Extendible and retractable actuator

Details Extendible and retractable actuator Extendible and retractable actuator

2007-06-28

2008-12-02

Wilson, Lee D (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Screw

Geared

C254S00700R, C254S00200C, C254S097000, C254S098000

Reexamination Certificate

active

07458562

ABSTRACT:
An extendible and retractable actuator comprises a motor, two screws and an extendible and retractable sleeve assembly. The motor cooperates with the screws to drive the extendible and retractable sleeve assembly to extend and retract simultaneously, so as to reduce the extending and retracting time and to simplify the structure of the extendible and retractable actuator.

REFERENCES:
patent: 34063 (1862-01-01), Landis
patent: 3514090 (1970-05-01), Wuesthoff
patent: 4387881 (1983-06-01), McDuffie
patent: 4396047 (1983-08-01), Balkus
patent: 6145812 (2000-11-01), Ivanova
patent: 6581910 (2003-06-01), Granata
patent: 2003/0001144 (2003-01-01), Kubota
patent: 2008/0149904 (2008-06-01), Garceau

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