Redundant differential linear actuator

Details Redundant differential linear actuator Redundant differential linear actuator

1995-05-11

1996-11-26

Hajec, Donald T.

Communications: radio wave antennas

Antennas

With means for moving directive antenna for scanning,...

343761, 343765, 343766, 343878, H01Q 300

Patent

active

055790186

ABSTRACT:
A positioning device orients an antenna element, or an entire antenna of multiple elements, or other payload requiring positioning relative to a supporting base. The antenna element is pivotally mounted upon the base, and a strut extends from the antenna element to an actuator assembly which moves the strut to adjust the orientation of the antenna element. The actuator assembly has two linear actuators which extend from the base, respectively, to opposite ends of a lever which, in turn, connects via a pivot to an end of the strut distant from the antenna element. The lever pivot is located between the ends of the lever at a location closer to one of the ends than to the other of the ends of the lever, such as a two-to-one ratio of lever arm lengths. Use of a first of the actuators by itself serves for the primary source of adjustment of the position of the antenna element. The second actuator provides a backup or redundant mode of the adjustment, and also serves to extend the range of adjustment from that which can be accomplished alone by the first actuator. Each actuator provides linear motion, and may include components such as an electric stepping motor allowing for electronic control of the adjustment in stepwise fashion with fine step control.

REFERENCES:
patent: 2907031 (1959-09-01), Meredith
patent: 3215391 (1965-11-01), Storm
patent: 3286266 (1966-11-01), Barnes
patent: 3407404 (1968-10-01), Cook et al.
patent: 3658286 (1972-04-01), Terai et al.
patent: 4095770 (1978-06-01), Long
patent: 4197548 (1980-04-01), Smith et al.
patent: 4360182 (1982-11-01), Titus
patent: 4475110 (1984-10-01), Hutchins
patent: 4582291 (1986-04-01), Matthews
patent: 4647939 (1987-03-01), Kolhoff
patent: 4848179 (1989-07-01), Ubhayakar

Affiliated with

Also associated with

Rating

Redundant differential 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 Redundant differential linear actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redundant differential linear actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1976355