US3795456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm extruder with built-on transmission
Assignee: Rheinstahl AG
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Filing: 1972-07-19
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Granted: 1974-03-05
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Expires: 1992-07-19
Abstract
Abstract A worm extruder with built-on transmission, in which the output shaft of the transmission drives the extrusion worm which is rotatably journaled in a housing which is connected to the transmission housing through the intervention of a plate between which latter and a pressure member there is mounted a thrust bearing, said pressure member being connected for rotation either with and to the worm, or with and to the output shaft.
Inventors
- 👤 H Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:03
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/241; B29; B29C; B29C48/00; B29C48/25; B29C48/252; F; F16; F16C; F16C19/00; F16C19/22; F16C19/30; F16C19/54; B29C48/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
A worm extruder which includes in combination: housing means having an extrusion opening, a worm rotatably journaled in said housing means, a pressure member having an opening in axial alignment with said worm and being arranged at that end of said worm which is remote from said extrusion opening, said pressure member being rotatably connected to said worm for rotating the latter, plate means having a passage therethrough in substantially axial alignment with said worm and being arranged in axially spaced relationship to said pressure member, means connecting said plate means directly to said housing means for axial pressure bearing engagement so that drive construction remains free of return pressure forces of said worm, antifriction thrust bearing means interposed between said pressure member and said plate means, transmission means connected to said plate means and including an output shaft drivingly connected to said pressure member for driving the latter and thereby said worm whereby the axial reaction force of said worm during operation thereof is conveyed back to said housing means through said pressure member and said thrust bearing means and said plate means.
Claim 2
Dependent Claim
184 words
A worm extruder which includes in combination: housing means having an extrusion opening, a worm rotatably journaled in said housing means, a pressure member having an opening in axial alignment with said worm and being arranged at that end of said worm which is remote from said extrusion opening, said pressure member being rotatably connected to said worm for rotating the latter, plate means having a passage therethrough in substantially axial alignment with said worm and being arranged in axially spaced relationship to said pressure member, means connecting said plate means directly to said housing means for axial pressure bearing engagement so that drive construction remains free of return pressure forces of said worm, antifriction thrust bearing means interposed between said pressure member and said plate means, transmission means connected to said plate means and including an output shaft drivingly connected to said pressure member for driving the latter and thereby said worm whereby the axial reaction force of said worm during operation thereof is conveyed back to said housing means through said pressure member and said thrust bearing means and said plate means.
Claim 3
Dependent Claim
21 words
A worm extruder in combination according to claim 1, in which said output shaft is in axial alignment with said worm.
Claim 4
Dependent Claim
40 words
A worm extruder in combination according to claim 1, in which said pressure member has that portion thereof which is connected to said worm for rotating the latter provided with splined teeth meshing with a splined section of said worm.
Claim 5
Dependent Claim
39 words
A worm extruder in combination according to claim 1, in which said pressure member has that portion thereof which is drivingly connected to said output shaft provided with splined teeth engaging a correspondingly splined portion of said output shaft.
Claim 6
Dependent Claim
200 words
A worm extruder which includes in combination: housing means having an extrusion opening, a worm rotatably journaled in said housing means and having a splined section at that end portion thereof which is remote from said extrusion opening, a pressure member having an opening in axial alignment with said worm and being arranged at that end of said worm which is remote from said extrusion opening, plate means having a passage therethrough in substantially axial alignment with said worm and being arranged in axially spaced relationship to said pressure member, means connecting said plate means directly to said housing means, antifriction thrust bearing means interposed directly between said pressure member and said plate means, and transmission means connected to said plate means and including an output shaft having a hollow end provided with inner splined teeth meshing with and receiving said splined section of said worm, the outer periphery of said hollow end of said output shaft having said pressure member connected thereto for rotation with said output shaft whereby the axial reaction force of said worm during operation thereof is conveyed back only to said housing means through said pressure member and said bearing means and said plate means.
Claim 7
Dependent Claim
200 words
A worm extruder which includes in combination: housing means having an extrusion opening, a worm rotatably journaled in said housing means and having a splined section at that end portion thereof which is remote from said extrusion opening, a pressure member having an opening in axial alignment with said worm and being arranged at that end of said worm which is remote from said extrusion opening, plate means having a passage therethrough in substantially axial alignment with said worm and being arranged in axially spaced relationship to said pressure member, means connecting said plate means directly to said housing means, antifriction thrust bearing means interposed directly between said pressure member and said plate means, and transmission means connected to said plate means and including an output shaft having a hollow end provided with inner splined teeth meshing with and receiving said splined section of said worm, the outer periphery of said hollow end of said output shaft having said pressure member connected thereto for rotation with said output shaft whereby the axial reaction force of said worm during operation thereof is conveyed back only to said housing means through said pressure member and said bearing means and said plate means.
References Cited (Backward Citations)
US3375549A
Cited
US3407439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |