CA2032232A1 - Dispositif de mise de niveau verrouillable pour echelles - Google Patents

Dispositif de mise de niveau verrouillable pour echelles

Info

Publication number
CA2032232A1
CA2032232A1 CA2032232A CA2032232A CA2032232A1 CA 2032232 A1 CA2032232 A1 CA 2032232A1 CA 2032232 A CA2032232 A CA 2032232A CA 2032232 A CA2032232 A CA 2032232A CA 2032232 A1 CA2032232 A1 CA 2032232A1
Authority
CA
Canada
Prior art keywords
ladder
locking means
levelling device
tubular member
ball chain
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.)
Granted
Application number
CA2032232A
Other languages
English (en)
Other versions
CA2032232C (fr
Inventor
Walter Sturm
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.)
FN ENTERPRISES Inc
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of CA2032232A1 publication Critical patent/CA2032232A1/fr
Application granted granted Critical
Publication of CA2032232C publication Critical patent/CA2032232C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • E06C7/44—Means for mounting ladders on uneven ground

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
CA002032232A 1990-07-19 1990-12-13 Dispositif de mise de niveau verrouillable pour echelles Expired - Fee Related CA2032232C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/554,430 US5007503A (en) 1990-07-19 1990-07-19 Ladder levelling device with locking means
US07/554,430 1990-07-19

Publications (2)

Publication Number Publication Date
CA2032232A1 true CA2032232A1 (fr) 1992-01-20
CA2032232C CA2032232C (fr) 1994-04-19

Family

ID=24213303

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002032232A Expired - Fee Related CA2032232C (fr) 1990-07-19 1990-12-13 Dispositif de mise de niveau verrouillable pour echelles

Country Status (2)

Country Link
US (1) US5007503A (fr)
CA (1) CA2032232C (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490648A (en) * 1993-06-07 1996-02-13 Cullen; Christopher P. Mechanical stabilizer
US6959785B1 (en) 2003-10-24 2005-11-01 Chilton Wade J Stabilizing system for ladders and scaffolding
US6948591B2 (en) * 2003-12-12 2005-09-27 Jon Robert Scott Support apparatus or accessory for a ladder
US20080264724A1 (en) * 2007-04-26 2008-10-30 Louisville Ladder Inc. Attic ladder
WO2010119053A1 (fr) * 2009-04-14 2010-10-21 Eye2Z Aps Mise à niveau de patte
GB2481449A (en) * 2010-06-25 2011-12-28 Warrentech Ltd A levelling device
GB2491132A (en) * 2011-05-23 2012-11-28 Steve Evans Balancer with self-levelling legs
US9322215B2 (en) 2013-04-02 2016-04-26 Jershon, Inc. Ladder leveler apparatus
US10161185B2 (en) * 2014-01-23 2018-12-25 Bigfoot Ladder Systems, Llc Ladder leveling and stabilizing assembly

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552941A (en) * 1946-04-15 1951-05-15 Russel C Courtney Ladder support
US2598875A (en) * 1951-04-09 1952-06-03 Kenneth Billingsly Hydraulic assembly for adjustable ladder leg extension
US3102606A (en) * 1961-02-21 1963-09-03 Hopfeld Henry Adjustable legs for ladders
US3090466A (en) * 1961-07-05 1963-05-21 Allen J Wright Slope support compensators for ladders
US3215383A (en) * 1962-06-22 1965-11-02 Ind Ladder Company Inc Self-leveling support
BE788188A (fr) * 1972-02-10 1973-02-28 Sturm Walter Dispositif pour le reglage en longueur, d'une paire de pieds, d'appuis ou de montants, par exemple d'une echelle
CH554496A (fr) * 1972-05-12 1974-09-30 Test Sa D Etudes Tech Support a pieds a calage automatique.
US4095671A (en) * 1974-02-01 1978-06-20 Utility Products, Inc. Adjustable self-locking level support
US4497390A (en) * 1983-05-23 1985-02-05 Wilson Frederick D Self-adjusting ladder
US4770275A (en) * 1985-05-29 1988-09-13 Williams Patrick Y Leveller for ladders and other apparatus

Also Published As

Publication number Publication date
US5007503A (en) 1991-04-16
CA2032232C (fr) 1994-04-19

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed