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Fluid Controlled Step Drive

IP.com Disclosure Number: IPCOM000091719D
Original Publication Date: 1968-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Sakmann, W: AUTHOR

Abstract

On shaft 1, sleeves 2 and 3 are pivotally mounted on bearings 4. One freewheeling element 5 each is arranged between sleeves 2 and 3 and shaft 1. Tapes 6, wound several times around each sleeve 2 and 3, are attached to springs 7 on the one hand and to the rods of pistons 8 on the other. Pressure is alternately applied to associated hydraulic or pneumatic cylinders 9 through conduits 10 and 11. Cylinders 9 are so connected in series that pistons 8 perform synchronous but opposed strokes. Thus sleeves 2 and 3, through elements 5, alternately, stepwise, and in the same sense of rotation act on shaft 1. Detent 13, fluid-controlled through conduit 12, acts on detent wheel 14 attached to shaft 1 to determine the exact stopping position of shaft 1 at the end of each step.

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Fluid Controlled Step Drive

On shaft 1, sleeves 2 and 3 are pivotally mounted on bearings 4. One freewheeling element 5 each is arranged between sleeves 2 and 3 and shaft 1. Tapes 6, wound several times around each sleeve 2 and 3, are attached to springs 7 on the one hand and to the rods of pistons 8 on the other. Pressure is alternately applied to associated hydraulic or pneumatic cylinders 9 through conduits 10 and 11. Cylinders 9 are so connected in series that pistons 8 perform synchronous but opposed strokes. Thus sleeves 2 and 3, through elements 5, alternately, stepwise, and in the same sense of rotation act on shaft
1. Detent 13, fluid-controlled through conduit 12, acts on detent wheel 14 attached to shaft 1 to determine the exact stopping position of shaft 1 at the end of each step. The size of the rotary steps of shaft 1 can be changed by adjusting stopping pistons 16 rigidly linked with each other by conduit 15 and guided in cylinders 9.

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