Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-05-21
2000-05-23
Lefkowitz, Edward
Communications: electrical
Condition responsive indicating system
Specific condition
340626, 296107, 296117, 91494, 91530, G08B 2100
Patent
active
060670215
ABSTRACT:
An apparatus for hydraulically operating a rear cover, covering top or the like (1) on a vehicle, with at least one double-acting hydraulic working cylinder (3), which, on the one hand, is connected to the vehicle and, on the other hand, to the covering top, includes working chambers (8, 9) in connection with each one side of a switched pressure source (12) via one check valve (10, 11) each, wherein both of the check valves have an mutually releasing device and each of the working chambers parallel with respect to the check valves is kept via a pre-stress valve (15, 16), which steers into the tank, at a specified pressure level. To realize, in a simple and safe way, a passive wedging protection, in at least one connection line (4, 5) to the working cylinder (3), a line (22) enters the tank (17), in which a proportional pressure valve (23) is inserted which is controlled by the control electronics and is equal to the exact pressure that is necessary for the movement of the covering top (1) or the like.
REFERENCES:
patent: 4533908 (1985-08-01), Fujikawa
patent: 5110175 (1992-05-01), Fischback
patent: 5335926 (1994-08-01), Stolle
patent: 5682807 (1997-11-01), Mentink
patent: 5760695 (1998-02-01), Huber
Hoerbiger Hydraulik GmbH
Lefkowitz Edward
LandOfFree
Apparatus for hydraulically moving a vehicle part does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for hydraulically moving a vehicle part, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for hydraulically moving a vehicle part will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1839797