Linear actuator

Details Linear actuator Linear actuator

1987-05-05

1989-05-09

Staab, Lawrence

Machine element or mechanism

Gearing

Directly cooperating gears

74 8915, 74409, 74441, F16H 118, F16H 120

Patent

active

048277894

ABSTRACT:
A linear actuator includes a single drive gear that engages two driven gears of the same pitch diameter, which in turn drive a spindle and a sleeve, respectively. The sleeve is internally threaded to receive the spindle, which is externally threaded. The sleeve and spindle are driven rotationally at slightly different rates due to different numbers of teeth on the two driven gears, producing linear motion of the spindle relative to the sleeve. The drive gear can be rotated in increments corresponding to integral numbers of teeth and the rest positions of the gears can be full engagement positions to minimize play in the gears.

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Mechanical Movements Item 260 Henry T. Brown 1893.
Product Engineering "20 Dynamic Applications for Screw Threads" p. 43-46 Kurt Rabe Feb. 29, 1960.
"Gearing" G. W. Michalec Marks, Standard Handbook for Mechanical Engineers pp. 8-98 to 8-104 1978.
507 Mechanical Movements, Published By Brown & Seward, New York, 1893, pp. 64-65, Item #260.
Product Engineering, "20 Dynamic Applications For Screw Threads" pp. 43-46, Kurt Rabe, Feb. 29, 1960.
"Gearing", G. W. Michalee, Marks Standard Handbook For Mechanical Engineers, pp. 8-98 to 8-104, 1978.

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