EP 0263558 A2 19880413 - Hydraulic piston motor having means for measuring the speed of rotation.
Title (en)
Hydraulic piston motor having means for measuring the speed of rotation.
Title (de)
Hydraulischer Kolbenmotor mit Mitteln zum Messen der Rotationsgeschwindigkeit.
Title (fr)
Moteur hydraulique à piston avec des moyens pour mesurer la vitesse de rotation.
Publication
Application
Priority
IT 2195186 A 19861009
Abstract (en)
The hydraulic piston motor comprising means for measuring the speed of rotation according to the invention comprises a rotating hydraulic distributor adapted to supply hydraulic pressure fluid in cycles to the pistons driving the motor, and having a revolving internal member (15) rotating integrally with the drive shaft (16) and comprising ducts (17) for distributing hydraulic fluid, a sensor (8) being present in a fixed position on the hydraulic distributor and facing the revolving member (15), the outer surface of which is formed with discontinuities (12) detectable by the sensor (8) which, corresponding to the periodic detection of the aforementioned discontinuties during the rotation of the revolving member (15), generates a signal at a frequency proportional to the speed of rotation of the member (15), means being present for protecting the sensors from the pressure of the hydraulic fluid in the fixed outer casing of the distributor.
IPC 1-7
IPC 8 full level
F04B 49/10 (2006.01)
CPC (source: EP)
F04B 49/103 (2013.01); F04B 2201/1201 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0263558 A2 19880413; EP 0263558 A3 19900103; EP 0263558 B1 19940119; AT E100534 T1 19940215; DE 3788838 D1 19940303; DE 3788838 T2 19940811; IT 1197830 B 19881206; IT 8621951 A0 19861009; IT 8621951 A1 19880409
DOCDB simple family (application)
EP 87201880 A 19871001; AT 87201880 T 19871001; DE 3788838 T 19871001; IT 2195186 A 19861009