Linear actuator

Details Linear actuator Linear actuator

2007-06-20

2009-08-18

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S012060, C310S013000, C310S015000, C310S016000, C310S017000, C310S06800R, C369S044140

Reexamination Certificate

active

07576456

ABSTRACT:
In a linear actuator (1), on the inside of a rectangular tubular movable element (3), a linear guide (14) that supports the movable element (3) so as to be linearly movable is positioned at a center of the movable element (3), and a position detecting mechanism (20) and load attaching member (13) that sandwich the linear guide are disposed linearly in a vertical direction. This arrangement enables a center of gravity of the movable element (3) to be matched with a center of the linear guide (14). A magnetic circuit is in a bilaterally symmetrical relationship with regard to the center of the movable element (3). Therefore, a center of a thrust force that acts upon the movable element (3) is matched with the center of the movable element (3). The center of the thrust force that acts upon the movable element (3), the center of gravity of the movable element (3), and the center of the linear guide (14) are positioned at the center of the movable element (3). Resistance to sliding in the movable element (3) can be reduced without unreasonable stress being placing on the linear guide (14). Therefore, a magnetically driven linear actuator that has highly precise positioning and that is durable can be realized.

REFERENCES:
patent: 4864170 (1989-09-01), Eguchi
patent: 4960321 (1990-10-01), Takahashi
patent: 5229669 (1993-07-01), Takei
patent: 5373496 (1994-12-01), Tomita et al.
patent: 5659433 (1997-08-01), Marino et al.
patent: 5892747 (1999-04-01), Okada et al.
patent: 6163090 (2000-12-01), Brown et al.
patent: 6385156 (2002-05-01), Furukawa et al.
patent: 6452895 (2002-09-01), Kawano
patent: 6567352 (2003-05-01), Inui et al.
patent: 6680883 (2004-01-01), Inui et al.
patent: 6859325 (2005-02-01), Kato et al.
patent: 2004/0052170 (2004-03-01), Ikeda et al.
patent: 2004/0245861 (2004-12-01), Miyajima et al.
patent: 2006/0055252 (2006-03-01), Tseng
patent: 2006/0250029 (2006-11-01), Kelly et al.

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-4115390