Linear electromechanical screw actuator for a parking brake

Brakes – Operators – Electric and mechanical

Reexamination Certificate

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Details

C188S00200R, C188S072800

Reexamination Certificate

active

07337883

ABSTRACT:
The actuator comprises a tubular nut (22) coupled by means of an external thread (21) to the casing (12) of the actuator. The nut has an internal thread (23) opposite the external thread, for engaging a threaded rod (11) which is prevented from rotating with respect to the casing. A geared motor (13, 14) rotates a pinion (15) which, through two straight spur gears (161, 162), causes the nut (22) to bring about a screwing movement along a longitudinal axis (x), while the rod (11) translates rapidly in telescopic manner with respect to the casing (12). The spur gears have a pinion portion of greater diameter (161a,162a) meshing with the pinion (15), and a splined shaft portion (161b,162b) meshing with a pinion member (22b) integral with the nut (22).

REFERENCES:
patent: 4804073 (1989-02-01), Taig et al.
patent: 5148894 (1992-09-01), Eddy, Jr.
patent: 5178237 (1993-01-01), Ursel et al.
patent: 5542513 (1996-08-01), Reyes
patent: 5590744 (1997-01-01), Belmond
patent: 6367593 (2002-04-01), Siler et al.
patent: 6662909 (2003-12-01), Taniguchi
patent: 6966410 (2005-11-01), Tacker
patent: 7070026 (2006-07-01), Conti et al.
patent: 2002/0100647 (2002-08-01), Miyakawa et al.
patent: 2003/0051569 (2003-03-01), Kapaan et al.

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