Guide device for linear motion
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Sep 12, 2002
app pub date -
Nov 2, 2001
filing date -
Dec 5, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A guide device includes a ram and a column translatable axially relative to each other. The ram has an outer circumferential surface of a squared cross section formed of four flat portions each of which extends axially. The column disposed around the ram has a through hole of a squared cross section formed of four flat portions corresponding to the flat portions of the ram. In each flat portion of the column is provided a needle bearing that rolls on the corresponding flat portion of the ram. Inside the column are provided a plurality of supporting shafts extending in a direction perpendicular to the extending direction or to the axial direction of each flat portion of the ram. Each needle bearing is rotatably supported by the corresponding supporting shaft.
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