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Universal Heliodon-Sundial

Summary

An Apparatus For Use With A Source Of Light Including A First Orientation Device That Includes A Latitude Scale, A Latitude Pointer Rotatable About A First Axis Relative To The Latitude Scale, And A Platform Configured To Support An Architectural Model. The Platform Is Mounted On The Latitude Pointer Such That Rotation Of The Pointer About The First Axis Produces A Corresponding Change In The Position Of The Platform Relative To The Latitude Scale. The Apparatus Also Includes A Second Orientation Device That Includes A Time Scale And A Time Pointer Rotatable About A Second Axis Relative To The Time Scale.; The First Orientation Device Is Mounted On The Time Pointer Such That Rotation Of The Time Pointer About The Second Axis Produces A Corresponding Change In The Position Of The Platform Relative To The Time Scale Without Changing The Position Of The Platform Relative To The Latitude Scale. The Apparatus Further Includes A Third Orientation Device That Includes A Day Of The Year Scale, A Gnomon Operatively Oriented Relative To The Day Of The Year Scale, And A Universal Joint Supporting The Third Orientation Device For Movement Relative To A Source Of Light.; The Second Orientation Device Is Mounted On The Third Orientation Device Such That Movement Of The Third Orientation Device On The Universal Joint Produces A Corresponding Change In The Position Of The Platform Relative To The Source Of Light Without Changing The Position Of The Time Pointer Relative To The Time Scale Or The Position Of The Platform Relative To The Latitude Scale.

Supplementary Information

Patent Number: US6523270B1
Application Number: US2001924286A
Inventor: Cheung, Kwok Pun
Priority Date: 8 Aug 2001
Priority Number: US6523270B1
Application Date: 8 Aug 2001
Publication Date: 25 Feb 2003
IPC Current: G04B004902
US Class: 033270 | 033001DD
Assignee Applicant: The University of Hong Kong
Title: Universal heliodon-sundial
Usefulness: Universal heliodon-sundial
Summary: For use with a light source to simulate directional and parallelism aspects of sunlight falling on a three-dimensional model for any specified combination of latitude, time of day and day of year.
Novelty: Universal heliodon-sundial for use with light source, has orientation device with time scale, mounted on another orientation device with day of year scale, so as to vary position of platform relative to light source

Industry

Architecture/Construction

Sub Group

Architecture

Application No.

US2001924286A

Country/Region

Hong Kong

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