EP0072570A2 - Table pour projecteur - Google Patents

Table pour projecteur Download PDF

Info

Publication number
EP0072570A2
EP0072570A2 EP82107517A EP82107517A EP0072570A2 EP 0072570 A2 EP0072570 A2 EP 0072570A2 EP 82107517 A EP82107517 A EP 82107517A EP 82107517 A EP82107517 A EP 82107517A EP 0072570 A2 EP0072570 A2 EP 0072570A2
Authority
EP
European Patent Office
Prior art keywords
support plate
projection table
table according
legs
projection
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.)
Ceased
Application number
EP82107517A
Other languages
German (de)
English (en)
Other versions
EP0072570A3 (fr
Inventor
Helmut Meinunger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0072570A2 publication Critical patent/EP0072570A2/fr
Publication of EP0072570A3 publication Critical patent/EP0072570A3/fr
Ceased legal-status Critical Current

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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
    • A47B37/00—Tables adapted for other particular purposes
    • A47B37/02—Tables specially adapted to be used with domestic photographic projectors, e.g. tables with levelling arrangements

Definitions

  • the invention relates to a projection table with a support plate and legs attached to it. Such tables are used for the installation of film and slide projectors.
  • the tripod legs consist of two U-shaped tubes which form two pairs of legs, which in the upper third are pivotally connected to one another by means of a bolt in the form of a scissors. With the open ends, the pairs of legs stand on the floor.
  • the support plate On the horizontal connecting part of one pair of legs, the support plate is pivoted on one side by means of two clamps. The other side of the plate is supported on the end of a threaded bolt, which is screwed into the middle of the connecting part of the other pair of legs and is height-adjustable by means of a hand crank.
  • This construction makes it possible to adjust the inclination of the support plates.
  • the end of the threaded bolt can be locked in a clamping device under the support plates.
  • the two pairs of legs remain in their spread position.
  • the pairs of legs can be folded into one plane around the bolt connecting them.
  • the recording table then swings automatically around the two clamps into the same position. This enables space-saving storage of the projection table.
  • Such a well-known project When opened, the table is unstable and not very stable. This is particularly noticeable when the projection table is on an uneven floor and / or when it is loaded with a heavy projector. In addition, it is disturbing that the height of the platen is not adjustable.
  • the invention has for its object to avoid these disadvantages and to create a simply constructed projection table that is extremely stable, in which the support plate is adjustable in a desired inclination, and in which the height of the support plate is adjustable.
  • the locking screw consists of a screw bolt, one end of which is thickened, preferably swaged, and a knurled nut is screwed onto the other end.
  • a plate spring can be arranged under this.
  • the two outer and the two inner legs are each connected by a, preferably attachable, bracket.
  • a pair of legs can be pivoted away at the same time.
  • the clip-on bracket can advantageously be manufactured separately in an injection molding process and easily assembled.
  • a storage plate can be arranged in a snap-in manner under the support plate.
  • This storage plate can advantageously be inserted into two L-shaped holders arranged on the underside of the support plate.
  • the support plate can have at least one downwardly projecting projection which engages with the support plate and holds it in position.
  • the projection table according to the invention essentially consists of a support plate 1, on the underside of which a bearing part 2 provided with a bore is arranged.
  • This bearing part 2 can be formed in one piece with the plate.
  • two pairs of tripod legs 3, 3 and 3 ', 3' are pivotally articulated, which are provided with disk-shaped parts 4 and 4 'at their upper end, and which also have a bore.
  • a screw bolt 5 extends through the bore of the disk-shaped parts 4 and 4 'and of the fastening part 2 and has at one end an upset part 5A of larger diameter, onto which a washer is pushed.
  • a washer 6 or a plate spring is also arranged.
  • This can consist of elastically deformable material, preferably of plastic, and can be clamped onto the tripod legs 3 or 3 'with open eyelets 8A.
  • 3 ' elastic buffers 9 are arranged.
  • a support plate 10 can additionally be arranged under the support plate 1, which can be inserted into angular holders 11 and 11 '.
  • the storage plate 10 has on its underside protruding projections 12 which are arranged at a distance from the width of the brackets 11.
  • the plate 1 can be provided with a strip 13 which is in engagement with the storage plate 10. The strip 13 prevents the storage plate 10 from tipping.
  • the assembly of the storage plate 10 is particularly simple. It is inserted under the support plate 1 into the angular brackets 11 and 11 '. The outer of the projections 12 slides over the holder 11 'and this is then held between two projections.
  • the knurled nut 7 is loosened, the legs are then spread into the desired position and the knurled nut 7 is slightly tightened. Then the projection table 1 is brought into the horizontal position or the desired inclined position, then the knurled nut 7 is tightened. The projection table is then immovably fixed in its position. Through the connecting bracket 8 and 8 'two legs are moved to the same angular position. The height of the projection table can be adjusted by spreading the pairs of legs 3 and 3 'to a greater or lesser extent.
  • the plate 10 is used to store slide boxes etc.
  • the support plate, storage plate, bracket and the washers 4, 4 'arranged on both ends of the tripod legs 3, 3' and the locking screw can be made of plastic.
  • the tripod legs are preferably made of aluminum tube, the locking pin 5 made of steel.

Landscapes

  • Tables And Desks Characterized By Structural Shape (AREA)
  • Projection Apparatus (AREA)
  • Accessories Of Cameras (AREA)
EP82107517A 1981-08-19 1982-08-18 Table pour projecteur Ceased EP0072570A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3132823 1981-08-19
DE19813132823 DE3132823A1 (de) 1981-08-19 1981-08-19 "projektionstisch"

Publications (2)

Publication Number Publication Date
EP0072570A2 true EP0072570A2 (fr) 1983-02-23
EP0072570A3 EP0072570A3 (fr) 1984-08-01

Family

ID=6139665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107517A Ceased EP0072570A3 (fr) 1981-08-19 1982-08-18 Table pour projecteur

Country Status (2)

Country Link
EP (1) EP0072570A3 (fr)
DE (1) DE3132823A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6681704B1 (en) * 2002-07-10 2004-01-27 William David Brookhiser Rotary positioning table

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951695A1 (de) * 1999-10-27 2001-05-03 Johannes H Thiesen Staffelei

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1542881A (en) * 1924-11-10 1925-06-23 Hoffman Adolph Adjustable supporting mechanism for drawing boards
DE801010C (de) * 1949-10-30 1950-12-18 Franz Kuhlmann K G Kleinzeichentisch
DE1766732U (de) * 1957-10-21 1958-05-14 Hendricus Christiaan Dumas Projektions- und foto-tischstativ.
FR1239237A (fr) * 1959-10-30 1960-08-19 Ind Conti Cornuda Planche à dessin, réglable en hauteur et inclinaison, d'une structure simplifiée, destinée particulièrement à l'usage d'étudiants et de techniciens
FR1586062A (fr) * 1968-10-23 1970-02-06

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1542881A (en) * 1924-11-10 1925-06-23 Hoffman Adolph Adjustable supporting mechanism for drawing boards
DE801010C (de) * 1949-10-30 1950-12-18 Franz Kuhlmann K G Kleinzeichentisch
DE1766732U (de) * 1957-10-21 1958-05-14 Hendricus Christiaan Dumas Projektions- und foto-tischstativ.
FR1239237A (fr) * 1959-10-30 1960-08-19 Ind Conti Cornuda Planche à dessin, réglable en hauteur et inclinaison, d'une structure simplifiée, destinée particulièrement à l'usage d'étudiants et de techniciens
FR1586062A (fr) * 1968-10-23 1970-02-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6681704B1 (en) * 2002-07-10 2004-01-27 William David Brookhiser Rotary positioning table

Also Published As

Publication number Publication date
EP0072570A3 (fr) 1984-08-01
DE3132823A1 (de) 1983-03-03

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19841219

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Effective date: 19861030