NL9201016A - Vergrendelingsmechanisme voor in twee richtingen opvouwbare ladders. - Google Patents

Vergrendelingsmechanisme voor in twee richtingen opvouwbare ladders. Download PDF

Info

Publication number
NL9201016A
NL9201016A NL9201016A NL9201016A NL9201016A NL 9201016 A NL9201016 A NL 9201016A NL 9201016 A NL9201016 A NL 9201016A NL 9201016 A NL9201016 A NL 9201016A NL 9201016 A NL9201016 A NL 9201016A
Authority
NL
Netherlands
Prior art keywords
locking mechanism
handle
folding
side rails
tilting body
Prior art date
Application number
NL9201016A
Other languages
English (en)
Dutch (nl)
Original Assignee
Wan Li Chang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CH148492A priority Critical patent/CH686317A5/de
Priority to US07/880,891 priority patent/US5170862A/en
Priority to CA002068405A priority patent/CA2068405C/fr
Priority to GB9210472A priority patent/GB2267112B/en
Priority to FR9206109A priority patent/FR2691502B3/fr
Priority to BE9200464A priority patent/BE1006169A3/fr
Application filed by Wan Li Chang filed Critical Wan Li Chang
Priority to NL9201016A priority patent/NL9201016A/nl
Publication of NL9201016A publication Critical patent/NL9201016A/nl

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
    • E06C1/3835—Foldable ladders in which the longitudinal members are brought together on folding having collapsible steps comprising a hinge in their central part

Landscapes

  • Ladders (AREA)
NL9201016A 1992-05-08 1992-06-09 Vergrendelingsmechanisme voor in twee richtingen opvouwbare ladders. NL9201016A (nl)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CH148492A CH686317A5 (de) 1992-05-08 1992-05-08 Verriegelungsvorrichtung fuer bidirektional zusammenlegbare Trittleitern.
US07/880,891 US5170862A (en) 1992-05-08 1992-05-08 Locking device for bidirectionally foldable step ladders
CA002068405A CA2068405C (fr) 1992-05-08 1992-05-11 Dispositif de verrouillage pour escabeaux pliables dans deuxsens
GB9210472A GB2267112B (en) 1992-05-08 1992-05-15 Locking device for bidirectionally foldable step ladders
FR9206109A FR2691502B3 (fr) 1992-05-08 1992-05-20 Dispositif de verrouillage pour echelle pliable dans deux directions.
BE9200464A BE1006169A3 (fr) 1992-05-08 1992-05-20 Dispositif de blocage pour des echelles a echelons pliables dans deux directions.
NL9201016A NL9201016A (nl) 1992-05-08 1992-06-09 Vergrendelingsmechanisme voor in twee richtingen opvouwbare ladders.

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US88089192 1992-05-08
CH148492A CH686317A5 (de) 1992-05-08 1992-05-08 Verriegelungsvorrichtung fuer bidirektional zusammenlegbare Trittleitern.
US07/880,891 US5170862A (en) 1992-05-08 1992-05-08 Locking device for bidirectionally foldable step ladders
CH148492 1992-05-08
CA002068405A CA2068405C (fr) 1992-05-08 1992-05-11 Dispositif de verrouillage pour escabeaux pliables dans deuxsens
CA2068405 1992-05-11
BE9200464 1992-05-20
BE9200464A BE1006169A3 (fr) 1992-05-08 1992-05-20 Dispositif de blocage pour des echelles a echelons pliables dans deux directions.
NL9201016 1992-06-09
NL9201016A NL9201016A (nl) 1992-05-08 1992-06-09 Vergrendelingsmechanisme voor in twee richtingen opvouwbare ladders.

Publications (1)

Publication Number Publication Date
NL9201016A true NL9201016A (nl) 1994-01-03

Family

ID=27507780

Family Applications (1)

Application Number Title Priority Date Filing Date
NL9201016A NL9201016A (nl) 1992-05-08 1992-06-09 Vergrendelingsmechanisme voor in twee richtingen opvouwbare ladders.

Country Status (7)

Country Link
US (1) US5170862A (fr)
BE (1) BE1006169A3 (fr)
CA (1) CA2068405C (fr)
CH (1) CH686317A5 (fr)
FR (1) FR2691502B3 (fr)
GB (1) GB2267112B (fr)
NL (1) NL9201016A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145621A (en) * 1997-09-02 2000-11-14 Nye; John E. Boarding ladder for a boat bow
US6457559B1 (en) * 2000-07-26 2002-10-01 Mark R. Schlueter Foldable ladder
US6454050B2 (en) * 2000-08-11 2002-09-24 Cosco Management, Inc. Foldable step stool with leg lock and handle
US6571915B1 (en) 2001-07-19 2003-06-03 De La Tour Rene J. Limited mobility ladder
US6802393B2 (en) * 2002-06-25 2004-10-12 Edward Zheng Foldable ladder
US7104362B2 (en) * 2003-08-27 2006-09-12 Cosco Management, Inc. Foldable step ladder with leg aligner and handle
US12331591B2 (en) * 2018-12-13 2025-06-17 Murphy Ladder Llc Ladder
US12454839B2 (en) * 2021-05-25 2025-10-28 Katherine M. Ferebee Portable bathtub stepstool and methods of making and using the same

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US958732A (en) * 1908-03-06 1910-05-24 Dennis Novelty Ladder Company Ladder.
US1054108A (en) * 1912-05-16 1913-02-25 Lee O Garraway Folding step-ladder.
US1371125A (en) * 1918-01-05 1921-03-08 Jr Herman Frank Speckman Folding ladder
US2235567A (en) * 1939-03-31 1941-03-18 Rouseville Cooperage Company Closure securing ring
US2670120A (en) * 1949-05-16 1954-02-23 Sanguineti Emanuele Collapsible ladder, double ladder, and stepladder
US2774528A (en) * 1954-03-15 1956-12-18 Harris W Crouse Folding ladder
GB923792A (en) * 1959-10-21 1963-04-18 Battista Lamberti Improvements relating to stepladders
US3084760A (en) * 1960-01-18 1963-04-09 Lamberti Battista Stepladder with folding elements
US4560030A (en) * 1984-05-04 1985-12-24 Metarplastic S.P.A. Folding ladder
DE3733702A1 (de) * 1987-10-06 1989-05-03 Collet Dieter Zusammenfaltbare steigleiter
US5295604A (en) * 1990-07-13 1994-03-22 Ryswyk Henricus J Van Toggle latch

Also Published As

Publication number Publication date
GB9210472D0 (en) 1992-07-01
CA2068405C (fr) 1995-02-21
GB2267112B (en) 1995-07-05
FR2691502A3 (fr) 1993-11-26
US5170862A (en) 1992-12-15
FR2691502B3 (fr) 1994-04-29
CH686317A5 (de) 1996-02-29
BE1006169A3 (fr) 1994-05-31
GB2267112A (en) 1993-11-24

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Legal Events

Date Code Title Description
A1C A request for examination has been filed
BV The patent application has lapsed