Driving apparatus using transducer

Details Driving apparatus using transducer Driving apparatus using transducer

1997-10-09

2000-08-29

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, H02N 200

Patent

active

061113360

ABSTRACT:
A driving apparatus using a transducer. The apparatus comprises an electromechanical transducer, a driving shaft, a moving member and a pushing member. The driving shaft is coupled with the electro-mechanical transducer; the moving member is pushed against the driving shaft for frictional coupling therewith, the pushing member being interposed between the driving shaft and the moving member. The moving member is connected with the target moving object such as a lens mechanism. In operation, the electromechanical transducer is fed with driving pulses of a frequency of at least 18 kHz so that the transducer and the driving shaft will be displaced slowly in one direction and rapidly in the opposite direction, whereby the moving member coupled frictionally with the driving shaft is driven axially in a reciprocating manner at two different velocities. Repeating these operations allows the moving member to move slowly in the same axial direction in which the driving shaft is driven, whereby the lens mechanism or the like connected to the moving member is moved up to the desired position.

REFERENCES:
patent: 4195243 (1980-03-01), Thaxter
patent: 4468583 (1984-08-01), Mori
patent: 4613782 (1986-09-01), Mori et al.
patent: 4620122 (1986-10-01), Howell
patent: 4645964 (1987-02-01), Hiramatsu et al.
patent: 4736131 (1988-04-01), Fujimoto
patent: 4894579 (1990-01-01), Higuchi et al.
patent: 4947077 (1990-08-01), Murata
patent: 5013956 (1991-05-01), Kurozumi et al.
patent: 5013958 (1991-05-01), Ohnishi et al.
patent: 5036245 (1991-07-01), Ohnishi et al.
patent: 5039899 (1991-08-01), Yamaguchi
patent: 5166572 (1992-11-01), Ohnishi
patent: 5170088 (1992-12-01), Naito et al.
patent: 5225941 (1993-07-01), Saito et al.
patent: 5233258 (1993-08-01), Myoga et al.
patent: 5237238 (1993-08-01), Berghaus et al.
patent: 5252884 (1993-10-01), Dona
patent: 5410206 (1995-04-01), Luecke et al.
patent: 5424597 (1995-06-01), Gloss et al.
patent: 5455478 (1995-10-01), Kimura et al.
patent: 5465021 (1995-11-01), Visscher et al.
patent: 5523643 (1996-06-01), Fujimura et al.
patent: 5554905 (1996-09-01), Gschwind et al.
patent: 5563465 (1996-10-01), Nakahara et al.
patent: 5589723 (1996-12-01), Yoshida et al.
patent: 5596242 (1997-01-01), Seki et al.

Affiliated with

Also associated with

Rating

Driving apparatus using transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1253000