EP 1070847 A2 20010124 - Hydraulic gerotor motor and parking brake
Title (en)
Hydraulic gerotor motor and parking brake
Title (de)
Hydraulischer Gerotor-Motor und Feststellbremse
Title (fr)
Moteur hydraulique avec engrenage intérieur et frein de stationnement
Publication
Application
Priority
US 35900199 A 19990722
Abstract (en)
A rotary fluid pressure device having a fluid displacement mechanism (19) and an output shaft (39) rotatable relative to a housing (15,21,41). The device has first and second brake discs (51,53), to brake the rotation of the output shaft. The brake discs are engaged by an actuation piston (59;91) biased by a Belleville washer (85) toward an engaged condition. The actuation piston (59;91) separates a first pressure chamber (73) from a second pressure chamber (75), the washer (85) being disposed in the first pressure chamber (73). When both pressure chamber are drained, the actuation piston is applied by only the washer (85), but when the pressure chamber (73) is pressurized, the actuation piston (59;91) is applied with a substantially greater force, resulting in a greater braking torque. <IMAGE>
IPC 1-7
IPC 8 full level
F03C 2/08 (2006.01); F04C 2/10 (2006.01); F04C 15/00 (2006.01); F16D 55/40 (2006.01); F16D 65/18 (2006.01); F16D 65/20 (2006.01)
CPC (source: EP KR)
F03C 2/08 (2013.01 - KR); F04C 2/104 (2013.01 - EP); F04C 15/0057 (2013.01 - EP); F04C 15/0084 (2013.01 - EP)
Citation (applicant)
- US 3616882 A 19711102 - WHITE HARVEY CLINTON
- US 4981423 A 19910101 - BISSONNETTE LEE A [US]
- US 4741681 A 19880503 - BERNSTROM MARVIN L [US]
- US 5211551 A 19930518 - UPPAL SOHAN L [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1070847 A2 20010124; JP 2001065607 A 20010316; KR 20010066936 A 20010711
DOCDB simple family (application)
EP 00115130 A 20000712; JP 2000220722 A 20000721; KR 20000041310 A 20000719