The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2007
Filed:
Feb. 01, 2006
Kiyoshi Kimura, Obu, JP;
Shigeru Yoshiyama, Kariya, JP;
Taku Itoh, Chita-gun, JP;
Hideo Inaba, Okazaki, JP;
Joji Yamaguchi, Chiryu, JP;
Akihiko Kameshima, Hekinan, JP;
Toshiki Fujiyoshi, Okazaki, JP;
Kiyoshi Kimura, Obu, JP;
Shigeru Yoshiyama, Kariya, JP;
Taku Itoh, Chita-gun, JP;
Hideo Inaba, Okazaki, JP;
Joji Yamaguchi, Chiryu, JP;
Akihiko Kameshima, Hekinan, JP;
Toshiki Fujiyoshi, Okazaki, JP;
DENSO Corporation, Kariya, Aichi-pref., JP;
Abstract
An actuator for a valve lift controller comprises a case forming a first and second spaces therein. The first space is supplied with lubricating fluid. The actuator further comprises a feed screw mechanism including a cylindrical spindle and a screw, and converts a rotational movement of the spindle to a linear movement of the screw. The spindle includes a first end portion open to the first space and a second end portion closed to the second space therein. The screw straddles borders between an interior of the spindle, the first space, and an external space. The actuator includes a motor unit which is located in the second space and rotates the spindle. The actuator further includes a sealing member sealing a gap between the case and the spindle to separate the first and second spaces.