Electric actuators

Details Electric actuators Electric actuators

1984-05-07

1985-10-08

Shoop, Jr., William M.

Electricity: motive power systems

Braking

Friction braking

318254, 318466, 318362, 318371, 318273, 318269, 310 80, 310 83, 188162, H02K 706, H02K 710

Patent

active

045462950

ABSTRACT:
The present invention provides an electric actuator having an output member movable from a first variable position to a second variable position; an electric motor operable to control a spring system to exert an output force on the output member when in its second position; a device for generating an electrical signal when the output member is about to leave the second position as it returns to the first position; and a motor-control electrical circuit which recognizes the generation of the electrical signal and thereafter operates the electric motor to a pre-determined degree to move the output member a corresponding pre-determined distance back to the first position so that there is preserved a substantially constant distance between the first and second positions.

REFERENCES:
patent: 874219 (1907-12-01), Mahoney
patent: 2418351 (1947-04-01), Jackson
patent: 2446393 (1948-08-01), Russell
patent: 2479019 (1949-08-01), Ochtman
patent: 2480212 (1949-08-01), Baines
patent: 2756014 (1956-07-01), Leibfried
patent: 3038352 (1962-06-01), Murphy
patent: 3159758 (1964-12-01), Hemperly et al.
patent: 3399879 (1968-09-01), Takeshi Hojo et al.
patent: 3659683 (1972-05-01), Betzing
patent: 4136304 (1979-01-01), Baechler et al.
patent: 4364111 (1982-12-01), Jocz
patent: 4445075 (1984-04-01), Fry
patent: 4463291 (1984-07-01), Usry

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2222239