Global Patent Index - EP 0866026 A3

EP 0866026 A3 2000-01-05 - Telescopic mast construction for a lift-truck

Title (en)

Telescopic mast construction for a lift-truck

Title (de)

Ausfahrbare Mastkonstruktion für einen Hubwagen

Title (fr)

Construction de mât télescopique pour un chariot élévateur

Publication

EP 0866026 A3 (DE)

Application

EP 98100493 A

Priority

DE 19710556 A

Abstract (en)

[origin: EP0866026A2] A telescopic mast construction (10) for a lift truck has a mast fixed to the wagon. A mast is movable up and down relative to the fixed mast, and a load supporting device is located on the movable mast, a first lifting cylinder which is coupled at one end to the movable mast and at the other end through tension devices to the load-supporting device plus at least one second lifting cylinder to extend the movable mast. The lifting cylinders are connected parallel to a common hydraulic supply and are chosen in their effective cross-section so that the first cylinder lifts the load- supporting device before the second cylinder extends the movable mast. The first cylinder is constructed so that before the end of its extension stroke, a gradually increasing opposing pressure is built up that is dimensioned so that the increase in pressure caused at the lifting cylinders suffices to extend the second cylinder before the first one has reached its dead point.

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

B66F 9/08

IPC 8 full level (invention and additional information)

B66F 9/08 (2006.01)

CPC (invention and additional information)

B66F 9/08 (2013.01)

Citation (search report)

Designated contracting state (EPC)

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

EPO simple patent family

DE 19710556 A1 19980917; DE 19710556 C2 19990311; EP 0866026 A2 19980923; EP 0866026 A3 20000105

INPADOC legal status


2001-03-21 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20000706

2000-09-13 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IT SE

2000-01-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

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

2000-01-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

1998-09-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB IT SE

1998-09-23 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI