Self-propelled carriage suitable for moving in a cylindrical gallery
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United States of America Patent
Stats
-
Feb 21, 2006
Grant Date -
Apr 24, 2003
app pub date -
May 4, 2001
filing date -
May 4, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a self-propelled carriage suitable for traveling in a gallery of substantially cylindrical shape. The carriage comprises a chassis (1) made up of two wheel sets (14); a skip (10); and a horizontal longitudinal support axis (16) on which said skip is pivotally mounted. Each wheel set comprises two arms (24, 26) each having a first end pivotally mounted on one end of said axis; two rotary drive shafts (32) extend orthogonally to the support axis and are mounted at the opposite ends of the arms; drive means (38) for rotating said shafts; and two wheels (40, 42), each wheel comprising a hub (54) secured to a respective drive shaft, at least one circular disk secured to the hub, and having its periphery fitted with a plurality of rollers mounted to rotate freely about axes that are orthogonal to the axis of the wheel.
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Cited Art Landscape
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