Articulable column
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United States of America Patent
Stats
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Aug 21, 1990
Grant Date -
N/A
app pub date -
Oct 17, 1989
filing date -
Oct 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Presented is a method and apparatus for incrementally varying the frictional forces along an articulable column having succesive joints formed of alternate ball and socket members. Friction is varied by varying the contact angle between said ball and socket members along the length of the column and by supplying a compressive force to said joints via a tensioned means throughout the column. The effect of varying the frictional forces along the column is to vary the stiffness of individual column joints creating a structural member which can be tailored to the load requirements of a specific application.
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