Linear actuator

Details Linear actuator Linear actuator

2007-05-01

2007-05-01

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

With particular motor-driven load device

Power- or motion-transmitting mechanism

C180S338000, C180S344000, C318S266000, C318S286000

Reexamination Certificate

active

11095354

ABSTRACT:
A linear actuator having a housing, a plunger slidably mounted to the housing between an extended and retracted position, and an electric motor drivingly connected to the plunger to move the plunger between its extended and retracted positions. A motor circuit controls the activation of the motor circuit and deactivates the motor circuit whenever the motor current exceeds a threshold value which varies as a function of the supply voltage to the electric motor and/or temperature. A memory storage unit stores the position of the plunger. Whenever the position of the plunger is in a state of transition between its retracted and extended position upon system initialization, the motor control circuit activates the motor to drive the plunger to a preselected extended or retracted position.

REFERENCES:
patent: 2444886 (1948-07-01), Vickers
patent: 2854113 (1958-09-01), Hallden
patent: 2978621 (1961-04-01), Martinek
patent: 3165656 (1965-01-01), Korthaus
patent: 3682283 (1972-08-01), Sato
patent: 3742303 (1973-06-01), Dageford
patent: 4095570 (1978-06-01), Sheffer et al.
patent: 4414630 (1983-11-01), Harris et al.
patent: 4677355 (1987-06-01), Baumann
patent: 4705969 (1987-11-01), Gross
patent: 4845392 (1989-07-01), Mumbower
patent: 4858491 (1989-08-01), Shube
patent: 4902953 (1990-02-01), Kraft et al.
patent: 5063740 (1991-11-01), Aihara
patent: 5267635 (1993-12-01), Peterson
patent: 5712548 (1998-01-01), Tice et al.
patent: 5788008 (1998-08-01), Fort
patent: 5808438 (1998-09-01), Jeffrey
patent: 5823636 (1998-10-01), Parker
patent: 5857061 (1999-01-01), Chang et al.
patent: 6213259 (2001-04-01), Hanson
patent: 6321611 (2001-11-01), Szu
patent: 6508139 (2003-01-01), Onodera
patent: 6548971 (2003-04-01), Gokturk
patent: 2003/0062727 (2003-04-01), Reddmann

Affiliated with

Also associated with

Rating

Linear actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3824109