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Document Number
US Patent 3668790
Issued Date
June 13, 1972
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Abstract
A terrain model suitable for use with a viewing device to simulate terrain features of the real world with means for varying in a controlled manner the elevation of various portions of the model, thereby allowing the contour of the terrain to be changed quickly and easily. The changes are accomplished by movable actuators located beneath a deformable, elastic sheet. Means are also provided for maintaining permanent features, such as buildings, in the proper vertical relationship as the slope of the surface thereunder is varied.
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VARIABLE TERRAIN MODEL - US Patent 3668790 Drawing
Drawing from US Patent 3668790
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Number of Claims:
2
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Owner
The Singer Company (Binghamton, NY)
Published
June 13, 1972
Application Number
04/883,009
Filed
December 8, 1969
US Classification
434/38  
Int'l Classification
G09B   25/06   (20060101)   G09B   9/02   (20060101)   G09B   25/00   (20060101)   G09B   9/30   (20060101)  
Assistant Examiner
Priority Data
Dec 12, 1968 [GB] 59,219/68
USPTO Field of Search
35/12L   35/12N   35/41  
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Description
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