Hydraulic actuator for belt type continuously variable...

Details Hydraulic actuator for belt type continuously variable... Hydraulic actuator for belt type continuously variable...

2009-05-22

2011-10-04

Mansen, Michael R (Department: 4187)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

C474S017000, C474S018000

Reexamination Certificate

active

08029395

ABSTRACT:
A hydraulic actuator for a belt type continuously variable transmission, with which a smooth operation is secured and both superior productivity and reduced manufacturing costs can be expected, includes a first cylinder provided on a movable sheave, a drum having a first drum portion that covers the first cylinder and a second drum portion that is fitted to a boss portion of the movable sheave and formed with a plurality of projections, a first plunger having a cylindrical portion that is fitted to the first cylinder and the second drum portion to form a first hydraulic chamber, and a second plunger fitted to the cylindrical portion and the first cylinder to form a second hydraulic chamber. An oil passage connecting the first hydraulic chamber and the second hydraulic chamber is formed by a gap between the second drum portion and cylindrical portion, which are fitted together.

REFERENCES:
patent: 4552545 (1985-11-01), Koivunen
patent: 5244437 (1993-09-01), Haley et al.
patent: 5776022 (1998-07-01), Schellekens
patent: 6302971 (2001-10-01), Ohara et al.
patent: 6443864 (2002-09-01), Friedmann
patent: 6835147 (2004-12-01), Iwata et al.
patent: 2001/0031678 (2001-10-01), Schmid et al.
patent: 2001/0044350 (2001-11-01), Nishigaya et al.
patent: 2005/0197221 (2005-09-01), Nozawa et al.
patent: 2-62449 (1990-03-01), None
patent: 3-33542 (1991-02-01), None
patent: 2005140232 (2005-06-01), None

Affiliated with

Also associated with

Rating

Hydraulic actuator for belt type continuously variable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic actuator for belt type continuously variable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic actuator for belt type continuously variable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4293073