Screw Drive
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 Craftsman Garage Door Opener 1 2 HP Screw Drive $22.88 (5 Bids) Time Remaining: 1d 4h 39m |
 Genie Screw Drive Carriage All Models 36179R 34107R $14.00 Time Remaining: 28d 23h 6m Buy It Now for only: $14.00 |
 Genie Screw Drive Carriage ALL MODELS 20414R 36179R BRAND NEW $14.00 Time Remaining: 21d 1h 43m Buy It Now for only: $14.00 |
 34107R OEM Genie Screw Drive Carriage 36179R 20414R garage door opener $14.00 Time Remaining: 27d 5h 6m Buy It Now for only: $14.00 |
 Craftsman Garage Door Opener 1 2 HP Screw Drive $31.00 (6 Bids) Time Remaining: 1d 4h 39m |
 34107R OEM Genie Screw Drive Carriage 36179R 20414R garage door opener $14.05 Time Remaining: 18d 1h 56m Buy It Now for only: $14.05 |
 Genie Garage Door Opener Screw Drive Carriage Part $12.69 Time Remaining: 12d 3h 33m Buy It Now for only: $12.69 |
 GENIE CIRCUIT BOARD 31184R WITH RECEIVER BOARD 31171R FOR SCREW DRIVE OPENER $19.99 Time Remaining: 1d 15h 22m Buy It Now for only: $29.99 |
 36179R 34107R Genie Screw Drive Carriage ALL MODELS WITH LUBRICANT $22.99 Time Remaining: 24d 12h 5m Buy It Now for only: $22.99 |
 Genie Carriage Assembly Screw Drive Garage Door Openers $9.95 Time Remaining: 1d 1h 34m Buy It Now for only: $9.95 |
 LOT OF 16 CRAFTSMAN 8 FOOT GARAGE DOOR RAIL EXTENSION SCREW DRIVE 53405 $39.99 Time Remaining: 2d 1h 27m |
 Genie Garage door opener screw drive carriage all models $11.50 Time Remaining: 11d 19h 55m Buy It Now for only: $11.50 |
 GENIE Excelerator Screw Rail Extension Kit Drive Garage Door Opener GSXL8 $14.00 Time Remaining: 13d 12h 31m Buy It Now for only: $14.00 |
 Genie 20113R Garage Door Opener Limit Switch Screw Drive PCG 600 compatible OEM $7.75 Time Remaining: 29d 13h 3m Buy It Now for only: $7.75 |
 GENIE EXCELERATOR SCREW DRIVE RAIL EXTENSION KIT $16.99 Time Remaining: 3d 18h 43m Buy It Now for only: $23.00 |
 Genie screw drive coupler 30257T garage door opener repair kit intellicode $4.50 Time Remaining: 14d 20h 8m Buy It Now for only: $4.50 |
 30257T Genie Screw Drive Coupler Genuine Genie Part Genie Garage door Opener $5.25 Time Remaining: 21d 19h 41m Buy It Now for only: $5.25 |
 GENIE SCREW DRIVE RAIL EXTENSION KIT $16.99 Time Remaining: 3d 18h 43m Buy It Now for only: $22.99 |
 NEW Genie Screw Drive Carriage All Models 36179R 34107R $14.20 Time Remaining: 28d 13h 53m Buy It Now for only: $14.20 |
 8 X 2 Tan Lox Drive Exterior Coated Wood Deck Screws 1400 10 lbs $35.99 Time Remaining: 29d 4h 40m Buy It Now for only: $35.99 |
 Genie Powerlift H4000 07 Quiet Screw Drive Garage Door Opener Brand New $99.00 (1 Bid) Time Remaining: 4d 3h 58m |
 Liftmaster Screw Drive Rail Assembly Rack 81C168 $14.99 Time Remaining: 18d 3h 31m Buy It Now for only: $14.99 |
 Stanley Garage Door Screw Drive Traveler 360 3750 49223 $39.50 Time Remaining: 15d 21h 26m Buy It Now for only: $39.50 |
 Wards 1 3 HP screw drive garage door opener only one remote for double door $20.00 Time Remaining: 4d 15h 23m Buy It Now for only: $25.00 |
 LiftMaster Screw Drive Sprocket Coupling Coupler 25C20 $7.98 Time Remaining: 10d 20h 42m Buy It Now for only: $7.98 |
 Liftmaster 41D4671 Screw Drive Limit Switch Craftsman $15.99 Time Remaining: 18d 4h 3m Buy It Now for only: $15.99 |
 Genie Universal Screw Drive Lubicant For Garage Door Openers GLU 3 $10.76 Time Remaining: 28d 14h 21m Buy It Now for only: $10.76 |
 Genie 3560 DirectLift Plus 1 2 Horsepower AC Screw Drive Garage Door Opener $79.99 Time Remaining: 4d 18h 24m |
 Chamberlain LiftMaster Sears Screw Drive Rack 81C168 $14.54 Time Remaining: 10d 20h 40m Buy It Now for only: $14.54 |
 36179R 34107R Genie Screw Drive Carriage ALL MODELS $14.00 Time Remaining: 21d 3h 57m Buy It Now for only: $14.00 |
 GENIE CIRCUIT BOARD 31184R WITH RECEIVER BOARD FOR SCREW DRIVE OPENER $9.72 Time Remaining: 5d 20h 27m Buy It Now for only: $23.72 |
 Genie Carriage Assembly Screw Drive Garage Door Openers $12.50 Time Remaining: 22d 23h 59m Buy It Now for only: $12.50 |
 Genie Screw Drive Carriage 36179R 34107R 20414R $15.59 Time Remaining: 25d 20h 9m Buy It Now for only: $15.59 |
 LOT OF 23 GENIE GARAGE DOOR SCREW DRIVE RAIL EXT KIT GSXL8 $49.99 Time Remaining: 6d 1h 48m |
 4 pound approximately 670 p 8 x 1 3 4 flat head square drive dry wall screw $13.50 Time Remaining: 14d 17h 24m Buy It Now for only: $13.50 |
 Genie Screw Drive Carriage All Models 36179R 34107R $14.20 Time Remaining: 19d 1h 45m Buy It Now for only: $14.20 |
 LiftMaster 3240 1 2HP Screw Drive Operator w o rail NEW $90.00 Time Remaining: 6d 21h Buy It Now for only: $165.00 |
 Genie screw drive coupler 30257T garage door opener repair kit intellicode OEM $4.94 Time Remaining: 15d 12h 20m Buy It Now for only: $4.94 |
 8 x 2 1 2 Exterior Coated 2 Phillips Drive Wood Deck Screws 1000 10 lbs $32.99 Time Remaining: 22d 2h 32m Buy It Now for only: $32.99 |
 10 x 2 1 2 Gray T 20 Star Drive Composite Decking Screws 1000 11 lbs $37.99 Time Remaining: 13d 1h 35m Buy It Now for only: $37.99 |
 9 x 2 3 4 Tan 2 Square Drive Type 17 Composite Decking Screws 1500 19 lbs $0.99 (1 Bid) Time Remaining: 1d 2m |
 GENIE 1560 DIRECT LIFT SCREW DRIVE GARAGE DOOR OPENER 1 2HP IDEAL FOR HEAVY DOOR $241.99 Time Remaining: 15d 21h 32m Buy It Now for only: $241.99 |
 Liftmaster Screw Drive Rail Sprocket Coupling Coupler $7.99 Time Remaining: 18d 3h 37m Buy It Now for only: $7.99 |
 Square drive 6 X 3 8 bronze color screws $2.99 Time Remaining: 1d 1h 11m Buy It Now for only: $3.35 |
 Genie Screw Drive Coupler 30257T $3.50 Time Remaining: 8d 1m Buy It Now for only: $3.50 |
 Genie Screw Drive Coupler LOW COST FREE SHIPPING $4.95 Time Remaining: 13d 3h 2m Buy It Now for only: $4.95 |
 275 Flat Head square drive 10x5 screws $40.00 Time Remaining: 1d 19h 45m Buy It Now for only: $75.00 |
 3 Sq Drive Exterior Coated Wood Deck Screws 800 $40.84 Time Remaining: 22h 44m Buy It Now for only: $40.84 |
 36179R 34107R Genie Screw Drive Carriage All Models $18.99 Time Remaining: 21d 20h 16m Buy It Now for only: $18.99 |
 Genie 4060 Excelerator Quite Screw Drive Garage Door Opener With Remote Control $99.99 Time Remaining: 2d 4h 11m |
 10 x 2 3 4 SQ Drive Exterior Wood Deck Screws 1500 $73.18 Time Remaining: 16d 23h 34m Buy It Now for only: $73.18 |
 Kreg 700 Count 8 x 2 Square Drive Pan Head Deck Screws Brown SDK C2W 700 $37.49 Time Remaining: 27d 22h 2m Buy It Now for only: $37.49 |
 Chamberlain LiftMaster Sears Craftsman Screw Drive Rack 81C168 $14.57 Time Remaining: 12d 11h 2m Buy It Now for only: $14.57 |
 Box of Combo Drive Sheet Metal Screws $10.75 Time Remaining: 2d 15h 12m Buy It Now for only: $13.75 |
 GENE SCREW DRIVE OPENER RECEIVER BOARD $25.75 Time Remaining: 25d 3h 34m Buy It Now for only: $25.75 |
 25C20 Liftmaster Screw Drive Rail Sprocket Coupling Coupler Craftsman $7.99 Time Remaining: 5d 13h 47m Buy It Now for only: $7.99 |
 9 x 2 3 4 Tan 2 Square Drive Type 17 Composite Deck Screws 800 10 lbs $0.99 (1 Bid) Time Remaining: 3d 17h 24m |
 9 x 3 Tan Brown Type 17 2 Square Drive Composite Deck Screws 1500 23 lb $56.99 Time Remaining: 12d 3h 51m Buy It Now for only: $56.99 |
 GENIE Garage Door SCREW DRIVE Lubricant 3 tube Pack $8.49 Time Remaining: 28d 14h 27m Buy It Now for only: $8.49 |
 Bosch 38 Piece Magna Screw driving Bit Set MODEL T4038 NEW MUST HAVE $11.95 Time Remaining: 4d 1h 36m |
 Genie GLU 3 Screw Drive Garage Door Opener Lubricant $8.28 Time Remaining: 10d 18h 57m Buy It Now for only: $8.28 |
 30257T Genie Screw Drive Coupler cupler $4.50 Time Remaining: 3d 1h 29m Buy It Now for only: $4.50 |
 Craftsman Garage Door Opener Header Door Brackets Screw Drive Opener $14.00 Time Remaining: 4d 2h 46m Buy It Now for only: $19.00 |
 8 x 2 1 2 Square Drive Exterior Coated Wood Deck Screws 2500 23 lbs $66.49 Time Remaining: 14d 4h 2m Buy It Now for only: $66.49 |
 36179R 34107R Genie Screw Drive Carriage ALL MODELS $14.20 Time Remaining: 19d 1h 44m Buy It Now for only: $14.20 |
 10 x 3 Red T 20 Star Drive Composite Decking Screws 700 10 lbs $36.09 Time Remaining: 13d 1h 44m Buy It Now for only: $36.09 |
 1000 Pcs 10 X 2 Lox Drive 305 Stainless Steel Wood Deck Screws Over 10 Pounds $0.99 (1 Bid) Time Remaining: 4d 17h 54m |
 Lot 200 Pan Head Tapping Screws 10 x 5 8 Phillips Drive Sharp Point Zinc Steel $7.99 Time Remaining: 6d 23h 53m Buy It Now for only: $7.99 |
 LiftMaster Sears Screw Drive Trolley Assembly 41C4677 $21.95 Time Remaining: 10d 20h 52m Buy It Now for only: $21.95 |
 10 x 2 3 4 SQ Drive Ceramic Coated Exterior Wood Deck Screws 13 lbs 900 $0.99 Time Remaining: 6d 2h 39m |
 10 x 3 1 2 Exterior Coated 2 Phillips Drive Wood Deck Screws 500 95 lbs $29.99 Time Remaining: 22d 3h 1m Buy It Now for only: $29.99 |
 Genie GSX8 Intellicode Screw Drive Rail Extension Kit 8 Door Height New $10.20 Time Remaining: 24d 16h 41m Buy It Now for only: $10.20 |
 1500 Pcs 10 x 2 3 4 2 SQ Drive Ceramic Exterior Wood Deck Screws 22 Lbs $0.99 Time Remaining: 6d 16h 53m |
 ACR Bugle Head 2 Phillips Drive Deck Screws 2 1 2 lo $4.99 Time Remaining: 23d 22h 47m Buy It Now for only: $4.99 |
 GENIE Intellicode Screw Drive Rail Extension Kit Garage Door Opener GSX8 $14.00 Time Remaining: 13d 12h 32m Buy It Now for only: $14.00 |
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Twin screw extruder for drive system
A twin screw extruder drive system includes a pair of parallel juxtaposed output shafts each of which is fixed to a sun gear of a planetary gear set. Each gear set includes a plurality of planet idler gears which are only rotatable about their axes and engage both the sun gear and a ring gear. Symmetrically disposed about the circumference of the ring gear are at least two drive pinions. The two gear sets have parallel axes and are axially offset from one another with the output shafts extending through a space between the planet gears of the other gear set. In one embodiment each drive pinion is driven by a separate electric motor and all motors are electronically and mechanically speed synchronized. A single electric motor is employed to drive all drive pinions in an alternate configuration.
A drive system suitable for a twin screw extruder having a pair of adjacent parallelaxis extruder screws, the drive system including two adjacent parallel axis output shafts, each engageable with one of the twin extruder screw and separate gear train means for driving each output shaft, the gear train means having parallel axes which areadjacent one another, one gear train means being spaced axially behind the other gear train means, each gear train means including a planetary gear set, each planetary gear set comprising a ring gear, a plurality of drive pinions, means journalling thedrive pinions for rotation about fixed axes, the drive pinions being in driving engagement with the ring gear, the drive pinions being equidistantly spaced from one another along the periphery of the ring gear, each planetary gear set further including aplurality of planet gears and a sun gear, the planet gears being equidistantly spaced from one another along the periphery of the ring gear, means journalling each planet gear for rotation about a fixed axis, the sun gear axes of the two planetary gearsets being adjacent and parallel to one another and means interconnecting the sun gear of each gear set with one of the output shafts whereby relatively high driving torques are provided.
A drive system suitable for driving a twin screw extruder as constructed in accordance with claim 1 further including bearing-free means for supporting the ring gear for rotation about the axis of the sun gear, the bearing-free supportingmeans comprising the engagement between the ring gear and the planet gears.
A drive system suitable for a twin screw extruder as constructed in accordance with claim 1 further including separate electric motor means in driving engagement with each drive pinion.
About the Author
A twin screw extruder drive system includes a pair of parallel juxtaposed output shafts each of which is fixed to a sun gear of a planetary gear set. Each gear set includes a plurality of planet idler gears which are only rotatable about their axes and engage both the sun gear and a ring gear.