EP 0505437 B1 19940316 - PISTON AND DRUM DRIVE SYSTEM.
Title (en)
PISTON AND DRUM DRIVE SYSTEM.
Title (de)
ANTRIEBSSYSTEM FÜR EINE SEITROMMEL UND FÜR EINEN HYDRAULIKKREIS.
Title (fr)
SYSTEME D'ENTRAINEMENT A PISTON ET A TAMBOUR.
Publication
Application
Priority
US 45020489 A 19891212
Abstract (en)
[origin: WO9108976A1] A drum and hydraulic power drive system incorporated within the interior of a drum (10) used for reeling cable in and out, a reversible electric motor (20) which drives the drum (10) from the inside through a gearset (26, 28, 38, 40). Also carried within the drum is a hydraulic power generating system (21) including a manifold structure (42), a gear pump (55) driven directly from the opposite end of the reversibly motor (20) operating in a closed hydraulic circuit to supply hydraulic pressure for example to reversibly move a piston (49) in a cylinder (47).
IPC 1-7
IPC 8 full level
B66D 1/12 (2006.01); B66D 1/44 (2006.01); B66D 1/56 (2006.01); B66D 3/22 (2006.01)
CPC (source: EP)
B66D 1/44 (2013.01); B66D 1/56 (2013.01); B66D 3/22 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9108976 A1 19910627; CA 2069494 A1 19910613; CA 2069494 C 20020618; DE 69007492 D1 19940421; DE 69007492 T2 19940825; EP 0505437 A1 19920930; EP 0505437 B1 19940316; JP H05502428 A 19930428
DOCDB simple family (application)
US 9006454 W 19901107; CA 2069494 A 19901107; DE 69007492 T 19901107; EP 91901086 A 19901107; JP 50145391 A 19901107