Electric actuator

Details Electric actuator Electric actuator

1996-07-12

1998-09-22

Marmor, Charles A.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74499, 744248R, 310112, F16H 2520

Patent

active

058098313

ABSTRACT:
An electric actuator includes a hollow actuator housing, an electric motor connected to the hollow actuator housing, a feed screw shaft coupled to the drive shaft of the electric motor, for transmitting rotational drive power from the electric motor, and a spline tube disposed in the hollow actuator housing in surrounding relationship to the feed screw shaft and held in engagement with the feed screw shaft, for displacement axially with respect to the hollow actuator housing with the rotational drive power transmitted by the feed screw shaft. Since the feed screw shaft is surrounded by the spline tube, dust and dirt particles are prevented from being deposited on the feed screw shaft.

REFERENCES:
patent: 2860266 (1958-11-01), Schrader
patent: 3153948 (1964-10-01), Adams
patent: 3606801 (1971-09-01), Williams
patent: 3682283 (1972-08-01), Sato et al.
patent: 4082247 (1978-04-01), Dalton
patent: 4635491 (1987-01-01), Yamano et al.
patent: 4739669 (1988-04-01), Yokose et al.
patent: 5090513 (1992-02-01), Bussinger
patent: 5269343 (1993-12-01), Trapp
patent: 5346045 (1994-09-01), Bennett et al.
patent: 5488880 (1996-02-01), Sartorio
patent: 5673591 (1997-10-01), Kimura et al.

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