EP 0737162 B1 19980527 - WINCH COMPRISING A HYDRAULIC MOTOR, IN PARTICULAR FOR SONAR-EQUIPPED HELICOPTERS
Title (en)
WINCH COMPRISING A HYDRAULIC MOTOR, IN PARTICULAR FOR SONAR-EQUIPPED HELICOPTERS
Title (de)
WINDE MIT HYDRAULIKMOTOR, INSBESONDERE FÜR EINEN MIT EINEM SONAR VERSEHENEN HUBSCHRAUBER
Title (fr)
TREUIL A MOTEUR HYDRAULIQUE NOTAMMENT POUR HELICOPTERE MUNI D'UN SONAR
Publication
Application
Priority
- FR 9401529 W 19941223
- FR 9315883 A 19931230
Abstract (en)
[origin: WO9518061A1] The invention concerns hydraulic motor powered winches. A supply servo-valve (405) of the motor is connected in three-way mode so that the supply line (409) used to discharge fluid during hoisting of the load is directly connected to the fluid return, and so that, during descent, the motor is no longer supplied at high pressure and fluid is caused to flow in a closed circuit without pressure. Complementary means (403) renew the fluid at a sufficiently low rate so as not to increase unduly the energy supply, and at a sufficiently high rate so as to limit fluid overheating. The invention provides winches with improved safety features which are used to immerse sonars from a helicopter.
IPC 1-7
IPC 8 full level
B66D 1/44 (2006.01)
CPC (source: EP US)
B66D 1/44 (2013.01 - EP US)
Designated contracting state (EPC)
GB
DOCDB simple family (publication)
WO 9518061 A1 19950706; CA 2180004 A1 19950706; CA 2180004 C 20041102; EP 0737162 A1 19961016; EP 0737162 B1 19980527; FR 2714663 A1 19950707; FR 2714663 B1 19960126; US 5735506 A 19980407
DOCDB simple family (application)
FR 9401529 W 19941223; CA 2180004 A 19941223; EP 95905165 A 19941223; FR 9315883 A 19931230; US 66647096 A 19960628