GB785363A - Counterpoise suspension - Google Patents

Counterpoise suspension

Info

Publication number
GB785363A
GB785363A GB19298/54A GB1929854A GB785363A GB 785363 A GB785363 A GB 785363A GB 19298/54 A GB19298/54 A GB 19298/54A GB 1929854 A GB1929854 A GB 1929854A GB 785363 A GB785363 A GB 785363A
Authority
GB
United Kingdom
Prior art keywords
strut
spring
bearing
plate
plates
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.)
Expired
Application number
GB19298/54A
Inventor
Geoffrey Boulsover
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.)
Amalgamated Dental Co Ltd
Original Assignee
Amalgamated Dental Co Ltd
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 Amalgamated Dental Co Ltd filed Critical Amalgamated Dental Co Ltd
Priority to GB19298/54A priority Critical patent/GB785363A/en
Publication of GB785363A publication Critical patent/GB785363A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms
    • 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
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
    • 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
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
    • F16M11/2014—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a vertical axis
    • 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
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2092—Undercarriages with or without wheels comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage
    • 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
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • 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
    • F16M2200/00—Details of stands or supports
    • F16M2200/04—Balancing means
    • F16M2200/044—Balancing means for balancing rotational movement of the undercarriage
    • 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
    • F16M2200/00—Details of stands or supports
    • F16M2200/06—Arms
    • F16M2200/063—Parallelogram arms

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

785,363. Counterbalanced brackets. AMALGAMATED DENTAL CO., Ltd. July 1, 1955 [July 1, 1954], No. 19298/54. Class 52(5) A counterbalanced bracket comprises a parallelogram linkage and a spring- loaded cross link, a cam and follower mechanism being provided to vary the spring thrust in response to displacement of the linkage to give automatic counterpoise as the long links of the parallelogram are swung to both sides of the horizontal. As shown, a sleeve formed by cover plates 6 and a tubular strut 9, housed in the sleeve, form the long links of the parallelogram, the short links being formed by a plate 1, secured to a support 4 by a vertical pivot 3, and a plate 10 connected by a vertical swivel pin 11 to a support 12 for the load. The plates 6 and the bifurcated ends 8, 15 of the strut 9 are pivoted to the plates 1, 10 at 5, 13, 7, 14, the end 8 being slotted at 19 and housing a roller 20 yoked to a bearing 23 slidable on the strut 9. One end of a cross link 16 is also pivoted to the plate 1 at 5 and at its other end is pivoted at 17 to plates 6 and to a bearing 18 slidable on the strut 9. A spring 24 between the bearings 18, 23 urges the roller 20 against the end of plate 1 which is shaped as a cam 25 circular about the pivot 7 and having a sharply curved lower part 26 so that as the linkage is depressed below the horizontal the bearing 23 recedes from the bearing 18 and the thrust of the spring is diminished, diminution on the other side of the horizontal being effected by sliding of the cross-link. The cam profile is such that counterpoise of the load is effected by the change in the thrust of the spring together with the leverage of the roller 20 on the strut 9. An abutment 27 and threaded sleeve 28 are a fine adjustment and for use with an electric lamp wires and a switch are provided.
GB19298/54A 1954-07-01 1954-07-01 Counterpoise suspension Expired GB785363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19298/54A GB785363A (en) 1954-07-01 1954-07-01 Counterpoise suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19298/54A GB785363A (en) 1954-07-01 1954-07-01 Counterpoise suspension

Publications (1)

Publication Number Publication Date
GB785363A true GB785363A (en) 1957-10-30

Family

ID=10127073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19298/54A Expired GB785363A (en) 1954-07-01 1954-07-01 Counterpoise suspension

Country Status (1)

Country Link
GB (1) GB785363A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082244A (en) * 1976-11-01 1978-04-04 Groff Leroy K Counterbalancing supporting device
EP0129361A2 (en) * 1983-06-16 1984-12-27 Orion-Yhtymä Oy A supporting arm capable of being turned freely into different positions
EP0445331A1 (en) * 1990-03-07 1991-09-11 First National Investments Ltd. Pivoting arm for a carrier plate, especially a video display unit carrier plate
WO1994018490A1 (en) * 1993-02-08 1994-08-18 Hughes Aircraft Company Movable supporting arm
WO2004065842A1 (en) * 2003-01-17 2004-08-05 Constant Force Technology, Llc Support arm
US7252277B2 (en) 2003-01-17 2007-08-07 Ergotron, Inc. Support arm
GB2493365A (en) * 2011-08-01 2013-02-06 Colebrook Bosson & Saunders Products Ltd Adjustable support system with slidable spring pusher
US8925154B2 (en) 2003-05-20 2015-01-06 Ergotron, Inc. Pivot mechanism for adjusting a position of an electronic display
US9222616B2 (en) 2012-03-30 2015-12-29 Ergotron, Inc. Counterbalancing lift mechanisms and methods
US9267639B2 (en) 2003-05-20 2016-02-23 Ergotron, Inc Lift mechanism systems and methods
US10267451B2 (en) 2003-05-20 2019-04-23 Ergotron, Inc. Lift mechanism systems and methods
CN112773625A (en) * 2021-01-21 2021-05-11 天津职业技术师范大学(中国职业培训指导教师进修中心) Self-balancing device for wheelchair
WO2023052529A1 (en) * 2021-10-01 2023-04-06 Occhio GmbH Light with pivotably mounted light head

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082244A (en) * 1976-11-01 1978-04-04 Groff Leroy K Counterbalancing supporting device
EP0129361A2 (en) * 1983-06-16 1984-12-27 Orion-Yhtymä Oy A supporting arm capable of being turned freely into different positions
EP0129361A3 (en) * 1983-06-16 1985-10-30 Orion-Yhtymä Oy A supporting arm capable of being turned freely into different positions
EP0445331A1 (en) * 1990-03-07 1991-09-11 First National Investments Ltd. Pivoting arm for a carrier plate, especially a video display unit carrier plate
US5123621A (en) * 1990-03-07 1992-06-23 First National Investments Limited Swivel arm for a supporting plate, in particular a monitor supporting plate
WO1994018490A1 (en) * 1993-02-08 1994-08-18 Hughes Aircraft Company Movable supporting arm
US6997422B2 (en) 2002-08-21 2006-02-14 Ergotron, Inc. Stand
US7252277B2 (en) 2003-01-17 2007-08-07 Ergotron, Inc. Support arm
WO2004065842A1 (en) * 2003-01-17 2004-08-05 Constant Force Technology, Llc Support arm
US8925154B2 (en) 2003-05-20 2015-01-06 Ergotron, Inc. Pivot mechanism for adjusting a position of an electronic display
US9267639B2 (en) 2003-05-20 2016-02-23 Ergotron, Inc Lift mechanism systems and methods
US9360152B2 (en) 2003-05-20 2016-06-07 Ergotron, Inc. Lift mechanism systems and methods
US9687073B2 (en) 2003-05-20 2017-06-27 Ergotron, Inc. Lift mechanism systems and methods
US10267451B2 (en) 2003-05-20 2019-04-23 Ergotron, Inc. Lift mechanism systems and methods
GB2493365A (en) * 2011-08-01 2013-02-06 Colebrook Bosson & Saunders Products Ltd Adjustable support system with slidable spring pusher
US9222616B2 (en) 2012-03-30 2015-12-29 Ergotron, Inc. Counterbalancing lift mechanisms and methods
CN112773625A (en) * 2021-01-21 2021-05-11 天津职业技术师范大学(中国职业培训指导教师进修中心) Self-balancing device for wheelchair
WO2023052529A1 (en) * 2021-10-01 2023-04-06 Occhio GmbH Light with pivotably mounted light head

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