Global patent index - EP 1082250 A1

EP 1082250 A1 2001-03-14 - HYDRAULIC DRIVE SYSTEM

Title (en)

HYDRAULIC DRIVE SYSTEM

Title (de)

HYDRAULISCHES ANTRIEBSSYSTEM

Title (fr)

SYSTEME D'ENTRAINEMENT HYDRAULIQUE

Publication

EP 1082250 A1 (EN)

Application

EP 99922024 A

Priority

  • CA 9900490 W
  • GB 9811376 A

Abstract (en)

[origin: WO9961306A1] A hydraulic propulsion system for a human powered wheeled vehicle includes a treadle pump, accumulator, a hydraulic motor, reservoir and valve means connected in a hydraulic circuit. The motor is used for driving a wheel, and is connected by a bidirectional clutch under operator control to provide regenerative braking. Improved energy conservation and acceleration are obtained. A hydraulic pressure ratio transducer, under manual control, may be included in the circuit for controlling acceleration and braking.

IPC 1-7 (main, further and additional classification)

B62M 19/00

IPC 8 full level (invention and additional information)

B62M 19/00 (2006.01)

CPC (invention and additional information)

B62M 19/00 (2013.01)

Citation (search report)

See references of WO 9961306A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

EPO simple patent family

WO 9961306 A1 19991202; AU 3924299 A 19991213; CA 2333369 A1 19991202; CN 1305420 A 20010725; EP 1082250 A1 20010314; GB 9811376 D0 19980722; JP 2002516221 A 20020604

INPADOC legal status

2008-01-04 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Ref Legal Event Code: WD

- Ref Document Number: 1037583

- Country of Ref Document: HK

2004-01-07 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030624

2003-04-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030212

2001-03-14 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001213

2001-03-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

2001-03-14 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: RO PAYMENT 20001213