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US 4,561,798 AGranted
Telescopic cylindrical tube column
AssigneeThomson-CSF
InventorsAlain Elcrin, Edmond Chambron
Life of this patent
Estimating the term…
Abstract
A telescopic cylindrical tube column in which a first tube is fitted into a second tube. Rollers integral with the first tube engage opposite edges of each of a plurality of openings parallel to the longitudinal axis of the column to interlock the tubes. The rollers are fixed to the first tube at points different from their axis of rotation to allow adjustment of the position thereof.
Claims4
A telescopic cylindrical tube column comprising:
- a first tube;
- a second tube with said first tube fitted therein along a longitudinal axis and having at least three openings parallel to said axis and disposed symmetrically about the circumference of said second tube;
- first and second rolling means each fixed to said first tube at points different from their center of rotation to allow adjustment of the position thereof and cooperating with said opening to interconnect said first and second tubes and guide movement of said tubes with respect to each other parallel to said axis, said first rolling means each bearing on one edge of an opening and said second rolling means bearing on the opposite edge.
Dependencies are inferred from the claim text.