US3280322A - Counterbalanced lamp - Google Patents

Counterbalanced lamp Download PDF

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Publication number
US3280322A
US3280322A US351050A US35105064A US3280322A US 3280322 A US3280322 A US 3280322A US 351050 A US351050 A US 351050A US 35105064 A US35105064 A US 35105064A US 3280322 A US3280322 A US 3280322A
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US
United States
Prior art keywords
eccentric
arm
peripheral surface
pivot
axis
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 - Lifetime
Application number
US351050A
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English (en)
Inventor
Kirkeby Eivind
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3280322A publication Critical patent/US3280322A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal 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
    • F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
    • F16M11/2021—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a horizontal 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
    • F16M2200/00—Details of stands or supports
    • F16M2200/04—Balancing means
    • F16M2200/041—Balancing means for balancing rotational movement of the head

Definitions

  • the invention relates to an arrangement of working lamps of the type which consist of a lamp foundation which can be secured to the edge of a table, a machine or the like, comprising a housing in which is mounted a spring-balanced lamp arm consisting of two members. Such lamp arms are usually counterbalanced by aid of an eccentric connection and tension screw springs, so that the lamp arm by its counterbalancing can be adjusted and kept in position at a desired angle.
  • By 1 is designated the upper part of the support, i.e. the housing in which is mounted the jointed lamp arm.
  • the innermost or lower arm 3 is coupled to the outer or upper arm 4 by aid of the wrist pin or pivot pin 5.
  • the right-hand end of the upper arm 4 and the central portion of the lower arm 3 are cut away.
  • the bottom portion of arm 3 extends through a slot in the top of housing 1 and is pivoted upon a spindle or pivot pin 2 rigidly mounted on the housing.
  • the pivotal mounting of arm 3 is through an eccentric disk 8 fixed to the arm and journaled on pivot pin 2, and having an annular peripheral surface.
  • An outer eccentric disk 7 is journaled on the peripheral surface of eccentric disk 8 and has an annular peripheral surface.
  • a draw bar or rod 6 is positioned within arm 3 and is pivotally connected at its lower end to eccentric disk 7 by a pivot pin 9; and, at its upper end, it is connected to upper arm 4 by a pivot pin 6'.
  • a tension spring is positioned within housing 1 and is anchored at its lower end, and at its upper end there is an integral hook portion 10'. Hook portion 10' rests upon the top peripheral surface of eccentric disk 7 so as to provide a saddle-like interconnection between the spring and the eccentric disks.
  • the direction of the force exerted by spring 10 upon the peripheral surface of disk 7 is generally from the axis of pivot pin 2 toward the Zone within which the eccentric axes move during the swinging of arms 3 and 4.
  • the two eccentric disks 7 and 8 are arranged in relation to arms 3 and 4 so that there is maximum expansion of spring 10 when the arms are substantially horizontal.
  • the maximum expansion and tension of the spring counterbalances the maximum moment of force produced by the lamp and arm structure. Movement of either of the arms from the horizontal position reduces this moment of force, and there is a corresponding reduction in the expansion and tension of the spring.
  • the spring 10 provides separate counterbalancing forces for each of the arms.
  • the relative counterbalancing forces for the two arms throughout the ranges of the swinging movements may be varied as required.
  • the construction is simple and sturdy, and yet is efiicient and dependable at all times.
  • a base structure an eccentric pivot structure, a first arm pivotally mounted at one end upon said base structure by said pivot structure to swing around a horizontal axis, a second arm pivoted at one end upon said first arm to swing about a horizontal axis remote from the pivotal mounting of said first arm, said pivot structure including pivot means fixed to said base structure and an eccentric fixed to said first arm to swing therewith and presenting a first eccentric peripheral surface whereby the swinging of said fixed arm moves the axis of said peripheral surface, a second eccentric swingably mounted upon said first eccentric peripheral surface and presenting a second eccentric peripheral surface, the axis of which is moved by swinging movement of said second eccentric linkage means interconnecting said second eccentric with said second arm at a pivot spaced from the pivotal connection between said first arm and said second arm whereby the pivotal movement of said second arm rotates said second eccentric about said first eccentric peripheral surface, and a spring operatively mounted to exert resilient force against said second eccentric peripheral surface to produce counterbalancing forces upon both
  • said spring is a tension spring exerting force generally in the direction from the axis of said pivot means toward the centers of said eccentric surfaces, and hook means extending around and resting upon said second eccentric surface.
  • said base structure includes a housing having a slot therein through which said first arm extends and wherein said linkage means is a rod extending longitudinally within said first arm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US351050A 1963-05-13 1964-03-11 Counterbalanced lamp Expired - Lifetime US3280322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO14864763 1963-05-13

Publications (1)

Publication Number Publication Date
US3280322A true US3280322A (en) 1966-10-18

Family

ID=19908794

Family Applications (1)

Application Number Title Priority Date Filing Date
US351050A Expired - Lifetime US3280322A (en) 1963-05-13 1964-03-11 Counterbalanced lamp

Country Status (3)

Country Link
US (1) US3280322A (da)
DK (1) DK106342C (da)
GB (1) GB1002839A (da)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702031A (en) * 1971-07-07 1972-11-07 Gen Electric Hair dryer hood tilt mechanism
US3832789A (en) * 1972-12-22 1974-09-03 Schick Inc Nestable hair dryer with tensioned positioning
US3973748A (en) * 1975-01-31 1976-08-10 Konan Camera Research Institute Sustaining device
US4314319A (en) * 1978-08-26 1982-02-02 John Victor Terry Adjustable lamps
DE3741768A1 (de) * 1986-12-17 1988-06-30 Zumtobel Ag Leuchte mit einem schwenkarm
US5170975A (en) * 1991-06-06 1992-12-15 Alan Chadwick Articulated arm with spring for counterbalancing
US5586820A (en) * 1995-08-22 1996-12-24 Klink; Andrew K. Multidirectional task lamp
US20100008854A1 (en) * 2008-07-11 2010-01-14 Seung Joo Haam Metal nanocomposite, preparation method and use thereof
US20110023651A1 (en) * 2005-01-24 2011-02-03 Intuitive Surgical Operations, Inc. Apparatus for compact counter balance arms
US20120267497A1 (en) * 2010-06-09 2012-10-25 Innovative Office Products, Inc. Articulating monitor arm with cable and spring
US8720838B2 (en) 2010-06-09 2014-05-13 Innovative Office Products, Llc Articulating monitor arm with chain and spring
US8834489B2 (en) 2005-01-24 2014-09-16 Intuitive Surgical Operations, Inc. Modular manipulator support for robotic surgery

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222939A (en) * 1988-08-19 1990-03-28 Microcomputer Accessories Inc Adjustable CRT support stand
FR2694440B1 (fr) * 1992-07-29 1995-02-10 Roger Pflieger Dispositif de compensation du mouvement de site d'une tête support pour appareil de prise de vues.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE574751C (de) * 1930-07-04 1933-04-20 Siemens Schuckertwerke Akt Ges An einer Fuehrungsstange entlang verstellbare elektrische Beleuchtungsvorrichtung fuer Wirk- und aehnliche Maschinen
US2665870A (en) * 1950-05-27 1954-01-12 Milton Fletcher Adjustable bracket structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE574751C (de) * 1930-07-04 1933-04-20 Siemens Schuckertwerke Akt Ges An einer Fuehrungsstange entlang verstellbare elektrische Beleuchtungsvorrichtung fuer Wirk- und aehnliche Maschinen
US2665870A (en) * 1950-05-27 1954-01-12 Milton Fletcher Adjustable bracket structure

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702031A (en) * 1971-07-07 1972-11-07 Gen Electric Hair dryer hood tilt mechanism
US3832789A (en) * 1972-12-22 1974-09-03 Schick Inc Nestable hair dryer with tensioned positioning
US3973748A (en) * 1975-01-31 1976-08-10 Konan Camera Research Institute Sustaining device
US4314319A (en) * 1978-08-26 1982-02-02 John Victor Terry Adjustable lamps
DE3741768A1 (de) * 1986-12-17 1988-06-30 Zumtobel Ag Leuchte mit einem schwenkarm
US5170975A (en) * 1991-06-06 1992-12-15 Alan Chadwick Articulated arm with spring for counterbalancing
US5586820A (en) * 1995-08-22 1996-12-24 Klink; Andrew K. Multidirectional task lamp
US8500722B2 (en) 2005-01-24 2013-08-06 Intuitive Surgical Operations, Inc. Methods for compact counter balance arms
US20110023651A1 (en) * 2005-01-24 2011-02-03 Intuitive Surgical Operations, Inc. Apparatus for compact counter balance arms
US8834489B2 (en) 2005-01-24 2014-09-16 Intuitive Surgical Operations, Inc. Modular manipulator support for robotic surgery
US9023060B2 (en) 2005-01-24 2015-05-05 Intuitive Surgical Operations, Inc. Modular manipulator support for robotic surgery
US9291793B2 (en) 2005-01-24 2016-03-22 Intuitive Surgical Operations, Inc. Apparatus for compact counter balance arms
US9877792B2 (en) 2005-01-24 2018-01-30 Intuitive Surgical Operations, Inc. Compact counter balanced arms
US9968405B2 (en) 2005-01-24 2018-05-15 Intuitive Surgical Operations, Inc. Modular manipulator support for robotic surgery
US10786318B2 (en) 2005-01-24 2020-09-29 Intuitive Surgical Operations, Inc. Compact counter balanced arm
US10898281B2 (en) 2005-01-24 2021-01-26 Intuitive Surgical Operations, Inc. Modular manipulator support for robotic surgery
US20100008854A1 (en) * 2008-07-11 2010-01-14 Seung Joo Haam Metal nanocomposite, preparation method and use thereof
US20120267497A1 (en) * 2010-06-09 2012-10-25 Innovative Office Products, Inc. Articulating monitor arm with cable and spring
US8720838B2 (en) 2010-06-09 2014-05-13 Innovative Office Products, Llc Articulating monitor arm with chain and spring
US8931748B2 (en) * 2010-06-09 2015-01-13 Innovative Office Products, Llc Articulating monitor arm with cable and spring

Also Published As

Publication number Publication date
GB1002839A (en) 1965-09-02
DK106342C (da) 1967-01-23

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