Global Patent Index - EP 0661233 B1

EP 0661233 B1 2001-12-19 - Tower crane

Title (en)

Tower crane

Title (de)

Turmdrehkran

Title (fr)

Grue à tour

Publication

EP 0661233 B1 (DE)

Application

EP 94111263 A

Priority

DE 9316113 U

Abstract (en)

[origin: EP0661233A1] A tower crane has a revolving superstructure (3) mounted on a platform (1) to be rotatable about a vertical axis. A bottom tower piece (5) connected to a top tower piece (6) is mounted on the revolving superstructure (3) in an articulated manner about a horizontal transverse axis. Both are connected to one another by a toggle-lever mechanism (35-39). The top tower piece (6) is connected to the revolving superstructure (3) by a link (34). A hydraulic cylinder (15) is linked to the bottom tower piece (5). The piston rod (41) of the hydraulic cylinder (15) is connected in an articulated manner to the toggle-lever mechanism (35-39) in the area of the toggle joint (39). In order to be able to quickly erect the crane and put it back again quickly into its transport position, a supporting frame (20) pivotable about a transverse axis is linked to the side of the revolving superstructure (3) opposite the bottom tower piece (5). The supporting frame (20) is provided with a wheel-carrying steering axle (21) pivotable about a vertical axis (22). A rigid axle (17) provided with wheels (16) is fastened to the underside of the bottom tower piece (5) lying roughly horizontally in the transport position. The supporting frame (20) is held in its road-travelling position by a linkage (27, 29) which is connected to the bottom tower piece (5) and, when the bottom tower piece is pivoted upwards by the hydraulic cylinder (15), likewise pivots the supporting frame (20) so that the platform (1) is lowered onto the building ground. <IMAGE>

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

B66C 23/34

IPC 8 full level (invention and additional information)

B66C 23/34 (2006.01)

CPC (invention and additional information)

B66C 23/34 (2013.01); B66C 23/344 (2013.01); B66C 23/348 (2013.01)

Designated contracting state (EPC)

BE DE ES FR IT NL

EPO simple patent family

DE 9316113 U1 19950216; EP 0661233 A1 19950705; EP 0661233 B1 20011219

INPADOC legal status


2014-10-31 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

- Effective date: 20140722

2014-07-22 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 59410015

2013-11-29 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20130719

- Year of fee payment: 20

2013-10-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Year of fee payment: 20

2003-06-02 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2003-01-31 [BERE] BE: LAPSED

- Owner name: *LIEBHERR-WERK BIBERACH G.M.B.H.

- Effective date: 20020731

2002-12-11 [26N] NO OPPOSITION FILED

2002-07-31 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

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2002-06-27 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20020627

2002-06-14 [ET] FR: TRANSLATION FILED

2002-06-03 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2002-01-31 [REF] CORRESPONDS TO:

- Document: DE 59410015 20020131

2001-12-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): BE DE ES FR IT NL

2001-12-19 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20011219

2001-12-19 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20011219

1998-03-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19980114

1995-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19951031

1995-07-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE ES FR IT NL