Linear actuator

Details Linear actuator Linear actuator

1996-09-24

1998-09-22

Marmor, Charles A.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248R, 192141, F16H 2520

Patent

active

058098330

ABSTRACT:
A linear actuator includes a motor having a rotatable output shaft, a lead screw having a worm gear thread, a forward end and a rear end, a worm gear drive train connected between the motor output shaft and the lead screw to convert the rotary motion of the motor output shaft into rotary motion of the lead screw, an extension tube assembly mounted at the forward end of the lead screw, where the extension tube assembly includes an extension tube concentrically disposed around the forward end of the lead screw, the extension tube having a forward end for contacting a device requiring linear motion, and a rear end, a nut connected to the rear end of the extension tube and threadedly mounted on the lead screw so that rotation of the lead screw moves the nut and the extension tube assembly axially along the lead screw, and a mounting adapter positioned at the rear end of the lead screw for rotatably mounting the lead screw and for attaching the linear actuator to a support structure.

REFERENCES:
patent: 3951004 (1976-04-01), Heesch
patent: 4241814 (1980-12-01), Masclet
patent: 4318304 (1982-03-01), Lang
patent: 4602520 (1986-07-01), Nishikawa et al.
patent: 4669325 (1987-06-01), Nishikawa et al.
patent: 4679457 (1987-07-01), Nishikawa et al.
patent: 4790201 (1988-12-01), Gheddo
patent: 4858481 (1989-08-01), Abraham
patent: 5090513 (1992-02-01), Bussinger
patent: 5388471 (1995-02-01), DeCampos et al.
patent: 5461935 (1995-10-01), Hill
patent: 5620078 (1997-04-01), Nakamura et al.
patent: 5655636 (1997-08-01), Lang et al.

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