EP 2183650 A2 20100512 - ROTATION-SYMMETRICAL REFRACTION SUNDIAL
Title (en)
ROTATION-SYMMETRICAL REFRACTION SUNDIAL
Title (de)
ROTATIONSSYMMETRISCHE BRECHUNGSSONNENUHR
Title (fr)
HORLOGE SOLAIRE À RÉFRACTION ET SYMÉTRIE DE ROTATION
Publication
Application
Priority
- EP 2008005811 W 20080716
- DE 202007010819 U 20070802
Abstract (en)
[origin: WO2009015774A2] The invention relates to a sundial (100) made of a rotation-symmetrical, light-transparent body (11), in particular of a cylindrical body whose external surface contains a light-transmitting, light-scattering face (12), wherein sunlight (13) which is incident on that part of the external surface of a body that is not covered by the face (12) is refracted, bundled and cast onto the face (12) from the inside. In order to provide a sundial (100), in which the time of the day and the date can be determined at the same time and which can also be set up vertically and in which the angular range of the measurement is in principle not limited, the invention proposes that the face (12) and the non-covered part in the form of an annular cutout (14) completely surround the periphery of the body (11), wherein the annular cutout (14) is arranged at right angles to the axis of the body (11).
IPC 8 full level
G04B 49/00 (2006.01)
CPC (source: EP)
G04B 49/04 (2013.01)
Citation (search report)
See references of WO 2009015774A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DE 202007010819 U1 20071129; EP 2183650 A2 20100512; WO 2009015774 A2 20090205; WO 2009015774 A3 20090430
DOCDB simple family (application)
DE 202007010819 U 20070802; EP 08784814 A 20080716; EP 2008005811 W 20080716