EP 0187610 A3 19861203 - ROTARY FLUID DEVICES
Title (en)
ROTARY FLUID DEVICES
Publication
Application
Priority
US 67755384 A 19841203
Abstract (en)
[origin: EP0187610A2] A rotary fluid motor or pump device having opposing cam surfaces and a rotor with vanes shiftable within vane slots of the rotor and riding on the cam surfaces is disclosed. The device includes at least eight vane members circumferentially spaced about the rotor and cam surfaces having diametrically opposed slopes extending over arcs of at least about 130 DEG , with means for the entrance or exit of fluid along the entire length of each such slope of 130 DEG or more. At least six chamber spaces between vanes of the device always function to receive fluid and at least six such chamber spaces always function to exit fluid from the device, regardless of the rotary orientation of the rotor. A device for hydraulically assisting the steering vehicles is provided wherein rotary valve elements and rotary motor elements are concentrically mounted about a steering shaft.
IPC 1-7
IPC 8 full level
F04C 2/34 (2006.01); F01C 1/344 (2006.01)
CPC (source: EP)
F01C 1/3448 (2013.01)
Citation (search report)
- [Y] US 4028028 A 19770607 - FUCHS JR FRANCIS JOSEPH
- [Y] US 3468260 A 19690923 - BELDEN WILLIAM PERRY, et al
- [Y] DE 235083 C
- FR 328568 A 19030716 - PRETEXTAT LECOMTE [FR], et al
- [A] US 1683962 A 19280911 - CROWN WILLIAM F
- [A] FR 1354689 A 19640306
- [A] DE 131345 C
- [A] FR 335007 A 19040108 - JULIUS WILHELM VON PITTLER [DE]
- [A] US 2220095 A 19401105 - GREY RALPH E
- [A] OFFICIAL GAZETTE OF THE UNITED STATES PATENT OFFICE, vol.132, no. 5, February 4, 1980, page 1116; Government Printing Office, Washington, US & US-A 878600 (BERRENBERG) 27-03-1907
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0187610 A2 19860716; EP 0187610 A3 19861203; CA 1233073 A 19880223; JP S61223285 A 19861003
DOCDB simple family (application)
EP 85630211 A 19851202; CA 496678 A 19851202; JP 27234985 A 19851203