CA3130716C - Foldable ladder - Google Patents

Foldable ladder Download PDF

Info

Publication number
CA3130716C
CA3130716C CA3130716A CA3130716A CA3130716C CA 3130716 C CA3130716 C CA 3130716C CA 3130716 A CA3130716 A CA 3130716A CA 3130716 A CA3130716 A CA 3130716A CA 3130716 C CA3130716 C CA 3130716C
Authority
CA
Canada
Prior art keywords
ladder
stabilizer
columns
column
stile
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CA3130716A
Other languages
English (en)
French (fr)
Other versions
CA3130716A1 (en
Inventor
Mitchell I. Kieffer
Allen A. Caldwell
Nathan L. Schlueter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Core Distribution Inc
Original Assignee
Core Distribution Inc
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 claimed from US14/557,944 external-priority patent/US9580959B2/en
Priority claimed from US14/558,042 external-priority patent/US9416591B2/en
Application filed by Core Distribution Inc filed Critical Core Distribution Inc
Publication of CA3130716A1 publication Critical patent/CA3130716A1/en
Application granted granted Critical
Publication of CA3130716C publication Critical patent/CA3130716C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder
    • 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
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other
    • 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
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/423—Ladder stabilising struts
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/46—Non-skid equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
CA3130716A 2014-12-02 2015-12-02 Foldable ladder Active CA3130716C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US14/557,944 2014-12-02
US14/557,944 US9580959B2 (en) 2014-12-02 2014-12-02 Foldable ladder
US14/558,042 2014-12-02
US14/558,042 US9416591B2 (en) 2014-12-02 2014-12-02 Telescoping ladder with stabilizers
CA2968554A CA2968554C (en) 2014-12-02 2015-12-02 Foldable ladder

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2968554A Division CA2968554C (en) 2014-12-02 2015-12-02 Foldable ladder

Publications (2)

Publication Number Publication Date
CA3130716A1 CA3130716A1 (en) 2016-06-09
CA3130716C true CA3130716C (en) 2023-09-26

Family

ID=54849735

Family Applications (2)

Application Number Title Priority Date Filing Date
CA3130716A Active CA3130716C (en) 2014-12-02 2015-12-02 Foldable ladder
CA2968554A Active CA2968554C (en) 2014-12-02 2015-12-02 Foldable ladder

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA2968554A Active CA2968554C (en) 2014-12-02 2015-12-02 Foldable ladder

Country Status (6)

Country Link
EP (2) EP4273362A3 (zh)
CN (2) CN112459698B (zh)
CA (2) CA3130716C (zh)
ES (1) ES2963810T3 (zh)
MX (2) MX2017007137A (zh)
WO (1) WO2016090041A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD860476S1 (en) 2017-01-04 2019-09-17 Tricam Industries, Inc. Hinge for a multi-position ladder
USD855833S1 (en) 2017-01-04 2019-08-06 Tricam Industries, Inc. Ladder rail
CN108508804B (zh) * 2018-04-18 2019-11-26 陈禄壮 基于步频触发的梯子管理系统
JP2022549815A (ja) * 2019-09-18 2022-11-29 ワーナー シーオー 脚立用のピボット及びロック機構
US20210222492A1 (en) * 2020-01-20 2021-07-22 Little Giant Ladder Systems, Llc Ladders and ladder rungs

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827216A (en) * 1955-05-25 1958-03-18 Leonard B Napolitano Telescopic step or rung ladders
US4182431A (en) * 1978-03-13 1980-01-08 Little Giant Industries Inc. Combination extension and step ladder rungs therefor
BE1004040A6 (fr) * 1989-06-16 1992-09-15 Show Min Liaw Echelle extensible a usages multiples.
CN2122928U (zh) * 1992-06-04 1992-11-25 士元工业股份有限公司 折叠式铝梯定位关节
US5954157A (en) * 1994-10-18 1999-09-21 Fiberlite Technologies, Inc. Fiber/resin composite ladder and accompanying accessories
US5775460A (en) * 1995-02-02 1998-07-07 Stone; Mark James Hinge and ladder
KR100199416B1 (en) * 1995-08-21 1999-06-15 Song In Kweon Hinge for collapsible ladder
US6857503B2 (en) * 2002-02-07 2005-02-22 Tricam Industries, Inc. Convertible ladder
DE20207715U1 (de) * 2002-05-16 2003-09-25 Portuleiter - Produtos Metalicos, Limitada, Foros de Salvaterra Teleskopleiter
US7424933B2 (en) * 2002-05-28 2008-09-16 Norman Miller Ladder assemblies
US6708800B2 (en) 2002-08-02 2004-03-23 Core Distribution, Inc. Extending ladder and associated manufacturing methods
CA2508885C (en) * 2002-11-11 2011-01-18 Wing Enterprises, Inc. Combination ladders, ladder components and methods of manufacturing same
US7140072B2 (en) * 2003-11-11 2006-11-28 Cosco Management, Inc. Lockable ladder hinge
WO2005045172A1 (fr) * 2003-11-11 2005-05-19 Luhao Leng Charniere de localisation pour echelle pliante
CN2660084Y (zh) * 2003-11-11 2004-12-01 冷鹭浩 一种折叠梯定位铰链结构
US8387753B2 (en) 2006-06-30 2013-03-05 Core Distribution, Inc. Ergonomic extendable/retractable ladder
US7316293B2 (en) * 2006-05-17 2008-01-08 Norman William Liefke Extension ladder with improved mechanism
CN201100093Y (zh) * 2007-10-11 2008-08-13 王万兴 一种两用伸缩梯
CN102168521B (zh) * 2007-11-02 2013-07-31 兰普控股私人有限公司 伸缩梯子组件
JP2010024799A (ja) * 2008-07-24 2010-02-04 Bunka Shutter Co Ltd 折り畳み梯子の展開防止構造
US8225906B2 (en) * 2008-08-22 2012-07-24 Core Distribution, Inc. Extendable/retractable ladder
US20100071996A1 (en) * 2008-09-24 2010-03-25 Wen-Hung Huang Collapsible platform ladder
GB2503742B (en) * 2012-07-06 2014-09-03 Teletower Com Ltd Collapsible ladder

Also Published As

Publication number Publication date
MX2017007137A (es) 2017-08-18
CA2968554A1 (en) 2016-06-09
CA2968554C (en) 2022-05-24
EP4273362A3 (en) 2024-01-10
CN112459698B (zh) 2022-01-11
WO2016090041A1 (en) 2016-06-09
EP3227517C0 (en) 2023-09-27
EP4273362A2 (en) 2023-11-08
MX2022009716A (es) 2022-09-09
CN107250479B (zh) 2020-11-13
EP3227517B1 (en) 2023-09-27
CN107250479A (zh) 2017-10-13
ES2963810T3 (es) 2024-04-02
CN112459698A (zh) 2021-03-09
EP3227517A1 (en) 2017-10-11
CA3130716A1 (en) 2016-06-09

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Legal Events

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EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914

EEER Examination request

Effective date: 20210914