[특허]Electromagnetic linear drive

Electromagnetic linear drive 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04R-025/00
출원번호	US-0629787 (1996-04-09)
발명자 / 주소	Grumazescu Mihai
출원인 / 주소	Lavrov Victor
인용정보	피인용 횟수 : 46 인용 특허 : 0

초록 ▼

An electromagnetic linear drive has a stationary unit, a mobile unit centered and coaxially placed with respect to the stationary unit and an enclosing assembly made of diamagnetic material to support and protect the stationary unit and the mobile unit. The stationary unit contains a coil, wound around a bobbin made of non-conductive and diamagnetic material including a stationary magnet coaxially attached to the lateral face of the bobbin. The mobile unit includes a mobile magnet fastened to a shaft made of diamagnetic material which holds, positions and further transfer the linear motion of the mobile magnet to the driven device. Two stationary units are used to obtain controlled movement in both direction. The permanent magnets are magnetized in the direction of their thickness, coaxially positioned and arranged to repulse each other. The coils are connected in series with the magnetic fields opposed. The mobile unit is moved by synergetic attraction and repulsive forces of a bi-directional rectangular electric current, generated by a bridge type circuit through the coils of the stationary units. This invention has higher output force and operating frequency created by eliminating ferromagnetic materials. This linear drive directly converts electric energy to linear motion. It can be used where precise movement is required or in applications such as pumps, robotics, loudspeakers and underwater communications.

대표청구항 ▼

[ What is claimed is:] [1.] An electromagnetic drive comprising:a stationary unit having a coil means and a stationary magnet means, the magnet means being coaxially attached to a lateral face of said coil means; a mobile unit centered and coaxially placed with respect to said stationary unit, the mobile unit having a mobile magnet means fastened to a linear motion executing means so as to hold and linearly guide the mobile magnet means and further to transfer the linear motion of said mobile unit; an enclosing assembly engaged with the stationary unit and said mobile unit for support and protection thereof;said enclosing assembly comprises a main housing including an end cover at each end thereof in support of said stationary unit, and wherein the linear motion executing means is a shaft said shaft being supported in sliding motion by the main housing and further providing support for a spring engaged for urging said mobile magnet toward said stationary magnet means.

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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

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Electromagnetic linear drive 원문보기

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Electromagnetic linear drive 원문보기

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이 특허를 인용한 특허 (46)

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