Global Patent Index - EP 0850364 B1

EP 0850364 B1 20000126 - HYDROSTATIC DRIVE CONTROL DEVICE

Title (en)

HYDROSTATIC DRIVE CONTROL DEVICE

Title (de)

VORRICHTUNG ZUM ANSTEUERN EINES HYDROSTATISCHEN ANTRIEBES

Title (fr)

DISPOSITIF DE COMMANDE D'UN MECANISME D'ENTRAINEMENT HYDROSTATIQUE

Publication

EP 0850364 B1 20000126 (DE)

Application

EP 96931065 A 19960910

Priority

  • AT 150995 A 19950912
  • EP 9603964 W 19960910

Abstract (en)

[origin: US6082108A] PCT No. PCT/EP96/03964 Sec. 371 Date Mar. 11, 1998 Sec. 102(e) Date Mar. 11, 1998 PCT Filed Sep. 10, 1996 PCT Pub. No. WO97/10444 PCT Pub. Date Mar. 20, 1997A device for controlling a hydrostatic drive (1) having a resonator (2) which is connected on the one hand to the hydrostatic drive (1) and on the other hand to a pressurized-fluid supply line (4) and to a return line (5), and having a periodically actuatable switch valve (3) which connects the resonator (2) alternately with the pressurized-fluid supply line (4) and the return line (5). In order to assure advantageous control conditions, the resonator (2) has at least one pressure chamber (6) with a movable, oscillatable chamber limitation (7) for changing the chamber volume movable chamber limitation (7) form a part of a single-mass oscillator comprising mass and spring (10). The pressure chamber (6) which can be connected alternately with the pressurized-fluid supply line (4), the return line (5) and the hydrostatic drive (1) can be acted on via the switch valve (3) with a switch frequency which lies in the supraresonance region of the single-mass oscillator.

IPC 1-7

F15B 21/12

IPC 8 full level

F15B 21/12 (2006.01)

CPC (source: EP US)

F15B 21/125 (2013.01 - EP US)

Designated contracting state (EPC)

AT DE FR GB IT

DOCDB simple family (publication)

WO 9710444 A1 19970320; AT A150995 A 19971215; AT E189295 T1 20000215; CZ 286073 B6 20000112; CZ 74398 A3 19991013; DE 59604316 D1 20000302; EP 0850364 A1 19980701; EP 0850364 B1 20000126; US 6082108 A 20000704

DOCDB simple family (application)

EP 9603964 W 19960910; AT 150995 A 19950912; AT 96931065 T 19960910; CZ 74398 A 19960910; DE 59604316 T 19960910; EP 96931065 A 19960910; US 4326098 A 19980311