DE2215794A1 - Verfahren zur Herstellung hohler Tetraeder - Google Patents

Verfahren zur Herstellung hohler Tetraeder

Info

Publication number
DE2215794A1
DE2215794A1 DE19722215794 DE2215794A DE2215794A1 DE 2215794 A1 DE2215794 A1 DE 2215794A1 DE 19722215794 DE19722215794 DE 19722215794 DE 2215794 A DE2215794 A DE 2215794A DE 2215794 A1 DE2215794 A1 DE 2215794A1
Authority
DE
Germany
Prior art keywords
triangles
tetrahedra
making hollow
hollow tetrahedra
tetrahedron
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.)
Pending
Application number
DE19722215794
Other languages
German (de)
English (en)
Inventor
Auf Nichtnennung Antrag
Original Assignee
ASCO S.A., Juziers, Yvelines (Frankreich)
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 ASCO S.A., Juziers, Yvelines (Frankreich) filed Critical ASCO S.A., Juziers, Yvelines (Frankreich)
Publication of DE2215794A1 publication Critical patent/DE2215794A1/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
    • G09B23/04—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics for geometry, trigonometry, projection or perspective
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S52/00—Static structures, e.g. buildings
    • Y10S52/10—Polyhedron
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49893—Peripheral joining of opposed mirror image parts to form a hollow body
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Algebra (AREA)
  • Business, Economics & Management (AREA)
  • Geometry (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Toys (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
DE19722215794 1971-04-02 1972-03-30 Verfahren zur Herstellung hohler Tetraeder Pending DE2215794A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7111659A FR2132945A5 (enrdf_load_stackoverflow) 1971-04-02 1971-04-02

Publications (1)

Publication Number Publication Date
DE2215794A1 true DE2215794A1 (de) 1972-10-12

Family

ID=9074635

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722215794 Pending DE2215794A1 (de) 1971-04-02 1972-03-30 Verfahren zur Herstellung hohler Tetraeder

Country Status (5)

Country Link
US (1) US3777359A (enrdf_load_stackoverflow)
DE (1) DE2215794A1 (enrdf_load_stackoverflow)
FR (1) FR2132945A5 (enrdf_load_stackoverflow)
GB (1) GB1329067A (enrdf_load_stackoverflow)
IT (1) IT952526B (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026087A (en) * 1976-04-20 1977-05-31 White Robert R Building block
US4086738A (en) * 1976-10-12 1978-05-02 Louis Saccoccio Kit and components for constructing decorative polyhedrals
US5168677A (en) * 1989-11-15 1992-12-08 Ernesto Daniel Gyurec Method of constructing flat building block modules from the union of two frustums by their congruent bases and slot connectors complement for a variety of constructive or amusing applications
US7574830B2 (en) * 2006-08-08 2009-08-18 Christopher Baker High strength lightweight material
USD798392S1 (en) * 2014-05-27 2017-09-26 T. Dashon Howard Tetrahedral positive universal joint block
GB2528044B (en) 2014-07-04 2018-08-22 Arc Devices Ni Ltd Non-touch optical detection of vital signs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR909217A (fr) * 1945-02-12 1946-05-02 Boule décorative pour arbres de noe:l
US2776521A (en) * 1954-10-27 1957-01-08 Elmer L Zimmerman Construction toy
GB848389A (en) * 1958-04-12 1960-09-14 Sankey Targetti Decorative star element for christmas trees
US3289322A (en) * 1965-06-08 1966-12-06 John J R Patrick Crystal structure display and method
DE1909647B2 (de) * 1969-02-26 1975-09-25 Wilhelm 6080 Gross-Gerau Grimm Formstein

Also Published As

Publication number Publication date
US3777359A (en) 1973-12-11
GB1329067A (en) 1973-09-05
FR2132945A5 (enrdf_load_stackoverflow) 1972-11-24
IT952526B (it) 1973-07-30

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Legal Events

Date Code Title Description
OHN Withdrawal