Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1996-02-08
1997-10-14
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
744248R, 108 20, 108143, F16H 2520
Patent
active
056760167
ABSTRACT:
An electric actuator has a body with a hole defined therein and an electric motor fixed to an end of the body. The electric motor has a rotatable shaft to which a feed screw is coaxially connected, and a feed nut is threaded over the feed screw. The hole receives an elongate cylindrical tubular member slidably fitted therein which surrounds the feed screw. The feed nut is secured to an end of the tubular member, and a support for feeding a workpiece supported thereon is fixed to the other end of the tubular member. The feed screw, which serves as a drive force transmitting shaft, is protected by the surrounding tubular member from the deposition thereon of dust, dirt, or other foreign matter and hence from unwanted shutdown or breakage.
REFERENCES:
patent: 2688951 (1954-09-01), Sears
patent: 3727472 (1973-04-01), Maekawa
patent: 4201935 (1980-05-01), Fukuma et al.
patent: 4288182 (1981-09-01), Vandenkieboom et al.
patent: 4371360 (1983-02-01), Ojima et al.
patent: 4403389 (1983-09-01), Coope
patent: 5542744 (1996-08-01), Bathrick
Hasegawa Masahisa
Kawamoto Tadasu
Nagai Shigekazu
Saitoh Akio
Sugiyama Toru
Herrmann Allan D.
SMC Kabushiki Kaisha
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