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Hydraulic Rotary Drive

IP.com Disclosure Number: IPCOM000092202D
Original Publication Date: 1968-Oct-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Memis, I: AUTHOR

Abstract

This fluid motor provides good speed control, fast starting and stopping plus the ability to stop in a fixed angular position. As shown at A, fluid pressure applied to switch 1 via pressure line 2 is directed to motor 3 through line 4. Orifices 5 and 6 in the supply and return lines 4 and 7, respectively, in combination with valve 8, control the pressure and therefore the speed of motor 3. The fluid returns through line 7 and switch 1 to return line 9.

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Hydraulic Rotary Drive

This fluid motor provides good speed control, fast starting and stopping plus the ability to stop in a fixed angular position. As shown at A, fluid pressure applied to switch 1 via pressure line 2 is directed to motor 3 through line 4. Orifices 5 and 6 in the supply and return lines 4 and 7, respectively, in combination with valve 8, control the pressure and therefore the speed of motor
3. The fluid returns through line 7 and switch 1 to return line 9.

Operation of switch 1 diverts the fluid pressure from the running position, described above, to the stop position by directing the fluid to valve 10 via line 11. Valve 10 shown at B comprises stationary sections 12 and 13 and rotary section 14 fastened on the motor 3 shaft. Stationary sections 12 and 13 are provided with pairs of openings 15 and 16, and 17 and 18, respectively, that are 90 degrees out of phase with each other. Section 14 includes slots 19 and 20 with solid portions 21 and 22 of sufficient width to block the openings in section 12 to stop motor 3. Return line 22 connects valve 10 and switch 1. Lines 23 and 24 between valve 10 and motor 3 provide a path for the fluid during the stopping operation.

In operation when switch 1 is moved to the stop position, pressure is removed from line 4 and applied to line 11. At this same time the return path to switch 1 is established via line 22. Assuming clockwise rotation of section 14 of valve 10 and that the section is in the position sho...