EP 0097178 B1 19860813 - PUZZLE
Title (en)
PUZZLE
Publication
Application
Priority
AU PF209581 A 19811224
Abstract (en)
[origin: WO8302239A1] A two-dimensional puzzle having at least two overlapping circles (10, 20) of equal radius, each of which is defined by a number of petals (15) and a number of triangles (16), each petal being formed of two arcs each having a radius equal to the circle radius and a chord equal in length to such radius, each face of each triangle being an arc complementary to the arc of the petals, adjacent circles (10, 20) having common components (15<I>-15<V>, 16<I>, 16<II>) so arranged that each circle can be rotated relative to each other circle thereby causing spatial displacement of the common components. The various components (15, 16) can interlock with each other or can be held onto a surface, such as by magnetism.
IPC 1-7
IPC 8 full level
A63F 9/00 (2006.01); A63F 9/08 (2006.01); A63F 9/34 (2006.01)
CPC (source: EP)
A63F 9/0823 (2013.01); A63F 9/34 (2013.01)
Citation (examination)
SCIENTIFIC AMERICAN, vol. 247, no. 1, July 1982, New York (US), D.R. HOFSTADTER: "Metamagical themas", pages 18 - 30
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 8302239 A1 19830707; DE 3272645 D1 19860918; EP 0097178 A1 19840104; EP 0097178 A4 19840917; EP 0097178 B1 19860813; JP S58502133 A 19831215
DOCDB simple family (application)
AU 8200208 W 19821215; DE 3272645 T 19821215; EP 83900004 A 19821215; JP 50015883 A 19821215