US3824875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for twin screw extruder
Assignee: Egan Machinery Co
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Filing: 1973-05-21
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Granted: 1974-07-23
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Expires: 1993-05-21
Abstract
Abstract Drive apparatus for imparting rotation in opposite directions to a pair of output shafts which are rotatable about longitudinal axes that are parallel and in close proximity to each other. The drive apparatus is comprised of a first train of pinions and gears, including an input pinion rotatable with an input shaft, a first intermediate gear that meshes with the input pinion and is mounted on a shaft which is provided with a drive pinion that meshes with a planetary ring gear and with a sun gear within the confines of the ring gear, and an output pinion that meshes with the sun gear and with the ring gear and is rotatable with one of the output shafts. The drive apparatus is also comprised of a second train of pinions and gears which is similar to the first train and includes a second intermediate gear that meshes with the first intermediate gear and an output pinion that is rotatable with the other output shaft. The pinion and gear trains are actuated simultaneously and in unison by a single prime mover connected to the input shaft of one of the trains or by a pair of prime movers, each of which is connected to the input shaft of a corresponding train.
Inventors
- 👤 W Willert
- 👤 J Ro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:52
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/46; B; B29; B29C; B29C48/00; B29C48/25; B29C48/252; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/241; F16H37/00; B29C48/03; F16H2700/00; F16H2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084; Y10T74/19126; Y10T74/19135; Y10T74/19628
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
297 words
Drive apparatus for imparting rotation in opposite directions to first and second output shafts which are rotatable about corresponding longitudinal axes that are parallel and in close proximity to each other comprising support means, a first intermediate shaft carried by the support means, actuating means including a prime mover for imparting rotation to the first intermediate shaft, a first intermediate gear mounted on and rotatable with the first intermediate shaft, a first drive pinion mounted on and rotatable with the first intermediate shaft, a first planetary ring gear carried by and rotatable relative to the support means and meshing with the first drive pinion, a first sun gear shaft carried by the support means, a first sun gear mounted on and rotatable with the first sun gear shaft and meshing with the first drive pinion, said first output shaft being carried by the support means, a first output gear mounted on and rotatable with the first output shaft and meshing with the first internal gear and with the first sun gear, a second intermediate shaft carried by the support means, a second intermediate gear and a second drive pinion mounted on and rotatable with the second intermediate shaft, said second intermediate gear meshing with the first intermediate gear, a second planetary ring gear carried by and rotatable relative to the support means and meshing with the second drive pinion, a second sun gear shaft carried by the support means, a second sun gear mounted on and rotatable with the second sun gear shaft and meshing with the second drive pinion, said second output shaft being carried by the support means and a second output gear mounted on and rotable with the second output shaft and meshing with both the secOnd ring gear and the second sun gear.
Claim 2
Dependent Claim
297 words
Drive apparatus for imparting rotation in opposite directions to first and second output shafts which are rotatable about corresponding longitudinal axes that are parallel and in close proximity to each other comprising support means, a first intermediate shaft carried by the support means, actuating means including a prime mover for imparting rotation to the first intermediate shaft, a first intermediate gear mounted on and rotatable with the first intermediate shaft, a first drive pinion mounted on and rotatable with the first intermediate shaft, a first planetary ring gear carried by and rotatable relative to the support means and meshing with the first drive pinion, a first sun gear shaft carried by the support means, a first sun gear mounted on and rotatable with the first sun gear shaft and meshing with the first drive pinion, said first output shaft being carried by the support means, a first output gear mounted on and rotatable with the first output shaft and meshing with the first internal gear and with the first sun gear, a second intermediate shaft carried by the support means, a second intermediate gear and a second drive pinion mounted on and rotatable with the second intermediate shaft, said second intermediate gear meshing with the first intermediate gear, a second planetary ring gear carried by and rotatable relative to the support means and meshing with the second drive pinion, a second sun gear shaft carried by the support means, a second sun gear mounted on and rotatable with the second sun gear shaft and meshing with the second drive pinion, said second output shaft being carried by the support means and a second output gear mounted on and rotable with the second output shaft and meshing with both the secOnd ring gear and the second sun gear.
Claim 3
Dependent Claim
24 words
Drive apparatus according to claim 1 further comprising second actuating means including a second prime mover for imparting rotation to the second intermediate shaft.
Claim 4
Dependent Claim
50 words
Drive apparatus according to claim 1 further comprising a first input shaft carried by the support means and connected to and rotatable by the prime mover, and a first input pinion mounted on and rotatable with the first input shaft, said first input pinion meshing with the first intermediate gear.
Claim 5
Dependent Claim
50 words
Drive apparatus according to claim 3, further comprising a second input shaft carried by the support means, a second prime mover for imparting rotation to the second input shaft and a second input pinion mounted on and rotatable with the second input shaft and meshing with the second intermediate gear.
Claim 6
Dependent Claim
88 words
Drive apparatus according to claim 3 wherein the support means comprises a housing including a horizontally disposed body having an opening extending through and between its front and rear ends, front cover means secured to the front end of the body and rear cover means secured to the rear end of the body, and wherein said pinions and gears are positioned in the body opening, said first and second output shafts extend through the front cover means and said first input shaft extends through the rear cover means.
Claim 7
Dependent Claim
90 words
Drive apparatus according to claim 4 wherein the support means comprises a housing including a horizontally disposed body having an opening extending through and between its front and rear ends, front cover means secured to the front end of the body and rear cover means secured to the rear end of the body, and wherein said pinions and gears are positioned in the body opening, said first and second output shafts extend through the front cover means and said first and second input shafts extend through the rear cover means.
Claim 8
Dependent Claim
23 words
Drive apparatus according to claim 1 in combination with an extruder including twin screws respectively coupled to the first and second output shafts.
Claim 9
Dependent Claim
23 words
Drive apparatus according to claim 3 in combination with an extruder including twin screws respectively coupled to the first and second output shafts.
Claim 10
Dependent Claim
23 words
Drive apparatus according to claim 5 in combination with an extruder including twin screws respectively coupled to the first and second output shafts.
Claim 11
Dependent Claim
25 words
The combination defined by claim 7 further comprising means carried by the housing for absorbing thrust loads created in the output shafts during normal operation.
Claim 12
Dependent Claim
25 words
The combination defined by claim 8 further comprising means carried by the housing for absorbing thrust loads created in the output shafts during normal operation.
Claim 13
Dependent Claim
25 words
The combination defined by claim 9 further comprising means carried by the housing for absorbing thrust loads created in the output shafts during normal operation.
References Cited (Backward Citations)
US2892362A
Cited
US3592078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |