GB1578808A - Articulable arms - Google Patents

Articulable arms Download PDF

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Publication number
GB1578808A
GB1578808A GB32944/77A GB3294477A GB1578808A GB 1578808 A GB1578808 A GB 1578808A GB 32944/77 A GB32944/77 A GB 32944/77A GB 3294477 A GB3294477 A GB 3294477A GB 1578808 A GB1578808 A GB 1578808A
Authority
GB
United Kingdom
Prior art keywords
joint
joint head
filament
arm
cup
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
GB32944/77A
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.)
OESTERR KLIMA TECHNIK
Original Assignee
OESTERR KLIMA TECHNIK
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 OESTERR KLIMA TECHNIK filed Critical OESTERR KLIMA TECHNIK
Publication of GB1578808A publication Critical patent/GB1578808A/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
    • F21V21/28—Pivoted arms adjustable in more than one plane
    • F21V21/29—Pivoted arms adjustable in more than one plane employing universal joints
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/10—Arrangements for locking
    • F16C11/103—Arrangements for locking frictionally clamped
    • F16C11/106—Arrangements for locking frictionally clamped for ball joints
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0861—Arrangements of joints with one another and with pipes or hoses
    • 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
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
    • F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
    • 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
    • F16M11/2035—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction
    • F16M11/2078—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction with ball-joint
    • 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
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • 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
    • F16M2200/065—Arms with a special structure, e.g. reinforced or adapted for space reduction

Description

(54) IMPROVEMENTS IN ARTICULABLE ARMS (71) We, OSTERREICHISCHE KLIMA TECHNIK GESELLSCHAFT m.b.H., an Austrian Body Corporate, of A-2733 Grunbach am Schneeberg, Austria, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to articulable arms which can be used for the suspension or mounting of various articles, e.g. flexible pipes, lamps etc.
In order to be able to place an article to be suspended in the desired position, it should be possible to bring the articulable arm into a new position without the action of any particular force but also without the complicated slackening of any screw connections, and the arm should remain in this new position without having to be fastened again, for example by any screw connections. In principle, the articulable arm should thus exhibit a certain degree of inherent rigidity which enables it to carry out its function as support means for any article. However, in overcoming this rigidity by adjustment into a new position, the articulable arm according to the invention should retain this new position by itself.
According to the present invention there is provided an articulable arm comprising at least two rigid tubular arm sections arranged end to end, a joint between the or each adjacent pair of ends comprising a joint cup having a part-spherical inner surface located at one of the pair of ends and a joint head having a complementary part-spherical outer surface located at the other of the pair of ends, and a tensile filament extending through the arm sections and through a passageway in the or each joint head so that, in use, the filament can be tensioned to hold the arm sections against relative movement by means of static friction between the partspherical surfaces of the or each joint cup and joint head, a restriction being provided in the passageway in the or each joint head to define a throat generally at the centre of curvature of the part-spherical surface of the respective joint head to guide the filament generally through the respective centre of curvature.
A specific embodiment of an articulable arm according to the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows diagrammatically an articulable arm having three arm sections; and Figure 2 is a section through a joint on an enlarged scale.
Each individual section or member 1 of the articulable arm is formed by an aluminium tube having at one end ajoint cup 2 and at the other end a joint head 3. The joint cup 2 consists of a cup-shaped part 4 and of an extension 5 which has conically tapering recesses 6 and 8 which communicate at their inner, narrow ends via an aperture or throat 7 to form a passage through the joint cup 8.
The inner surface 9 of the joint cup 2 represents a portion of a spherical surface, whereas the outer surface 10 is a surface portion of a non-spherical solid of revolution. An annular recess is provided between the actual cup 4 and the extension 5 and is arranged to receive an open end of a tubular member 1 and grip it securely.
The joint head 3 has a part-spherical outer surface 12 having the same curvature as the inner surface 9 of the joint cup 2.
The joint head 3 is provided at its outer end with an extension 3a having a tapering conical recess 13, and in its interior with a tapering conical recess 14 of opposite sense, which recesses are connected with one another through a bore or throat 15 to form a passage through the joint head. The extension 3a of the joint head 3 is inserted into an associated tubular member 1. Both the joint head 3 and the joint cup 4 are securely connected to their respective tubular members 1 by means of inwardly directed projections which engage recesses 11 in the respective extensions.
A pull rope or cable 16 constitutes a tension filament and extends through a plurality ofjointed members 1, which at one end of the articulable arm is fastened to a spring 17 and which at its other end, however, is pro vided with a tensioning member 18. If the tensioning member 18 is shifted into its operative (tensioning) position, the tension spring 17 and the pull cable 16 act to create a contact force between the joint head 3 and the joint cup 4, whereby static friction is produced between the joint head and the joint cup.
It is to be noted that the pull cable 16 is always applied against the narrowest points of the joint cup and joint head, i.e. extends along the axis of symmetry of the joint cup, joint head and connecting member.
The joint head 3 and joint cup 4 may be made of the same or different material. The interacting surfaces of the joint may also be roughened so as to cause increased static friction. The bearing points for the pull cable 16 may be provided, for example, with bushes so as to ensure a corresponding degree of hardness of the bearing point.
The tension spring and also the tensioning member do not need to be arranged at the ends of the articulable arm, although this is preferable.
WHAT WE CLAIM IS: 1. An articulable arm comprising at least two rigid tubular arm sections arranged end to end, a joint between the or each adjacent pair of ends comprising a joint cup having apart- spherical inner surface located at one of the pair of ends and a joint head having a complementary part-spherical outer surface located at the other of the pair of ends, and a tensile filament extending through the arm sections and through a passageway in the or each joint head so that, in use, the filament can be tensioned to hold the arm sections against relative movement by means of static friction between the part-spherical surfaces of the or each joint cup and joint head, a restriction being provided in the passageway in the or each joint head to define a throat generally at the centre of curvature of the part-spherical surface of the respective joint head to guide the filament generally through the respective centre of curvature.
2. An arm according to claim 1, wherein the filament is tensible by means of a spring connected to one end of the filament, and a pull member arranged to pull the other end of the filament.
3. An arm according to claim 2 wherein the pull member is in the form of a toggle lever.
4. An arm according to either claim 2 or 3 wherein the spring is a tension spring.
5. An articulable arm substantially as hereinbefore described with reference to and as shown in the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    vided with a tensioning member 18. If the tensioning member 18 is shifted into its operative (tensioning) position, the tension spring 17 and the pull cable 16 act to create a contact force between the joint head 3 and the joint cup 4, whereby static friction is produced between the joint head and the joint cup.
    It is to be noted that the pull cable 16 is always applied against the narrowest points of the joint cup and joint head, i.e. extends along the axis of symmetry of the joint cup, joint head and connecting member.
    The joint head 3 and joint cup 4 may be made of the same or different material. The interacting surfaces of the joint may also be roughened so as to cause increased static friction. The bearing points for the pull cable
    16 may be provided, for example, with bushes so as to ensure a corresponding degree of hardness of the bearing point.
    The tension spring and also the tensioning member do not need to be arranged at the ends of the articulable arm, although this is preferable.
    WHAT WE CLAIM IS: 1. An articulable arm comprising at least two rigid tubular arm sections arranged end to end, a joint between the or each adjacent pair of ends comprising a joint cup having apart- spherical inner surface located at one of the pair of ends and a joint head having a complementary part-spherical outer surface located at the other of the pair of ends, and a tensile filament extending through the arm sections and through a passageway in the or each joint head so that, in use, the filament can be tensioned to hold the arm sections against relative movement by means of static friction between the part-spherical surfaces of the or each joint cup and joint head, a restriction being provided in the passageway in the or each joint head to define a throat generally at the centre of curvature of the part-spherical surface of the respective joint head to guide the filament generally through the respective centre of curvature.
  2. 2. An arm according to claim 1, wherein the filament is tensible by means of a spring connected to one end of the filament, and a pull member arranged to pull the other end of the filament.
  3. 3. An arm according to claim 2 wherein the pull member is in the form of a toggle lever.
  4. 4. An arm according to either claim 2 or 3 wherein the spring is a tension spring.
  5. 5. An articulable arm substantially as hereinbefore described with reference to and as shown in the accompanying drawing.
GB32944/77A 1976-08-27 1977-08-05 Articulable arms Expired GB1578808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT638976A AT346024B (en) 1976-08-27 1976-08-27 MULTIPLE JOINT ARM

Publications (1)

Publication Number Publication Date
GB1578808A true GB1578808A (en) 1980-11-12

Family

ID=3585842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32944/77A Expired GB1578808A (en) 1976-08-27 1977-08-05 Articulable arms

Country Status (5)

Country Link
AT (1) AT346024B (en)
DE (1) DE2655819A1 (en)
FR (1) FR2363021A1 (en)
GB (1) GB1578808A (en)
SE (1) SE7614178L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1128801B (en) * 1980-06-05 1986-06-04 Olivetti & Co Spa DEVICE TO ORIENT A VIDEO EQUIPMENT COMPARED TO A FIXED STRUCTURE
NL8101790A (en) * 1981-04-11 1982-11-01 Henricus Josephus Ansems SUPPORT DEVICE.
US4452414A (en) * 1982-05-10 1984-06-05 Ansems Henricus J Supporting device
US4545555A (en) * 1984-07-02 1985-10-08 Koch Mark B Adjustable arm member for use with a lamp or the like
DE4305667B4 (en) * 1992-02-24 2007-11-29 Syron Engineering & Manufacturing, LLC, Saline Joint element for a ball joint
FR2742663B1 (en) * 1995-12-26 1998-07-24 Atochem Elf Sa USE OF A DEODORIZER BASED ON UNDECYLENIC ACID OR ACID DERIVATIVES FOR DEODORIZING PAPER, CARDBOARD AND NON-FABRICS
DE19638215A1 (en) * 1996-09-19 1998-06-10 Maren Lange Universally-adjustable support holding e.g. drinking tube for the handicapped

Also Published As

Publication number Publication date
AT346024B (en) 1978-10-25
ATA638976A (en) 1978-02-15
DE2655819A1 (en) 1978-03-09
SE7614178L (en) 1978-02-28
FR2363021A1 (en) 1978-03-24
FR2363021B3 (en) 1981-01-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee