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  Patent History
  • Application
    US 09/705983 2000-11-03
  • Granted
    US 6449854 2002-09-17
  Patent Family

granted patent: Universal Solar Chart Shadow Plotter And Method For Plotting A Shadow

TitleUniversal Solar Chart Shadow Plotter And Method For Plotting A Shadow
Granted PatentUS 6449854
Granted Date2002-09-17
Priority Date2000-11-03 US 09/705983
Inventors
Issue Date2002
Citation
US Patent 6449854. Washington, DC: US Patent and Trademark Office (USPTO), 2002 How to Cite?
AbstractAn Apparatus For Estimating A Shadow On A Scaled Figure Is Presented Herein. The Apparatus Includes A Circular Disk With A Lines Corresponding To The Declination Angle Of The Earth With Respect To The Sun At Particular Dates Of The Year. The Apparatus Also Includes Arcs On The Circular Disk Which Correspond To The Earth's Rotation At Particular Times Of The Day. The Circular Disk Can Also Have A Slot To Facilitate Insertion Of A Pencil Or Pen Time Therein. The Circular Disk Is Substantially Transparent To Enable A User To Lay The Disk Over A Scaled Figure And Make Calculations And Measurements Corresponding To A Shadow To Be Estimated. Also Disclosed Is A Method For Estimating A Shadow For A Structure Depicted In A Scaled Figure. The Circular Disk Is Placed Over The Scaled Figure Such That The Slot In The Disk Is Aligned With An Azimuth Of The Sun So As To Trace A Shadow Line. The Circular Disk Is Then Reoriented Perpendicular To The Shadow Line So That A Scaled Height Line May Be Traced. The Circular Disk Is Then Relocated So That The Center Of The Slot Is Located At The End Of The Scaled Height Line. The Circular Disk Is Then Rotated To An Angle Corresponding To The Height Of The Sun And A Projection Line Is Traced In The Slot From The End Of The Scaled Height Line To The Shadow Line. In This Manner, The Length Of The Shadow For A Given Azimuth And Altitude Can Be Determined.
Persistent Identifierhttp://hdl.handle.net/10722/142202
References

 

DC FieldValueLanguage
dc.date.accessioned2011-10-19T06:35:00Z-
dc.date.available2011-10-19T06:35:00Z-
dc.date.issued2002-
dc.identifier.citationUS Patent 6449854. Washington, DC: US Patent and Trademark Office (USPTO), 2002en_HK
dc.identifier.urihttp://hdl.handle.net/10722/142202-
dc.description.abstractAn Apparatus For Estimating A Shadow On A Scaled Figure Is Presented Herein. The Apparatus Includes A Circular Disk With A Lines Corresponding To The Declination Angle Of The Earth With Respect To The Sun At Particular Dates Of The Year. The Apparatus Also Includes Arcs On The Circular Disk Which Correspond To The Earth's Rotation At Particular Times Of The Day. The Circular Disk Can Also Have A Slot To Facilitate Insertion Of A Pencil Or Pen Time Therein. The Circular Disk Is Substantially Transparent To Enable A User To Lay The Disk Over A Scaled Figure And Make Calculations And Measurements Corresponding To A Shadow To Be Estimated. Also Disclosed Is A Method For Estimating A Shadow For A Structure Depicted In A Scaled Figure. The Circular Disk Is Placed Over The Scaled Figure Such That The Slot In The Disk Is Aligned With An Azimuth Of The Sun So As To Trace A Shadow Line. The Circular Disk Is Then Reoriented Perpendicular To The Shadow Line So That A Scaled Height Line May Be Traced. The Circular Disk Is Then Relocated So That The Center Of The Slot Is Located At The End Of The Scaled Height Line. The Circular Disk Is Then Rotated To An Angle Corresponding To The Height Of The Sun And A Projection Line Is Traced In The Slot From The End Of The Scaled Height Line To The Shadow Line. In This Manner, The Length Of The Shadow For A Given Azimuth And Altitude Can Be Determined.en_HK
dc.relation.isreferencedbyUS 2010095538 (A1) 2010-04-22en_HK
dc.relation.isreferencedbyUS 7721454 (B2) 2010-05-25en_HK
dc.relation.isreferencedbyUS 7685722 (B1) 2010-03-30en_HK
dc.relation.isreferencedbyUS 2005034319 (A1) 2005-02-17en_HK
dc.relation.isreferencedbyUS 6973737 (B2) 2005-12-13en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents-
dc.titleUniversal Solar Chart Shadow Plotter And Method For Plotting A Shadowen_HK
dc.typePatenten_US
dc.identifier.emailCheung, Kwok Pun:kpcheuna@hkucc.hku.hken_US
dc.identifier.authorityCheung, Kwok Pun=rp00996en_US
dc.description.naturepublished_or_final_version-
dc.contributor.inventorCheung, Kwok Punen_US
patents.identifier.applicationUS 09/705983en_HK
patents.identifier.grantedUS 6449854en_HK
patents.description.assigneeUniv Hong Kong [Cn]en_HK
patents.description.countryUnited States of Americaen_HK
patents.date.granted2002-09-17en_HK
dc.relation.referencesUS 780178 (A) 1905-01-17en_HK
dc.relation.referencesUS 910230 (A) 1909-01-19en_HK
dc.relation.referencesUS 990764 (A) 1911-04-25en_HK
dc.relation.referencesUS 1391305 (A) 1921-09-20en_HK
dc.relation.referencesUS 1817350 (A) 1931-08-04en_HK
dc.relation.referencesUS 2478315 (A) 1949-08-09en_HK
dc.relation.referencesUS 2531932 (A) 1950-11-28en_HK
dc.relation.referencesUS 2715273 (A) 1955-08-16en_HK
dc.relation.referencesUS 2884697 (A) 1959-05-05en_HK
dc.relation.referencesUS 5186630 (A) 1993-02-16en_HK
dc.relation.referencesUS 5425178 (A) 1995-06-20en_HK
dc.relation.referencesGB 2158618 (A) 1985-11-13en_HK
dc.relation.referencesGB 2158618 (B) 1987-05-20en_HK
dc.relation.referencesWO 9305362 (A1) 1993-03-18en_HK
patents.identifier.hkutechidArch-2000-00024-1en_US
patents.date.application2000-11-03en_HK
patents.date.priority2000-11-03 US 09/705983en_HK
patents.description.ccUSen_HK
patents.relation.familyUS 6449854 (B1) 2002-09-17en_HK
patents.description.kindB1en_HK
patents.typePatent_granteden_HK

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