Expansible chamber devices – With cushioning means effective over a portion only of stroke
Reexamination Certificate
2011-08-23
2011-08-23
Lazo, Thomas E (Department: 3745)
Expansible chamber devices
With cushioning means effective over a portion only of stroke
C092S143000, C092S120000
Reexamination Certificate
active
08001884
ABSTRACT:
A swivel motor has a plurality of work chambers and a join system between the work chambers that joins the work chambers at least by pairs. The arrangement of the joined work chambers is carried out in such a way that the work chambers which are connected to the first pressure medium connection alternate with those which are connected to the second pressure medium connection. At least two work chambers associated with different pressure medium connections are connected to a pressure compensation element, and the pressure compensation element is formed by a compensation space that is divided by a movable dividing element. A partial compensation space is connected in each instance to at least one work chamber of a pressure medium connection, and the dividing element is held in an initial position by oppositely acting springs. The spring force characteristic is formed by a spring arrangement which comprises a plurality of springs and has at least one coil spring and one elastomer spring. At least one volume compensation space is available for the elastomer spring.
REFERENCES:
patent: 6405845 (2002-06-01), Muller et al.
patent: 6880451 (2005-04-01), Beilner et al.
patent: 7231865 (2007-06-01), Wehaus et al.
patent: 101 40 460 (2003-03-01), None
patent: 10 2004 039 767 (2006-03-01), None
patent: 10 2004 051 444 (2006-04-01), None
patent: 1 085 249 (2001-03-01), None
Cohen Pontani Lieberman & Pavane LLP
Lazo Thomas E
ZF Friedrichshafen AG
LandOfFree
Swivel motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Swivel motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swivel motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2716218