Claims
- 1. A drive pulley device comprising: a rigid, generally rod-like support of a closed circuit configuration, said support being sufficiently rigid to be self-sustaining whereby it can have a configuration suitable for any drive function and capable of passing around obstructions and the like without requiring additional pulley wheels to do so; a flexible sleeve slidably mounted on said support and entirely enclosing said support to define a closed circuit, said sleeve being filled with a lubricating fluid whereby friction between said sleeve and said rigid support is minimized; and at least two pulley wheels mounted on mounting means and supportably engaging said flexible sleeve at two spaced points whereby rotation of one of said wheels causes said sleeve to slide on said support and thereby rotate the other of said wheels.
- 2. A drive pulley device comprising: a rigid, generally rod-like support of a closed circuit configuration, said support being sufficiently rigid to be self-sustaining whereby it can have a configuration suitable for any drive function and capable of passing around obstructions and the like without requiring additional pulley wheels to do so; a flexible sleeve slidably mounted on said support and entirely enclosing said support to define a closed circuit; bearings being slidably mounted on said rigid support within said sleeve to thereby render said sleeve more freely slidable on said rigid support and minimize the extent to which said sleeve can collapse and bind up on said rigid support; and at least two pulley wheels mounted on mounting means and supportably engaging said flexible sleeve at two spaced points whereby rotation of one of said wheels causes said sleeve to slide on said support and thereby rotate the other of said wheels.
- 3. A drive pulley device comprising: a rigid, generally rod-like support of a closed circuit configuration, said support being sufficiently rigid to be self-sustaining whereby it can have a configuration suitable for any drive function and capable of passing around obstructions and the like without requiring additional pulley wheels to do so; a flexible sleeve slidably mounted on said support and entirely enclosing said support to define a closed circuit; said sleeve being corrugated in configuration whereby the extent of contact between the inner surface of said sleeve and said rigid support is minimized and whereby pockets are formed for storing lubricating material which may be placed within said sleeve; and at least two pulley wheels mounted on mounting means and supportably engaging said flexible sleeve at two spaced points whereby rotation of one of said wheels causes said sleeve to slide on said support and thereby rotate the other of said wheels.
CROSS REFERENCE TO RELATED APPLICATION
This is a divisional application of parent application Ser. No. 310,411, filed Nov. 29, 1972, now U.S. Pat. No. 3,883,192, and entitled MOVEMENT DEVICE.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
310411 |
Nov 1972 |
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