Browse Prior Art Database

Reverse Drive Train

IP.com Disclosure Number: IPCOM000075181D
Original Publication Date: 1971-Aug-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Hogg, M: AUTHOR [+2]

Abstract

This reverse drive train provides forward and reverse drive simultaneously. Motor 1 drives shaft 2. Shaft 2 is supported by bearing support 3. Drive pulley 19 secured to shaft 2 rotates in the normal direction. O ring tires 5 and 12 are for frictional drive purposes only. A squared section of shaft 2 fits in a square hole in drive flange 4, thereby driving it in the same direction as drive pulley 19. Ball bearing housing 21 is secured in a stationary position allowing a series of ball bearings 7 to rotate about their own axis, but not about the shaft. Pressure rings 6 and 8 are drawn towards one another by screws 10 and 23 in such a manner that drive flanges 4 and 25 exert pressure on steel balls 7.

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Reverse Drive Train

This reverse drive train provides forward and reverse drive simultaneously. Motor 1 drives shaft 2. Shaft 2 is supported by bearing support 3. Drive pulley 19 secured to shaft 2 rotates in the normal direction. O ring tires 5 and 12 are for frictional drive purposes only. A squared section of shaft 2 fits in a square hole in drive flange 4, thereby driving it in the same direction as drive pulley 19. Ball bearing housing 21 is secured in a stationary position allowing a series of ball bearings 7 to rotate about their own axis, but not about the shaft. Pressure rings 6 and 8 are drawn towards one another by screws 10 and 23 in such a manner that drive flanges 4 and 25 exert pressure on steel balls 7. Rotating drive flange 4 causes rotation of steel balls 7 which, in turn, causes drive flange 25 to rotate in the opposite direction from drive flange 4. A square section of shaft 28 fits in a square hole of drive flange 25, thereby causing rotation of shaft 28. Drive pulley 26 secured to shaft 28 is rotated accordingly, thus providing a simultaneous forward and reverse rotating movement.

Two sets of steel balls 9 and 22 transmit the pressure from pressure rings 6 and 8 to driving flanges 4 and 25. This provides rolling friction instead of sliding friction between the pressure rings and their respective driving flanges. Two spacer rings 20 and 24 maintain the relative position of these two sets of steel balls.

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