US2845263A - Load-balancing device - Google Patents

Load-balancing device Download PDF

Info

Publication number
US2845263A
US2845263A US29946852A US2845263A US 2845263 A US2845263 A US 2845263A US 29946852 A US29946852 A US 29946852A US 2845263 A US2845263 A US 2845263A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
lever
load
device
means
balancing
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
Inventor
Gund Konrad
Original Assignee
Gund Konrad
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44Constructional features of the device for radiation diagnosis
    • A61B6/4429Constructional features of the device for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/447Constructional features of the device for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to counterpoise or springs

Description

July 29, 1 958 K GU D $2,845,263

LOAD-BALANCING DEVICE FiledUuly 1'7, 1952 firzraez nal,

United States Patent LOAD-BALANCING DEVICE Konrad Gund, Erlangen, Germany Application July 17, 1952, Serial No. 299,468

Claims priority, application Germany July 30, 1951 8 Claims. (Cl. 267-1) This invention is concerned with a loador forcecompensation or balancing device having a leverlike load carrier, the weight of the load affecting the carrier with constant force.

The device may be used, for example, with X-ray apparatus in which a load such as an X-ray tube is manually adjusted relative to an object. The load is in such case balanced so that it may be moved without effort.

Details of the invention will appear from the following description which will be rendered with reference to the accompanying diagrammatic drawings wherein:

Fig. 1 shows an embodiment for balancing a load along a perpendicular line; and

Fig. 2 indicates the manner in which the invention may be used in connection with X-ray apparatus.

It is assumed in connection with the embodiment shown in Fig. 1 that a point connecting with a load to be balanced is disposed for displacement along a straight perpendicular line. The invention accomplishes this object by the provision of a lever system linked with spring means. Such system comprises a lever 35 which is pivotally connected at 36 and a lever 37 having a bolt or pin 38 (constituting the load connecting point) disposed for motion within a perpendicular slot 39. The inner ends of the levers 35 and 37 are pivotally linked at M to a double-armed lever 46, to the arms of which are pivotally linked rods 44 and 45, at B and B, respectively, for controlling springs 40 and 41. The springs are confined by bearings or end plates 42, 43 which are respectively pivotally linked with the levers 35 and 37 as indicated at A and A. The forces of the two springs 40, 41 operate through the medium of the rods 44, 45 upon the arms of the lever 46 at points B and B. The lever 46 equalizes the rotary motion caused by the spring forces about a pivot point M so that the lever 46 always retains the identical position. The points B, B accordingly will always be at the same position relative to point M, which is an essential prerequisite for the exact functioning of the device. It is not absolutely necessary that the elements of the device are arranged symmetrically as shown in Fig. 1. The two operation triangles formed by the points A, B, M and A, B', M may be altered relative to one another, as may be desired or required according to operating conditions.

Fig. 2 indicates how the structure shown in Fig. 1 may be used, for example, for balancing the weight of a carriage 47 carrying an X-ray tube and coacting with tiltable table 48 of an X-ray apparatus, in any position of the table. The table 48 is journalled in a stand 49 so that it is tiltable about a horizontal axis 50. The lever device according to Fig. l is secured to a floor carriage 51 which is movable along rails 52 in the direction of the longitudinal axis of the table 48. The lever device extends perpendicular to the rails 52, and the loadconnecting point 53 (corresponding to point 38 in Fig. 1) therefore moves in a perpendicular plane. The straight ice guide of the load-connecting point is eifected by guiding the tube carriage 47 in rails 54, 55 disposed along longitudinal edges of the table. The structure relieves the table 48 of the weight of the X-ray tube and of the tube carriage 47, thus eliminating counterweights which would otherwise be required for balancing these elements. A particular advantage resides in the fact that the elimination of counterweights for the X-ray tube and for the tube carriage relieves the physician engaged in X-ray investigations of having to accelerate these masses or having to apply braking force in making the necessary adjustments.

Changes may be made within the scope and spirit of the appended claims.

I claim:

1. A load balancing device comprising a load lever having one end thereof connected with a load which acts thereupon with constant force exerted in constant direction, means for guiding the corresponding end of said load lever for displacement along a predetermined path, a leverlike member having one end thereof pivotally disposed for angular displacement about a relatively fixed point, an intermediate double-armed lever, common pivot means for inter-linking said double-armed lever midway thereof with the other ends of said load lever and said leverlike member, respectively, a pair of load balancing springs, means for linking corresponding ends of said springs and said load lever and said leverlike member, respectively, and means respectively in engagement with the other end of each spring for transmitting the force thereof to an arm of said double-armed lever.

2. A device as defined in claim 1, wherein said load lever and said leverlike member are for scissorlike displacement symmetrically disposed relative to the pivot axis of said double-armed lever, said load balancing springs being symmetrically disposed with respect to said pivot axis, said predetermined path for guiding the corresponding end of said load lever for displacement extending in a direction corresponding to the direction of force exerted by said load.

3. A device as defined in claim 2, wherein said double-armed lever has two arms of identical length, said arms extending at identical angles with respect to said load lever and said leverlike member.

4. A device as defined in claim 3, comprising compression springs constituting said load balancing springs, one end of each spring being connected with an arm of said double-armed lever and the other ends of said springs being respectively connected with said leverlike member and said load lever at points identically spaced from said common pivot axis.

5. A device as defined in claim 1, comprising means for movably disposing the fixed pivot of said lever-like member, said means for guiding said corresponding end of said load lever being displaceable with the displacement of said common pivot means in identical direction of displacement thereof.

6. In combination with a base member and apparatus movably disposed thereabove, a device for balancing the load of said apparatus, said device comprising means on said base member forming a relatively fixed pivot, means on .said apparatus forming a guide slot positioned above said fixed pivot, levers respectively extending from said guide slot and said fixed pivot, a bearing pivoted to each lever and extending therefrom, means for pivotally joining the free ends of said levers, an angular generallyV- shaped lever pivotally secured at a midpoint thereof upon the pivot joining the free ends of said levers, a rod extending through the respective bearings and pivotally secured 1.01311 end of-said V-shaped lever, and a balancing spring acting between each of said rods and the respective bearing.

7. A structure as defined in claim 6, comprising means carried by each rod for engaging the other end ofthe associatedrspring.

1' 8 A structure defined in claim 6, comprising means for movably mountingsaid base member.

'References'Cited in the file of this patent UNITED STATES PATENTS Dahlstrom June 7, 1921 Wood Nov. 28, 1933 Grabs Sept. 18, 1951 Rouvcrol Oct. 28, 1952 Kohler Nov. 18, 1952

US2845263A 1951-07-30 1952-07-17 Load-balancing device Expired - Lifetime US2845263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2845263X 1951-07-30

Publications (1)

Publication Number Publication Date
US2845263A true US2845263A (en) 1958-07-29

Family

ID=7999564

Family Applications (1)

Application Number Title Priority Date Filing Date
US2845263A Expired - Lifetime US2845263A (en) 1951-07-30 1952-07-17 Load-balancing device

Country Status (1)

Country Link
US (1) US2845263A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028977A (en) * 1958-04-21 1962-04-10 Alliance Machine Co Safety stop mechanism
US3434684A (en) * 1965-08-20 1969-03-25 Siemens Ag Stand for an x-ray device
DE3226873A1 (en) * 1981-07-22 1983-03-10 Vinten Ltd Load balancing device
US4521057A (en) * 1983-02-16 1985-06-04 General Motors Corporation Automobile seat with adjustable damping
US5605101A (en) * 1992-09-15 1997-02-25 Vitec Group, Plc Tiltable payload mounting
DE19548467A1 (en) * 1995-12-22 1997-06-26 Abb Research Ltd Mechanical oscillation damper for e.g. maintaining accuracy of optical fibre sensors
US6375175B1 (en) * 1999-07-09 2002-04-23 Winterhalter Gastronom Gmbh Lifting mechanism
US20050156091A1 (en) * 2002-03-20 2005-07-21 Lindsay Richard A. Tiltable mountings for payloads

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1380781A (en) * 1919-12-23 1921-06-07 Dahlstrom John Shock-absorber
US1937135A (en) * 1933-02-01 1933-11-28 Gen Spring Corp Support
US2568149A (en) * 1948-09-30 1951-09-18 Nat Valve & Mfg Company Line pipe hanger
US2615708A (en) * 1951-06-02 1952-10-28 Grinnell Corp Spring support
US2618449A (en) * 1949-11-21 1952-11-18 Bergen Pipesupport Corp Support device for pipes or the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1380781A (en) * 1919-12-23 1921-06-07 Dahlstrom John Shock-absorber
US1937135A (en) * 1933-02-01 1933-11-28 Gen Spring Corp Support
US2568149A (en) * 1948-09-30 1951-09-18 Nat Valve & Mfg Company Line pipe hanger
US2618449A (en) * 1949-11-21 1952-11-18 Bergen Pipesupport Corp Support device for pipes or the like
US2615708A (en) * 1951-06-02 1952-10-28 Grinnell Corp Spring support

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028977A (en) * 1958-04-21 1962-04-10 Alliance Machine Co Safety stop mechanism
US3434684A (en) * 1965-08-20 1969-03-25 Siemens Ag Stand for an x-ray device
DE3226873A1 (en) * 1981-07-22 1983-03-10 Vinten Ltd Load balancing device
US4521057A (en) * 1983-02-16 1985-06-04 General Motors Corporation Automobile seat with adjustable damping
US5605101A (en) * 1992-09-15 1997-02-25 Vitec Group, Plc Tiltable payload mounting
DE19548467A1 (en) * 1995-12-22 1997-06-26 Abb Research Ltd Mechanical oscillation damper for e.g. maintaining accuracy of optical fibre sensors
US6375175B1 (en) * 1999-07-09 2002-04-23 Winterhalter Gastronom Gmbh Lifting mechanism
US20050156091A1 (en) * 2002-03-20 2005-07-21 Lindsay Richard A. Tiltable mountings for payloads
US7273201B2 (en) * 2002-03-20 2007-09-25 The Vitec Group Plc Tiltable mountings for payloads
CN100532911C (en) 2002-03-20 2009-08-26 维泰克公开有限公司 Improvements in or relating to tiltable mountings for payloads

Similar Documents

Publication Publication Date Title
US3013592A (en) Tilting table saw
US3973748A (en) Sustaining device
US4638610A (en) Theatrical stage
US4541293A (en) Load-bearing telescopic slide assembly and X-ray installation equipped therewith
US3792189A (en) Telescopic cable guide
US3899083A (en) Device ofr damping pendulum movements
US3855840A (en) Material support apparatus for a press brake system
EP0024433A1 (en) Arm with gravity-balancing function
US4029283A (en) Seat supporting assembly
US2864907A (en) Supporting means for flexible members
US3335620A (en) Articulation devices with transmission of movements
US2076446A (en) Equipoising mechanism
US2424523A (en) Aircraft operating mechanism
US2765930A (en) Material handling manipulator
US3401522A (en) Hydrostatic transmission
US3790002A (en) Manipulator with drive motors
US2299251A (en) Adjustable bracket
US2178122A (en) Power equalizing device
US3053095A (en) Apparatus for measuring and regulating very low speeds
US2189706A (en) Automatic side hill equalizer attachment for grain combines
US2531880A (en) Adjustable typewriter support
US4166602A (en) Counterbalancing mechanism for X-ray tubeheads
US3262321A (en) Two-rod seeker head
US4031987A (en) Spring applied, electrically released brake with adjustable thrust element
US4170988A (en) Therapeutic apparatus