to a force applied to the frst spring tang in a second direction to cause the helical turns to loosen about the core member enabling the spring to rotate relative to the core member, and being further responsive to a force applied to the second spring tang in said first direction to cause the helical turns to loosen about the core member enabling the spring to rotate relative to the core member and to a force applied to the second spring tang in said second direction to cause the helical turns to tighten about the core member; a driving member disposed for rotation about the core member, said driving member having two tang-receiving surfaces, one of said tang-receiving surfaces being located such that rotation of the driving member relative to the core member in said second direction causes said one tang-receiving surface to apply a force to said first spring tang in said second direction to loosen said helical turns, the other of said tang-receiving surfaces being located such that rotation of the driving member relative to the core member in said first direction causes said other tang-receiving surface to apply a force to said second spring tang in said first direction to loosen the helical turns; and a driven member disposed for rotation with said spring, said driven member having two tang-abutting surfaces, one of said tang-abutting surfaces being located such that direct rotation of the driven member in said first direction causes the tang-abutting surface to apply a force to the first tang in said first direction to tighten the helical turns and prevent further rotation of the driven member and spring relative to the core member, the other of said tang-abutting surfaces being located such that direct rotation of the driven member in said second direction causes the tang-abutting surface to apply a force to the second tang in said second direction to tighten the helical turns and prevent further rotation of the driven member and spring relative to the core member, said tang-abutting surfaces being further operative to transfer driving member-controlled rotation of the spring relative to the core member to the driven member.

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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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연합인증

Bi-directional clutch 원문보기

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Bi-directional clutch 원문보기

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