US20140001320A1 - Furniture levelling device - Google Patents

Furniture levelling device Download PDF

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Publication number
US20140001320A1
US20140001320A1 US14/000,126 US201214000126A US2014001320A1 US 20140001320 A1 US20140001320 A1 US 20140001320A1 US 201214000126 A US201214000126 A US 201214000126A US 2014001320 A1 US2014001320 A1 US 2014001320A1
Authority
US
United States
Prior art keywords
ramps
pawl
ratchet
upper member
ramp
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.)
Abandoned
Application number
US14/000,126
Other languages
English (en)
Inventor
Keith Gild
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.)
Individual
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 US20140001320A1 publication Critical patent/US20140001320A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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

Definitions

  • This invention relates to a device for adjusting the effective length of a leg of a multi-legged table and particularly a four-or-more legged table; but is also applicable to other articles of furniture such as beds, chairs and the like.
  • Cam mechanisms have been provided which are actuatable with the foot thereby to raise or lower a leg but the perfect position may be lost due to slight movement of the table or of the mechanism.
  • each leg is telescoping, the inner tubes having keyways and snap locking arrangement in the bottom end of each tube.
  • a dowel pin is provided that is releasable by depressing, sliding the outer tube and snapping the dowel pin into a hole when the length is correct.
  • a foot-adjustable leveller has a threaded bolt for upward insertion into the end of a leg.
  • a foot is formed at the base with a disc that can be rotated by foot to raise or lower the bolt with resulting adjustment of the device.
  • a modification of the latter invention is the provision of hydraulic or pneumatic means to be located between the upper and the lower members so that a degree of automatic adjustment is possible but the hydraulic or pneumatic means tends to be overcome by changes in the pressure being applied to the table.
  • a device for adjusting the effective length of a leg of a table or other article of furniture includes an upper and a lower member that are relatively rotatable and are biased apart by spring means, the upper member being associated with a first ramp or ramps that are directed downwards to constitute a wall or walls spaced apart from a second ratchet ramp/s associated with the lower member, the upper member including one or more pawls adapted to run in the channel between the ramps, the pawl/s including a formation adapted to engage the ratchet when the desired effective length of the leg plus device has been adjusted.
  • the pawl/s may include a first smooth or curved zone to provide minimum friction with the first ramp and a pointed zone for engagement with the ratchet.
  • the pawl/s may be located on the inside of the upper member and may be integrally moulded therewith.
  • the device includes an intermediate member that includes the first ramp/s, and that is non-rotatable with the lower member.
  • two or more corresponding ramps are provided on each of the members and in a specific example three identical and connecting ramps are provided in series on each member in the configuration of saw teeth if laid flat, as will be explained in more detail below. Gaps or passageways are provided to permit the pawls to pass into the series of channels during assembly.
  • FIG. 1 is an exploded perspective view of a device according to the invention
  • FIG. 2 is an angled under view of the partly assembled device
  • FIG. 3 is an angled side view of FIG. 2 .
  • FIG. 4 is a sectional side view of the device
  • FIG. 5 is a simulated laid out flat view of the series of channels between the ramps.
  • the device of the embodiment includes an upper member 10 , a lower member 12 and an intermediate member 14 .
  • the upper member has a larger inside diameter than the intermediate and the lower members and is able to be rotated by virtue of the knurls 16 .
  • the intermediate member has a hollow annulus 18 that receives the lower portion of a spring 20 that is accommodated in the upper member as shown in FIG. 4 .
  • a series of ramps 22 depend downwardly from the intermediate member and reference is directed to FIG. 5 in this respect.
  • the lower member also has a series of ramps 24 that are ratcheted, and reference is again directed to FIG. 5 .
  • Pawls 25 extend through the openings 26 in the intermediate member so that the pawls can be located in the channels defined between the ramps 22 of the upper member and 24 of the lower member.
  • the assembled device is secured into a formation 28 associated with a leg of a table by means of a bolt element 30 , and the members are joined by means of a nut-and-bolt (not shown) or other means of joining. It will be appreciated that only one leg of a four-legged table or other furniture need to be adjusted and it will also be appreciated that dummy devices may be provided for the other three legs for aesthetic purposes.
  • the mass of the table as exerted through the formation 24 thereby causing the pawls to rise out of the ratchet and to travel along the ramps 22 of the upper member until the base of the lower portion contacts the floor when the pawls will fall into the respective ratchet. If the situation involves a raised irregularity of the floor and pawls will be released from the ratchets and move along the ramps 22 to the position of rest of the device.
  • the upper member may be rotated to secure the same position.
  • the ramps are laid out flat for descriptive purposes. If the upper member is rotated the pawl shown will first move from the position 30 to a position 32 and thence will fall into the lowermost position in the next channel 34 .

Landscapes

  • Legs For Furniture In General (AREA)
US14/000,126 2011-02-18 2012-02-16 Furniture levelling device Abandoned US20140001320A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA2011/00454 2011-02-18
ZA201100454 2011-02-18
PCT/ZA2012/000008 WO2012112996A1 (en) 2011-02-18 2012-02-16 Furniture levelling device

Publications (1)

Publication Number Publication Date
US20140001320A1 true US20140001320A1 (en) 2014-01-02

Family

ID=46672981

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/000,126 Abandoned US20140001320A1 (en) 2011-02-18 2012-02-16 Furniture levelling device

Country Status (8)

Country Link
US (1) US20140001320A1 (pt)
EP (1) EP2675322A4 (pt)
CN (1) CN103402398B (pt)
AU (1) AU2012219281A1 (pt)
BR (1) BR112013021031A2 (pt)
CA (1) CA2827667C (pt)
CL (1) CL2013002375A1 (pt)
WO (1) WO2012112996A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO341214B1 (en) * 2016-05-20 2017-09-11 Autostore Tech As Leveling Foot
CN106419211A (zh) * 2016-10-25 2017-02-22 福州市台江区迪普贸易有限公司 液压自动调整式底脚
CN110742391A (zh) * 2019-11-04 2020-02-04 泰山学院 一种桌腿长度调节装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682131A (en) * 1952-09-13 1954-06-29 Albert J Matter Automatic table leg adjuster
US4798359A (en) * 1983-07-14 1989-01-17 Johnson Industries, Inc. Furniture glide
US5490648A (en) * 1993-06-07 1996-02-13 Cullen; Christopher P. Mechanical stabilizer
US7104511B2 (en) * 2004-09-22 2006-09-12 Hewlett-Packard Development Company, L.P. Adjustable support for multimedia display device
US7290741B1 (en) * 2004-11-01 2007-11-06 Jacob Holtz Company Furniture glide
US8714499B2 (en) * 2012-03-19 2014-05-06 Ameriwood Industries, Inc. Adjustable foot for furniture

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US729074A (en) 1897-07-09 1903-05-26 Frank Lasher Circular-rib-knitting machine.
GB2111556A (en) * 1981-12-12 1983-07-06 David George Godfrey Floor-panel-supporting jack
EP1970197B1 (de) * 1999-12-02 2010-11-17 Koenig & Bauer AG Druckwerk einer Rotationsdruckmaschine
CN2445645Y (zh) * 2000-10-17 2001-09-05 周京波 桌台家具找正装置
US7744049B2 (en) * 2004-10-07 2010-06-29 Lg Electronics Inc. Automatic level controlling apparatus
DE102005024850A1 (de) * 2005-05-27 2006-12-07 Johan Lefferts Niveau-Ausgleichsvorrichtung für Möbelstücke
AU2007278757B2 (en) * 2006-07-27 2013-03-21 Edward Joseph Khoury Furniture leg adjustment
WO2012004690A1 (en) * 2010-07-08 2012-01-12 Rory Brooke Self adjusting furniture stabilising device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682131A (en) * 1952-09-13 1954-06-29 Albert J Matter Automatic table leg adjuster
US4798359A (en) * 1983-07-14 1989-01-17 Johnson Industries, Inc. Furniture glide
US5490648A (en) * 1993-06-07 1996-02-13 Cullen; Christopher P. Mechanical stabilizer
US7104511B2 (en) * 2004-09-22 2006-09-12 Hewlett-Packard Development Company, L.P. Adjustable support for multimedia display device
US7290741B1 (en) * 2004-11-01 2007-11-06 Jacob Holtz Company Furniture glide
US8714499B2 (en) * 2012-03-19 2014-05-06 Ameriwood Industries, Inc. Adjustable foot for furniture

Also Published As

Publication number Publication date
CA2827667A1 (en) 2012-08-23
CA2827667C (en) 2018-11-20
WO2012112996A1 (en) 2012-08-23
CN103402398A (zh) 2013-11-20
AU2012219281A1 (en) 2013-09-12
BR112013021031A2 (pt) 2016-10-11
CN103402398B (zh) 2015-09-16
EP2675322A1 (en) 2013-12-25
CL2013002375A1 (es) 2014-09-22
EP2675322A4 (en) 2014-08-20

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Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION