WO2000059344A1 - Systeme autostabilisant - Google Patents

Systeme autostabilisant Download PDF

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Publication number
WO2000059344A1
WO2000059344A1 PCT/AU2000/000273 AU0000273W WO0059344A1 WO 2000059344 A1 WO2000059344 A1 WO 2000059344A1 AU 0000273 W AU0000273 W AU 0000273W WO 0059344 A1 WO0059344 A1 WO 0059344A1
Authority
WO
WIPO (PCT)
Prior art keywords
foot
tπgger
self
adjustable foot
adjustable
Prior art date
Application number
PCT/AU2000/000273
Other languages
English (en)
Inventor
Mark Gwynneth
Original Assignee
Mark Gwynneth
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 AUPP9601A external-priority patent/AUPP960199A0/en
Priority claimed from AUPQ1263A external-priority patent/AUPQ126399A0/en
Priority claimed from AUPQ3681A external-priority patent/AUPQ368199A0/en
Application filed by Mark Gwynneth filed Critical Mark Gwynneth
Priority to AU34100/00A priority Critical patent/AU741642B2/en
Priority to EP00912269A priority patent/EP1121038A4/fr
Publication of WO2000059344A1 publication Critical patent/WO2000059344A1/fr
Priority to AU2002300081A priority patent/AU2002300081A1/en

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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B91/00—Feet for furniture in general
    • A47B91/02—Adjustable feet
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B91/00—Feet for furniture in general
    • A47B91/16—Self-levelling legs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks

Definitions

  • This mvennon relates to a self-stabihsmg system It has particular but not exclusive apphcatton to a self-stabihsmg and self-locking mechanism for an assembly supported on a surface by a four-based structure of legs or feet It has particular but not exclusive apphcatton to self-stabihsmg mechanisms for tables, ladders, stools, trestles, and numerous other four-footed structures, includmg. but not limited to, all others further identtfied in this document
  • Tables and four-footed structures m general are often subject to uneven floors or various uneven supporting surfaces, causing them to wobble to some degree Too often the solution involves placmg cardboard or some form of shim under one of the feet This is an annoyance and only a temporary solutton This is a problem that has needed an effective means of correcting it
  • the new self-stabihsmg system explained in this document proposes a solution that is effective in all aspects of operation in four footed structures
  • This new invention is a built in. self-stabilising system that allows automatic adjustment and locking, ensuring all four feet are firmly maintained on the surface
  • the advantages and benefits of the self-stabihsmg system are evident in the unique action of the trigger foot and the adjustable foot
  • the adiustable foot, once locked into position, will remain locked providing that either the adjustable foot or the trigger foot remain weighted
  • This feature also makes the self-stabihsmg system suitable for ladders ensuring that the system stays locked even if weight is removed from either of the two feet
  • the self-stabilising system solves the problem of wobble m four footed structures
  • the present invention has other benefits It is exceptionally easy to use with the t ⁇ gger foot and the adiustable foot operating automatically
  • FIG 1 A is the basic p ⁇ nciple of support arrangement on a four footed structure
  • FIG IB is the basic principle of support arrangement on a four footed structure where two sets of self stabilising systems are utilised
  • FIGs 2 A & 2B illustrate the self binding principle
  • FIGs 3 A & 3B illustrate the two self binding positions.
  • FIGs 4 A through 4H are schematic diagrams illustrating the va ⁇ ous arrangements of the crank operated binding arm mechanism
  • FIGs 5 A through 5H are schematic diagrams illustrating additional arrangements of the crank operated binding arm mechanism.
  • FIGs 6 A through 6H are schematic diagrams illustrating the va ⁇ ous arrangements of the slot operated binding arm mechanism
  • FIG 7A is a sectioned elevation view thiough the centre and adjustable foot portion of a standard pedestal
  • FIG 7B is a plan view of the underside of a standard pedestal.
  • FIG 7C is a sectioned elevation view through the t ⁇ gger foot portion of a standard pedestal
  • FIG 7D is a perspective view of a bracket utilised m the standard pedestal.
  • FIG 8 A is a sectioned elevation view through the centre and adjustable foot portion of a slim pedestal
  • FIG 8B is a plan view of the underside of a slim pedestal.
  • FIG 8C is a sectioned elevation view through the t ⁇ gger foot portion of a slim pedestal.
  • FIG 8D is a sectioned elevation view through the centre and t ⁇ gger foot portion of a slnn pedestal.
  • FIG 8E illustrates the slotted actuation bar utilised m a slim pedestal
  • FIG 9A is a sectioned elevation view through the centre and adjustable foot portion of a elongated footed pedestal
  • FIG 9B is a sectioned elevation view through the t ⁇ gger foot portion of a elongated footed pedestal
  • FIG 9C is a plan view of the underside of a elongated legged pedestal.
  • FIG 10A illustrates the slotted actuation bar utilised in a corner legged table
  • FIG 1 OB is a sectioned elevation view through two legs and cross frame of a corner legged table.
  • FIG IOC is a perspective view of a corner legged table.
  • FIG 11A is a perspective view of a folding table.
  • FIG 1 IB is a sectioned elevation view through two legs and cross frame of a folding table.
  • FIG 12A is an elevation view illustrating the lower portion of the legs on one side of a builder's trestle
  • FIG 12B is a schematic perspective view of a builder's tresde
  • FIG 13A is an elevation view illustrating the system with parallel feet pivots
  • FIG 13B is a perspective view of a table with an ' inverted T base" utilising the parallel feet pivot system.
  • FIG 14 A is a sectioned elevation view through the centre and adjustable foot portion of a t ⁇ gger foot with aperture pedestal
  • FIG 14B is a plan view of the underside of a t ⁇ gger foot with aperture pedestal
  • FIG 14C is a sectioned elevation view through the t ⁇ gger foot portion of a t ⁇ gger foot with aperture
  • FIG 14D is a perspective view of a pedestal base table.
  • FIG 14E through 14H are schematic diagrams illustrating the possible arrangements of the adjustable foot and t ⁇ gger foot where the foot pivots are at 90 degrees to each other.
  • FIG 1 A is a plan view schematic diagram illustrating the principle arrangement of the supports on a four footed structure
  • the adjustable foot I and the t ⁇ gger foot 2 are located on the same side of the structure This applies to all applications of the self-stabilising system in a four footed structure Foot 3 and foot 4 are both fixed relative to the strucmre This system provides stabilisation only
  • FIG IB is a plan view schematic diagram illustrating the p ⁇ nciple arrangement where two sets of self-stabihsmg systems are utilised
  • the locking of adjustable foot 1 is mitiated by t ⁇ gger foot 2. while the lockmg of adjustable foot 3 is imtiated by t ⁇ gger foot 4
  • Two sets allow the angle of the strucmre. relative to the surface it resides upon, to be altered
  • FIG 2 A & 2B depict the crank-arm version of three basic mechanism arrangements to illustrate the method of friction bmdmg employed to lock the adjustable foot
  • the bmdmg arm 1 is attached to the structure, not shown, by pivot pm 2
  • a locking rod 3 connects with the adjustable foot, not shown, and passes through the aperture 4 m the binding arm
  • the locking rod is free to slide through the aperture, as indicated by arrow 5 when the axis of the aperture and the locking rod are aligned
  • Retraction of the t ⁇ gger foot, not shown causes the t ⁇ gger rod 6 to move in the direction of arrow 7.
  • slightly rotating the binding arm about pm 2 This causes the axis of the aperture to become non-aligned with the axis of the locking rod and creates the binding action required to prevent movement of the locking rod in direction of arrow 8
  • FIG 3A & 3B depict the actuation bar version of three basic mechanism arrangements to illustrate the utilisation of the two bmdmg positions of the binding arm
  • the binding ami 1 is attached to the strucmre. not shown, by pin 2
  • the actuation bar 3 is linked to the t ⁇ gger foot not shown, and limited to linear motion by p 2 passing through the elongated hole 4 Movement of the acmation bar in direction of arrow 5 will cause the binding arm to slightly rotate to one of the binding positions and preventing movement of the locking rod 6 in direction of arrow 7 Movement of the acmation bar m the direction of arrow 8 will prevent movement of the locking rod direction of arrow 9
  • These two bmdmg positions can be utilised to provide bmdmg on extension as well as bmdmg on retraction of the adjustable foot
  • FIGs 4A through 4H and FIGs 5A through 5H are schematic diagrams showing va ⁇ ous ways the crank actuated bmdmg arm. lockmg rod. and t ⁇ gger foot rod can be arranged
  • the linear and curved arrows indicate the direction the components move m when the structure is being placed
  • the preferred arrangement for the standard pedestal is that depicted m FIG 4C however, this patent also claims the ⁇ ghts to all the arrangements detailed
  • FIGs 6A through 6H are schematic diagrams showing va ⁇ ous ways the slot actuated binding arm. locking rod. and t ⁇ gger foot bar can be laved out
  • the linear and curved arrows mdicate the direction the components move m when the strucmre is being placed
  • the preferred arrangement for the slim pedestal is that depicted in FIG 6D. however, this patent also claims the ⁇ ghts to all the arrangements detailed
  • FIG 7A is a sectioned elevation showing the pedestal centre and adjustable foot hous g
  • FIG 7B is a plan view of the
  • FIG 7C is a sectioned elevation of the t ⁇ gger foot housmg
  • FIG 7D is a three dimensional view of a bracket
  • the adjustable foot 1 pivots on pm 2 which is located m the pedestal base by the mounting block 3
  • the locking rod 4 engages with the adjustable foot 1. passes through a hole 18 in a bracket 5.
  • the adjustable foot 1 is biased to extend by spring 7 which is located on the lockmg rod 4
  • the bmdmg arm 8 pivots on bolt 9 which is located m the body of the pedestal base
  • the t ⁇ gger foot 10 pivots on pin 1 1 which is located m the pedestal base bv the mountmg block 12
  • the acmation rod 13 engages with the t ⁇ gger foot 10 and has a reduced diameter at one end for location in the bmdmg arm 8 Sp ⁇ ng 14. which is located at one end by a tab 19 on bracket 5 and bv the portion of the acmation rod 13 which protrudes through the binding arm 8.
  • FIG 8A is a sectioned elevation view through the pedestal base showing detail of the locking mechanism and the adjustable foot
  • FIG 8B is a plan view showing the underside of the base
  • FIG 8C & 8D are sectioned elevation views through the t ⁇ gger foot housmg
  • Figure 8E shows the actuation bar by itself
  • the adjustable foot 1 is mounted to the structure by the bracket 2 which contains pivot pm 3
  • the locking rod 4 is attached to the adjustable foot 1 by pm 5 which is welded onto the top of the lockmg rod 4
  • the locking rod passes through the aperture 6 located in the bmdmg arm 7
  • the binding arm pivots on bolt 8 which is located m the body of the pedestal base
  • a p 9 is attached to the other end of the binding arm 7 and this pin engages with the angled slot 16 m the acmation bar 10
  • the actuation bar is
  • FIGs 9A to 9C The preferred mechanism for a pedestal with elongated feet utilises a t ⁇ gger leg with binding aperture system and is illustrated FIGs 9A to 9C With the elongated feet design, the adjustable leg and the t ⁇ gger leg pivot on p s close to the centre of the pedestal
  • FIG 9A is a sectioned elevation view
  • FIG 9B is a sectioned elevation view through the centre of the pedestal and the t ⁇ gger leg 2
  • FIG 9C is a plan view of the centre of the pedestal from underneath Continuing with reference to all these views, the adjustable leg pivots on pm 3 located the base side flanges 14 of the base A linkage rod 4 connects between the adjustable leg 1 and the bell-crank
  • the bell-crank is attached to the pedestal base 8 by pivot bolt 9
  • the lockmg rod 10 is attached to the bell-crank 5 by pin 1 1 and passes through the aperture piece 12 which is secured to the t ⁇ gger leg
  • the t ⁇ gger leg pivots on pm 13 located m the base side flanges
  • the adjustable leg is free to move when the axis 14 of the aperture 12 located on the t ⁇ gger leg. is aligned with the axis of the lockmg rod Bmdmg between the t ⁇ gger leg aperture 12 and the lockmg rod locks the adjustable leg This is designed to lock when the t ⁇ gger leg is at the same angle as the fixed legs relative to the pedestal stem
  • the preferred mechanism for a four legged table as depicted in FIG IOC. utilises a b dmg arm which is actuated by a slotted bar as illustrated m FIGs 10A & 10B
  • the adjustable foot 1 and the t ⁇ gger foot 2 both move Iongitudmallv relative to their respective legs 3 and 4
  • the locking rod 5 is attached to or part of. the adjustable foot and concealed within the leg 3
  • a t ⁇ gger foot rod 6 is attached to. or part of, the t ⁇ gger foot 2 and concealed within leg 4
  • the binding arm 7 attached to the frame by pivot 8.
  • the bmdmg arm 7 and the lever 11 could both contain crank arms connected with a linkage rod as utilised in the telescopic foldmg table example listed below
  • FIG 1 IB The preferred mechanism for a telescopic folding table, as depicted in FIG 1 1 A. is illustrated in FIG 1 IB
  • the adjustable leg 1 and the t ⁇ gger leg 2 move longitudmally relative to the strucmre 's legs
  • the locking rod 3 is attached at the bottom of the adjustable leg and the t ⁇ gger rod 4 similarly attached to the t ⁇ gger leg
  • the bmdmg arm 5 is attached to the frame by pivot 6.
  • lever 7 is attached to the frame by pivot 8
  • the bindmg arm and the lever are connected by linkage rod 9
  • the preferred mechanism for a builder's trestle is a telescopic system with an external mechanism as detailed in FIG 12A. which is an elevation view of the lower portion of the trestle showing the self-
  • the larger upper diameter serves to limit the extension of the adjustable leg 1
  • the bmdmg arm 3 is mounted to the trestle frame by pivot 4 and is connect to lever 5 by linkage rod 6
  • Lever 5 is mounted to the trestle frame by pivot 7 and engages with the t ⁇ gger leg 8 by having the end of the lever located through a hole in the side of the t ⁇ gger leg 8
  • the t ⁇ gger-leg is free to slide mside the tube of the trestle frame
  • the adjustable leg 1 retracts until the t ⁇ gger leg 8 also makes contact with the surface
  • a small retraction of the t ⁇ gger leg causes the bmdmg arm 3 to slightly rotate and initiate friction bmdmg of the adjustable leg 1
  • a small extension of the t ⁇ gger leg 8 moves the lockmg mechanism to the binding on extension position and thus
  • FIG 12B is a sketch of a trestle showing the position of two sets of self locking systems
  • the lower ends of all four legs are telescopic Leg 9 triggers the lockmg of adjustable leg 10. while leg 11 triggers the locking of adjustable leg 12
  • FIGs 13A & 13B. is utilised to illustrate the mechanism arrangement
  • the adjustable foot 1 is attached to the strucmre by pivot 2
  • the locking rod 3. connected to the adjustable foot by pivot 4.
  • the t ⁇ gger foot is attached to the structure by pivot 7 Gravity or sp ⁇ ngs 8 and 9 may be utilised to bias both the adjustable foot and the t ⁇ gger foot to extend when free to do so Free from a surface the t ⁇ gger extends until the lockmg mechanism is in the bindmg on extension position When being placed upon a surface the t ⁇ gger foot 6 retracts until the locking mechanism moves to the bmdmg on retraction position Between these two locking positions the locking rod 3 is free to pass through the aperture 5, permitting the adjustable foot 1 to extend if necessary
  • the adjustable foot can extend much further than the t ⁇ gger foot the latter s rotation being limited to a relatively small amount by the clearance between the locking rod and the aperture
  • the same mechanism layout, but placed in a different structure, may be applied for stabilising va ⁇ ous structures or appliances such as washing machines and refrigerators
  • FIG 14A is a sectioned elevation showing the pedestal centre and adjustable foot housmg
  • FIG 14B is a plan view of the underneath side of the pedestal base
  • FIG 14C is a sectioned elevation of the t ⁇ gger foot housmg
  • the adjustable foot 1 pivots on p 2 which is located in the pedestal base by the mounting block 3
  • the linkage rod 4 connects the adjustable foot with the bell-crank 5 located near the centre of the pedestal base by pivot bolt 6
  • the lockmg rod 7 connects to the bell-crank 5 and passes through the locking aperture 8 which is part of the t ⁇ gger foot 9
  • the t ⁇ gger-foot is mounted to the structure by the bracket 10 which has pivot pm 11 welded to it Two sp ⁇ ngs.
  • FIGs 14F through 14H are alternative ways which the t ⁇ gger foot and adjustable foot can be arranged and are claimed by this invention
  • This invention provides an alternative and an improvement to known systems and methods for self-stabilising tables, trestles, and any four footed structure employing this self-stabilising system
  • the invention exists as a stabilising assembly and when placed on any surface, even or uneven, it is self- adjusting and self-stabilising It can be built into a plurality of supports, meaning two out of four legs/feet m a typical table, or most four legged structures In a four footed strucmre. it has two fixed feet, an adjustable foot, and a t ⁇ gger foot Its uniqueness is a result of the principle of its action, consisting of an adjustable foot a means of lockmg the adjustable foot, and a t ⁇ gger foot that initiates the locking action upon the adjustable foot
  • the lockmg action in general, occurs when the axis of the lockmg rod and the axis of the aperture arm become non-parallel to each other, creating a f ⁇ ction-bindmg action
  • the ratio of leverage on the lockmg mechamsm by the adjustable foot m relation to that of the t ⁇ gger foot is designed such that the final retraction of the adjustable foot equals that of the t ⁇ gger foot, beginning when the locking action commences and the structure (table) is be g secured m place, with the two fixed feet already firmly in contact with the surface

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention porte sur un ensemble permettant de mettre à niveau et/ou de stabiliser un appareil supporté sur une surface irrégulière sur une pluralité de supports. Cet ensemble comprend: un élément (1) réglable placé sur l'un des supports et adoptant une position dans laquelle il est en contact avec la surface lorsque l'appareil est supporté sur celle-ci; un organe de verrouillage (3) permettant de verrouiller l'élément de réglable pour l'empêcher de se déplacer par rapport à un support, et un élément (2) de déclenchement placé sur un autre support et effectuant le verrouillage de l'organe lorsqu'il est actionné au moment de son contact avec la surface lorsque l'appareil est supporté sur celle-ci.
PCT/AU2000/000273 1999-04-01 2000-03-31 Systeme autostabilisant WO2000059344A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU34100/00A AU741642B2 (en) 1999-04-01 2000-03-31 Self stabilising system
EP00912269A EP1121038A4 (fr) 1999-04-01 2000-03-31 Systeme autostabilisant
AU2002300081A AU2002300081A1 (en) 1999-04-01 2002-07-08 Self stabilising system

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AUPP9601 1999-04-01
AUPP9601A AUPP960199A0 (en) 1999-04-01 1999-04-01 Levelling and/or stabilising system
AUPQ1263 1999-06-29
AUPQ1263A AUPQ126399A0 (en) 1999-06-29 1999-06-29 Leveling and/or stabilising system
AUPQ3681A AUPQ368199A0 (en) 1999-10-28 1999-10-28 Leveling and/or stabilising system
AUPQ3681 1999-10-28

Publications (1)

Publication Number Publication Date
WO2000059344A1 true WO2000059344A1 (fr) 2000-10-12

Family

ID=27158134

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000273 WO2000059344A1 (fr) 1999-04-01 2000-03-31 Systeme autostabilisant

Country Status (2)

Country Link
EP (1) EP1121038A4 (fr)
WO (1) WO2000059344A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368090A (en) * 2000-08-16 2002-04-24 Andrew Leveridge A stabilising support device
WO2003070059A1 (fr) * 2002-02-21 2003-08-28 Royal College Of Art Support auto-stabilisateur
WO2005034680A1 (fr) * 2003-10-10 2005-04-21 Shiranor Investments Limited Ensemble support autostable pour element de mobilier
US9534443B1 (en) 2011-12-27 2017-01-03 Robert C. Bogart Ladder and related methods
WO2018115561A1 (fr) * 2016-12-22 2018-06-28 Ortega Frances Rafael Stabilisateur pour meubles
CN110513581A (zh) * 2019-08-21 2019-11-29 南昌大学 一种滑坡监测用适用不同角度平面的检测仪支撑装置
CN111542246A (zh) * 2017-09-27 2020-08-14 Acht & Acht有限责任公司 台座
WO2020221946A1 (fr) * 2019-04-29 2020-11-05 RODRÍGUEZ BREA, José Carlos Dispositif stabilisateur pour surfaces de sustentation

Citations (15)

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Publication number Priority date Publication date Assignee Title
US467811A (en) 1892-01-26 Construction of legged articles
US2555036A (en) * 1946-07-24 1951-05-29 Har Jo Ind Res Corp Equalizer ladder base
US2787087A (en) 1955-03-28 1957-04-02 Warren C Whitman Self-adjusting quadrupedal support for tables and the like
US2835427A (en) 1954-01-06 1958-05-20 John A Balcar Ladder levelling means
US2890824A (en) 1954-08-26 1959-06-16 Richard F Derby Leg length adjusting apparatus
US3102606A (en) * 1961-02-21 1963-09-03 Hopfeld Henry Adjustable legs for ladders
US3117392A (en) 1961-12-29 1964-01-14 Bela B Junkunc Self-leveling devices
US3204906A (en) 1964-04-16 1965-09-07 Henderson Robert Stabilized four legged table
US3878918A (en) * 1973-08-13 1975-04-22 Anthony G Basile Adjustable ladder
US4095671A (en) * 1974-02-01 1978-06-20 Utility Products, Inc. Adjustable self-locking level support
US4128139A (en) * 1977-12-07 1978-12-05 Cook Sr Jack E Automatic levelling and locking ladder
US4627516A (en) * 1986-01-02 1986-12-09 Harry V. Moore Self-leveling ladder construction
AU3600189A (en) 1988-06-09 1989-12-14 White Consolidated Industries, Inc. Retractable self-leveling leg assembly
US5690303A (en) 1996-06-24 1997-11-25 Winters-Gresham Partnership Self-stabilizing base for a table
AU2371197A (en) * 1997-02-13 1998-08-20 Werner International Poc Gmbh Levelling device for a ladder

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US467811A (en) 1892-01-26 Construction of legged articles
US2555036A (en) * 1946-07-24 1951-05-29 Har Jo Ind Res Corp Equalizer ladder base
US2835427A (en) 1954-01-06 1958-05-20 John A Balcar Ladder levelling means
US2890824A (en) 1954-08-26 1959-06-16 Richard F Derby Leg length adjusting apparatus
US2787087A (en) 1955-03-28 1957-04-02 Warren C Whitman Self-adjusting quadrupedal support for tables and the like
US3102606A (en) * 1961-02-21 1963-09-03 Hopfeld Henry Adjustable legs for ladders
US3117392A (en) 1961-12-29 1964-01-14 Bela B Junkunc Self-leveling devices
US3204906A (en) 1964-04-16 1965-09-07 Henderson Robert Stabilized four legged table
US3878918A (en) * 1973-08-13 1975-04-22 Anthony G Basile Adjustable ladder
US4095671A (en) * 1974-02-01 1978-06-20 Utility Products, Inc. Adjustable self-locking level support
US4128139A (en) * 1977-12-07 1978-12-05 Cook Sr Jack E Automatic levelling and locking ladder
US4627516A (en) * 1986-01-02 1986-12-09 Harry V. Moore Self-leveling ladder construction
AU3600189A (en) 1988-06-09 1989-12-14 White Consolidated Industries, Inc. Retractable self-leveling leg assembly
US5690303A (en) 1996-06-24 1997-11-25 Winters-Gresham Partnership Self-stabilizing base for a table
AU2371197A (en) * 1997-02-13 1998-08-20 Werner International Poc Gmbh Levelling device for a ladder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1121038A4 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368090A (en) * 2000-08-16 2002-04-24 Andrew Leveridge A stabilising support device
GB2368090B (en) * 2000-08-16 2004-06-23 Andrew Leveridge A stabilising support device
WO2003070059A1 (fr) * 2002-02-21 2003-08-28 Royal College Of Art Support auto-stabilisateur
WO2005034680A1 (fr) * 2003-10-10 2005-04-21 Shiranor Investments Limited Ensemble support autostable pour element de mobilier
US7677524B2 (en) 2003-10-10 2010-03-16 Hedera Ab Self-stabilizing support assembly for an item furniture
US9534443B1 (en) 2011-12-27 2017-01-03 Robert C. Bogart Ladder and related methods
WO2018115561A1 (fr) * 2016-12-22 2018-06-28 Ortega Frances Rafael Stabilisateur pour meubles
CN111542246A (zh) * 2017-09-27 2020-08-14 Acht & Acht有限责任公司 台座
CN111542246B (zh) * 2017-09-27 2022-01-11 Acht & Acht有限责任公司 台座
WO2020221946A1 (fr) * 2019-04-29 2020-11-05 RODRÍGUEZ BREA, José Carlos Dispositif stabilisateur pour surfaces de sustentation
CN110513581A (zh) * 2019-08-21 2019-11-29 南昌大学 一种滑坡监测用适用不同角度平面的检测仪支撑装置

Also Published As

Publication number Publication date
EP1121038A1 (fr) 2001-08-08
EP1121038A4 (fr) 2002-07-24

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