CA2224620A1 - Height adjustable counterbalance workstation - Google Patents

Height adjustable counterbalance workstation

Info

Publication number
CA2224620A1
CA2224620A1 CA002224620A CA2224620A CA2224620A1 CA 2224620 A1 CA2224620 A1 CA 2224620A1 CA 002224620 A CA002224620 A CA 002224620A CA 2224620 A CA2224620 A CA 2224620A CA 2224620 A1 CA2224620 A1 CA 2224620A1
Authority
CA
Canada
Prior art keywords
workstation
torsion spring
height adjustable
transmission
counterbalance force
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
CA002224620A
Other languages
French (fr)
Other versions
CA2224620C (en
Inventor
Dragan Grbic
Lee Kenyon
John Laperle
Hanna Shaheen
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.)
Ergotech 1993 Inc
Original Assignee
Ergotech 1993 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
Application filed by Ergotech 1993 Inc filed Critical Ergotech 1993 Inc
Publication of CA2224620A1 publication Critical patent/CA2224620A1/en
Application granted granted Critical
Publication of CA2224620C publication Critical patent/CA2224620C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A47B9/00—Tables with tops of variable height
    • A47B9/02—Tables with tops of variable height with balancing device, e.g. by springs, by weight

Abstract

A height adjustable workstation uses a torsion spring in association with a transmission for providing a counterbalance force opposing downward forces applied to the work surface. The workstation has telescoping legs and the telescopic movement thereof is transmitted through the transmission system to the torsion spring. The torsion spring is loaded and applies the counterbalance force to the legs via the transmission. The system includes a hand engaging adjustment mechanism for varying the magnitude of the counterbalance force and also includes a lock arrangement for locking the workstation at various selected positions. The preferred transmission system includes a rack and pinion gear arrangement connected to the torsion spring by a shaft.
CA002224620A 1996-12-12 1997-12-11 Height adjustable counterbalance workstation Expired - Lifetime CA2224620C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USSN08/764,299 1996-12-12
US08/764,299 US5706739A (en) 1996-12-12 1996-12-12 Height adjustable counterbalance workstation

Publications (2)

Publication Number Publication Date
CA2224620A1 true CA2224620A1 (en) 1998-06-12
CA2224620C CA2224620C (en) 2007-04-17

Family

ID=25070305

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002224620A Expired - Lifetime CA2224620C (en) 1996-12-12 1997-12-11 Height adjustable counterbalance workstation

Country Status (2)

Country Link
US (1) US5706739A (en)
CA (1) CA2224620C (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062148A (en) * 1997-08-01 2000-05-16 Steelcase Development Inc. Height adjustable support for computer equipment and the like
US6038986A (en) * 1998-12-17 2000-03-21 Weber Knapp Company Brake operational control
ATE270059T1 (en) * 1999-05-07 2004-07-15 Merkt Konrad Gmbh DEVICE FOR ADJUSTING THE HEIGHT OF FURNITURE, IN PARTICULAR LIFT TABLES
WO2000074535A1 (en) * 1999-06-07 2000-12-14 Accuride International Inc. Cpu mounting unit
US6546880B2 (en) * 1999-06-09 2003-04-15 Baker Manufacturing Company Height adjustable table
US6289825B1 (en) * 2000-03-31 2001-09-18 Dennis L. Long Adjustment mechanism for workstation
CA2350134A1 (en) * 2000-06-08 2001-12-08 Dennis L. Long Device for controlling the rotation of a shaft
US7077068B1 (en) 2000-11-21 2006-07-18 Baker Manufacturing Co., Inc. Height adjustable table
US6510803B1 (en) * 2000-11-21 2003-01-28 Baker Manufacturing Company, Inc. Height adjustable table
US6682030B2 (en) * 2001-03-08 2004-01-27 Lista International Corporation Workstation with adjustable height frame
US6540191B2 (en) * 2001-03-19 2003-04-01 Lin-Ho Liu Foot stand structure of an adjustable computer desk
US7201353B1 (en) * 2003-06-06 2007-04-10 Yolanda Freeman Adjustable lectern system
US20050066861A1 (en) * 2003-09-29 2005-03-31 The Brewer Company, Llc Lifting column for a medical examination table
US7086632B2 (en) * 2004-04-14 2006-08-08 Wu-Hong Hsieh Keyboard instrument support with adjustable ability
CN101442921B (en) 2004-12-17 2012-11-14 斯蒂尔凯斯发展股份有限公司 Height adjustable table
US20070137535A1 (en) * 2005-12-16 2007-06-21 Steelcase Development Corporation Load compensator for height adjustable table
KR200423262Y1 (en) * 2006-04-14 2006-08-04 홍순구 Desk capable of controlling the height thereof
US20080087788A1 (en) * 2006-10-13 2008-04-17 Ko-Po Cheng Height adjusting device
US7789025B2 (en) * 2006-11-09 2010-09-07 Krueger International, Inc. Height adjustable vertically oriented screen or the like
KR101617283B1 (en) * 2009-05-04 2016-05-02 엘지전자 주식회사 Cooker and Control method of the same
WO2011060224A1 (en) * 2009-11-13 2011-05-19 Ergotron, Inc. Spring arm lift systems
CN103919360B (en) * 2013-01-11 2016-12-28 李海燕 Link-type mechanical elevating table
ES2633600T3 (en) * 2013-11-18 2017-09-22 Usm Holding Ag Height adjustable leg cabinet
US9510670B2 (en) 2014-05-08 2016-12-06 Teknion Limited Height-adjustable table
US9999971B2 (en) * 2015-08-20 2018-06-19 The Boeing Company Ergonomic automated workstation
JP1557149S (en) * 2015-10-19 2016-08-29
USD794982S1 (en) * 2016-04-14 2017-08-22 Williams-Sonoma, Inc. Desk
USD841367S1 (en) * 2016-06-28 2019-02-26 Konecranes Global Corporation Workstation
US11019920B2 (en) 2016-09-23 2021-06-01 Varidesk, Llc Electrically-lifted computer desk and office desk thereof
CN206390562U (en) 2016-09-23 2017-08-11 廖良成 Electric lifting computer desk and its desk
EP3311692A1 (en) * 2016-10-20 2018-04-25 Vitra Patente AG Height-adjustable frame with folding leg elements
US10413063B2 (en) 2017-08-14 2019-09-17 Knoll, Inc. Table connection mechanism and method of using the same
US10390611B2 (en) 2017-11-15 2019-08-27 Knoll, Inc. Privacy screen table connection mechanism
DE112019001101T5 (en) * 2018-03-02 2020-11-12 Ergotron, Inc. HEIGHT-ADJUSTABLE PLATFORMS AND ASSOCIATED MECHANISMS
US10646033B2 (en) 2018-03-02 2020-05-12 Ergotron, Inc. Height adjustable platforms and associated mechanisms
US10779638B2 (en) 2018-06-04 2020-09-22 Knoll, Inc. Table height adjustment system and method of using the same
USD913733S1 (en) 2020-05-18 2021-03-23 Knoll, Inc. Shelving unit
US11549537B2 (en) 2020-06-19 2023-01-10 Knoll, Inc. Article of furniture and method of installing same
US11944208B2 (en) 2021-06-14 2024-04-02 Knoll, Inc. Chair and method of making the chair
US11877646B2 (en) 2021-07-12 2024-01-23 Knoll, Inc. Work surface attachment mechanism, article of furniture, and method of making the article of furniture
US20230218076A1 (en) * 2022-01-07 2023-07-13 Humanscale Corporation Adjustable height table and base assembly

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194187A (en) * 1964-01-13 1965-07-13 Borg Warner Overbed table
US4601246A (en) * 1984-05-07 1986-07-22 Thill, Inc. Support assembly for overbed table
US4619208A (en) * 1984-12-27 1986-10-28 Herman Miller, Inc. Work surface height adjustment mechanism
US4747353A (en) * 1986-10-14 1988-05-31 Weber-Knapp Company Straight line motion mechanism
US5016846A (en) * 1989-01-06 1991-05-21 Bissell Amfab, Inc. Spring and lock support for overbed table
US4981085A (en) * 1989-08-07 1991-01-01 Weber-Knapp Company Table lift mechanism
US5289782A (en) * 1991-12-03 1994-03-01 Westinghouse Electric Corp. Adjustable height table
US5400721A (en) * 1992-06-18 1995-03-28 Greene; H. Peter Load compensator for spring counter-weighting mechanism
US5408940A (en) * 1992-06-25 1995-04-25 Winchell; Paul W. Adjustable height work surface wtih rack and pinion arrangements
US5423502A (en) * 1992-09-11 1995-06-13 Juki America, Inc. Apparatus for positioning a sewing work station and method of using same
AUPM323094A0 (en) * 1994-01-04 1994-01-27 Ergonomic Equipment Pty. Ltd. A desk frame

Also Published As

Publication number Publication date
US5706739A (en) 1998-01-13
CA2224620C (en) 2007-04-17

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20171211