Linear or rotary actuator

Details Linear or rotary actuator Linear or rotary actuator

2005-02-22

2005-02-22

Joyce, William C. (Department: 3682)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

C074S089400, C310S020000, C310S080000, C310S086000

Reexamination Certificate

active

06857332

ABSTRACT:
An actuator (1) for the linear displacement of a member to be controlled comprising a motor part (2) and an actuating device part (3) including a threaded screw (11) with linear displacement, and a rotary member (9) provided with a threaded portion (10) matching the screw thread, the rotary member capable of being driven in rotation by the motor part and being supported by bearings (15,16) in the form of roller bearing stops with four contact points arranged on either axial side of said threaded portion to guide the rotary member axially and radially. The raceways of the balls are directly in the rotary member and integral with parts of the body (14) or the cover (13) of the actuator.

REFERENCES:
patent: 4019616 (1977-04-01), Thorne
patent: 4362344 (1982-12-01), Lederman
patent: 4850459 (1989-07-01), Johannesen
patent: 4928543 (1990-05-01), Johannesen
patent: 5100271 (1992-03-01), Hattori
patent: 5491633 (1996-02-01), Henry et al.

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