Global Patent Index - EP 2634360 A1

EP 2634360 A1 2013-09-04 - LOCKING STRUCTURE FOR EXTENSIONABLELADDER

Title (en)

LOCKING STRUCTURE FOR EXTENSIONABLELADDER

Title (de)

VERRIEGELUNGSSTRUKTUR FÜR EINE AUSZIEHBARE LEITER

Title (fr)

STRUCTURE DE VERROUILLAGE POUR UNE ÉCHELLE EXTENSIBLE

Publication

EP 2634360 A1 (EN)

Application

EP 11835433 A

Priority

  • CN 201010524708 A
  • CN 2011001700 W

Abstract (en)

A locking mechanism for an extending ladder, the extending ladder comprises a plurality of telescopically collapsible columns (1) and a plurality of rungs (2), the locking mechanism comprises: a connection sleeve (3) for connecting the column (1) with corresponding rung (2); a plug pin (4) disposed inside the connection sleeve (3); a push button (6) and an automatic unlocking switch (7). The automatic unlocking switch (7) is rotatably disposed, a plughole (31) is provided on the bottom surface of the connection sleeve (3), a pushing protrusion (32) is provided protruding upward on the top surface of the connection sleeve (3). The locking mechanism not only capable of unlocking the single column step by step, but also automatically unlocking the adjacent upper locking mechanism after a lower locking mechanism is unlocked.

IPC 8 full level (invention and additional information)

E06C 7/06 (2006.01); E06C 1/12 (2006.01)

CPC (invention and additional information)

E06C 7/06 (2013.01); E06C 1/125 (2013.01)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

EPO simple patent family

EP 2634360 A1 20130904; EP 2634360 A4 20141119; CN 102003136 A 20110406; CN 102003136 B 20120912; WO 2012055159 A1 20120503

INPADOC legal status


2015-03-11 [18W] WITHDRAWN

- Effective date: 20150204

2014-11-19 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20141021

2014-11-19 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: E06C 7/06 20060101AFI20141015BHEP

2014-11-19 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: E06C 1/12 20060101ALI20141015BHEP

2014-02-05 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2013-09-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20130521

2013-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR