GB2348235A - Adjustable extension for ladder leg with swivel foot - Google Patents
Adjustable extension for ladder leg with swivel foot Download PDFInfo
- Publication number
- GB2348235A GB2348235A GB0000333A GB0000333A GB2348235A GB 2348235 A GB2348235 A GB 2348235A GB 0000333 A GB0000333 A GB 0000333A GB 0000333 A GB0000333 A GB 0000333A GB 2348235 A GB2348235 A GB 2348235A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ladder
- leg
- adjustable
- extention
- sloping
- 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
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)
Abstract
A levelling device for a ladder includes two body sections (1, 2) where one body section is secured to the other by bolts (3, 4) and the device is moveably secured to the ladder by bolts (5,6). The device has an adjustable foot (9), made from rubber and fitted to the bottom of an extension leg (7), may swivel relative to the extension leg.. The device may be fitted to one or both ladder legs and to new or existing ladders. The device may also include a spirit level (8).
Description
Adjustable Extention Ladder Leg
This invention relates to an adjustable extention ladder leg.
Standard ladders are well known used commercially or domestically enabling the user to mount it to reach areas normally out of reach. The two legs of the ladder are equal in length so that the ladder remains perpendicular on flat horizontal surfaces rendering the ladder safe to mount.
Uneven, sloping or stepped surfaces render the ladder unsafe for mounting. According to the present invention this adjustable extention ladder leg when attached to either leg of the ladder (externally or internally adapted) it will slide up or down the ladder leg so as to lengthen or shorten one side. This ensures that the ladder in use remains perpendicular and safe during use on an uneven horizontal surface, be it sloping or a stepped surface. A rubber swivel foot which inclines to match any slope renders, through adjusting, the ladder safe and secure. This invention can be incorporated into newly manufactured ladder legs so adjustment to each leg can be made to render the ladder safe on uneven sloping or stepped surfaces.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which:
Figure I shows in perspective the extention ladder leg with its swivel rubber foot which is able to adjust in length and to any inclined footing.
Figure 2 shows a standard ladder with one leg resting on a step and the other suspended the extention ladder leg has been secured in a position to render the ladder perpendicular and safe for mounting.
Figure 3 shows the adjustable extention ladder leg attached to a standard ladder which is being used on an uneven sloping surface the extention leg secures the perpendicular position of the ladder as well as the adjustable swivel rubber foot takes up the angle of the uneven surface.
Figure 4 shows an exploded view of the adjustable extention ladder leg. Its securing system and adjustable swivel rubber foot.
Referring to the drawings, the extention ladder leg consists of two overlapping moveable sections body 1 and 2, reasonably secured to each (by holding bolts 3,4,5 and 6) other for adjusting the width and depth of the unit, fitting any ladder design, by for example a bolt, wing nut or similar means at points 3 and 4. Wing nut bolts with swivel rubber covered plates at 5 and 6, or similar securing levers, secures the desired position of the extention leg 7 on the ladder at the lower end of the extention leg 7 is an adjustable swivel rubber foot at 9. By sliding and position the extention leg body higher up the ladder side, it will not interfere with the ladder use on normal horizontal surfaces.
In order to fit or remove the extention leg body from either leg of the ladder, the bolts, wing nuts or similar securing levers at 5 and 6 can be loosened and the body 1 and 2 then slides off the bottom of the ladder to which it has been attached as shown in Fig 2.
In order to secure the perpendicular position of standard ladder, be it on a stepped, sloping or uneven surface, the extension leg 7 slides up and down to secure an approximate position of correct length by securing the body I and 2 to the ladder by wing nuts or similar levers at stand 6, fine adjustment for correct perpendicular position is done by checking the spirit level bubble at 8 and by fine tuning the length by adjusting the swivel rubber foot at 9.
Claims (8)
- CLAIMS 1 TO 8 1. An adjustable extention leg comprising of two sliding sections to form a securing body around (or internally) one or both ladder legs. The body being adapted to slide up or down either ladder leg so as to lengthen or shorten one side to make the ladder safe and secure perpendicular for mounting on an uneven, sloping or stepped surface. An adjustable swivel rubber foot at the base of the extention leg helps to fine tune the perpendicular position of the ladder on any type or surface.
- 2. An adjustable extention leg is claimed in 1 and 2 in any form of design to lengthen or shorten either or both legs of an existing or newly manufactured ladder, to make it safe and secure for mounting on sloping, uneven or stepped surfaces.
- 3. An adjustable extention leg is claimed in 2 where a catchment means is proved to arrest the sliding up and down of the body thus securing the correct disired position for the required length of the ladderto render the ladder stable and safe for mounting on sloping, uneven or stepped surfaces.
- 4. An adjustable extention leg as claimed in 1 and 2 has an adjustable swivel rubber foot for fine tuning any sloping angle and securing the perpendicular position of the ladder on any sloping, uneven or stepped surface.
- 5. An adjustable extention leg as claimed in 4 has a common spirit level bubble to fine tune the perpendicular position of the ladder to which the extention leg is attached.
- 6. An adjustable extention leg as claimed in 3 can be fitted to either or both legs of a standard ladder.
- 7. An adjustable extention leg as claimed in 3 can be fitted to one or both legs of a newly manufactured ladder depending on design sliding externally or internally and being secured to the ladder leg by a fastening device to maintain the ladder in a perpendicular and secure position.
- 8. An adjustable eOxtention leg substantially as described here on with reference to figures 1-4 of the accompanying drawings.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0000333A GB2348235B (en) | 2000-01-10 | 2000-01-10 | Adjustable extension ladder leg |
AU2001223849A AU2001223849A1 (en) | 2000-01-10 | 2001-01-04 | Adjustable extension ladder leg |
PCT/GB2001/000027 WO2001051756A1 (en) | 2000-01-10 | 2001-01-04 | Adjustable extension ladder leg |
EP01900172A EP1409832A1 (en) | 2000-01-10 | 2001-01-04 | Adjustable extension ladder leg |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0000333A GB2348235B (en) | 2000-01-10 | 2000-01-10 | Adjustable extension ladder leg |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0000333D0 GB0000333D0 (en) | 2000-03-01 |
GB2348235A true GB2348235A (en) | 2000-09-27 |
GB2348235B GB2348235B (en) | 2001-02-07 |
Family
ID=9883344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0000333A Expired - Fee Related GB2348235B (en) | 2000-01-10 | 2000-01-10 | Adjustable extension ladder leg |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1409832A1 (en) |
AU (1) | AU2001223849A1 (en) |
GB (1) | GB2348235B (en) |
WO (1) | WO2001051756A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2364089A (en) * | 2000-06-30 | 2002-01-16 | David Richard Hendrik Veen | Adjustable shelf for ladder |
GB2379476A (en) * | 2001-09-06 | 2003-03-12 | Giuseppe Montano | Ladder levelling device |
US9534443B1 (en) | 2011-12-27 | 2017-01-03 | Robert C. Bogart | Ladder and related methods |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2413146A (en) * | 2004-01-27 | 2005-10-19 | Neville Scott Paul | An extendable leg for attachment to a ladder |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5222575A (en) * | 1989-02-08 | 1993-06-29 | Joseph H. Couch, IIII | Ladder leveling and stabilizing extension and foot |
US5307900A (en) * | 1993-07-30 | 1994-05-03 | Noga Leonard R | Ladder leg extension apparatus |
US5341899A (en) * | 1994-02-03 | 1994-08-30 | Casamento Michael J | Anti-skid and leveling device for ladders |
US5551529A (en) * | 1994-11-21 | 1996-09-03 | Molitor; Daniel J. | Ladder stabilizer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2318017A (en) * | 1940-04-29 | 1943-05-04 | Charles O Moore | Antislip foot |
US4069893A (en) * | 1976-11-18 | 1978-01-24 | Charles David Blackstone | Ladder stabilizer and leveler |
US4249638A (en) * | 1979-12-26 | 1981-02-10 | Albert Fernandez | Ladder extension apparatus |
CA1188276A (en) * | 1982-02-12 | 1985-06-04 | Frank Shandala | Ladder attachment |
US5476153A (en) * | 1994-03-25 | 1995-12-19 | Dickerson; Craig A. | Ladder leveling apparatus |
-
2000
- 2000-01-10 GB GB0000333A patent/GB2348235B/en not_active Expired - Fee Related
-
2001
- 2001-01-04 AU AU2001223849A patent/AU2001223849A1/en not_active Abandoned
- 2001-01-04 EP EP01900172A patent/EP1409832A1/en not_active Withdrawn
- 2001-01-04 WO PCT/GB2001/000027 patent/WO2001051756A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5222575A (en) * | 1989-02-08 | 1993-06-29 | Joseph H. Couch, IIII | Ladder leveling and stabilizing extension and foot |
US5307900A (en) * | 1993-07-30 | 1994-05-03 | Noga Leonard R | Ladder leg extension apparatus |
US5341899A (en) * | 1994-02-03 | 1994-08-30 | Casamento Michael J | Anti-skid and leveling device for ladders |
US5551529A (en) * | 1994-11-21 | 1996-09-03 | Molitor; Daniel J. | Ladder stabilizer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2364089A (en) * | 2000-06-30 | 2002-01-16 | David Richard Hendrik Veen | Adjustable shelf for ladder |
GB2379476A (en) * | 2001-09-06 | 2003-03-12 | Giuseppe Montano | Ladder levelling device |
US9534443B1 (en) | 2011-12-27 | 2017-01-03 | Robert C. Bogart | Ladder and related methods |
Also Published As
Publication number | Publication date |
---|---|
GB2348235B (en) | 2001-02-07 |
GB0000333D0 (en) | 2000-03-01 |
WO2001051756A1 (en) | 2001-07-19 |
AU2001223849A1 (en) | 2001-07-24 |
EP1409832A1 (en) | 2004-04-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20080110 |
|
S27 | Amendment of specification after grant (sect. 27/patents act 1977) |
Free format text: APPLICATION FILED; APPLICATION TO AMEND SPECIFICATION UNDER SECTION 27 FILED ON 29 JULY 2020 |
|
S27 | Amendment of specification after grant (sect. 27/patents act 1977) |
Free format text: APPLICATION NOT PROCEEDED WITH; APPLICATION TO AMEND SPECIFICATION UNDER SECTION 27 FILED ON 29 JULY 2020 NOT PROCEEDED WITH ON 26 NOVEMBER 2020 |