Linear drive device

Details Linear drive device Linear drive device

1997-11-10

1999-09-07

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Linear

318135, H02K 4100

Patent

active

059491612

ABSTRACT:
A linear drive device comprising a shaft extending in a predetermined direction and provided with a field magnet having N- and S-type magnetic poles; and a movable piece having an armature coil fitted around the shaft and opposed to the field magnet for generating a thrust when energized, being reciprocatable along the shaft, and connected to one end of a driven object, wherein thrusts generated by the armature coil at opposite sides of the shaft are determined such that the thrust generated at the side near the driven object is larger than the thrust generated at the side remote from the driven object. A linear drive device comprising a guide member; a movable piece engaged with the guide member for reciprocation along the guide member; and a sensor arranged on the movable piece for reading information on the guide member, wherein the sensor arranged on the movable piece is located substantially at a center of a yawing or pitching motion of the movable piece.

REFERENCES:
patent: 5072144 (1991-12-01), Saito et al.
patent: 5536983 (1996-07-01), Avaki et al.
patent: 5801462 (1998-09-01), Yagoto et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1807194