Patent EP0500437B1 successfully refreshed from Google Patents.
Patent US3601370A successfully refreshed from Google Patents.
US3601370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously operating mixing and kneading machine
Assignee: Buss AG
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Filing: 1968-11-18
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Granted: 1971-08-24
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Expires: 1988-11-18
Abstract
Abstract Continuously operating mixing and kneading machine embodying a continuous, rotating, reciprocating worm shaft mounted in a housing, which machine is divided into a feeder zone with continuous worm channels; an initial pressure buildup zone with discontinuous worm channels and with kneading dogs additionally mounted in the housing; a detensioning zone and a reintroduction zone, both with continuous worm channels; and a second pressure buildup zone with discontinuous worm channels and with kneading dogs mounted additionally in the housing.
Inventors
- 👤 Erwin Ruettener
- 👤 Fritz Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/426; B29C; B29C48/00; B29C48/25; B29C48/268; B29C48/36; B29C48/395; B29C48/50; B29C48/68; B29C48/685; B29C48/687; B29C48/76; B29C48/765; B29C48/766; B29C48/767; B29C48/03; B29C48/45
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
230 words
A continuously operating mixing and kneading machine comprising: 1. a rotating and reciprocating worm shaft, 2. a housing surrounding said shaft provided with a feeder opening, a degassing well adapted for attachment to vacuum means, 3. a feeder zone below said feeder opening in said housing provided with continuous worm channels, 4. an initial pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs attached and mounted to the inner wall of said housing to build up the mixing pressure from said feeder zone, 5. a detensioning zone formed by continuous worm channels on said shaft which follows the pressure buildup and releases the pressure buildup, 6. a reintroduction zone formed by continuous worm channels on said shaft following said detensioning zone, said reintroduction zone being formed with a cut away portion of the interior wall of said housing in the form of a segment of a circular cylinder having an axis thereof which is at an angle in relation to the worm shaft and lies in the direction of said degassing well, the edge of said segment facing the interior wall of the degassing well being rounded off with a radius tapering off in the direction of rotation of the shaft of zero and 7. a second pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs mounted within the housing.
Claim 2
Dependent Claim
230 words
A continuously operating mixing and kneading machine comprising: 1. a rotating and reciprocating worm shaft, 2. a housing surrounding said shaft provided with a feeder opening, a degassing well adapted for attachment to vacuum means, 3. a feeder zone below said feeder opening in said housing provided with continuous worm channels, 4. an initial pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs attached and mounted to the inner wall of said housing to build up the mixing pressure from said feeder zone, 5. a detensioning zone formed by continuous worm channels on said shaft which follows the pressure buildup and releases the pressure buildup, 6. a reintroduction zone formed by continuous worm channels on said shaft following said detensioning zone, said reintroduction zone being formed with a cut away portion of the interior wall of said housing in the form of a segment of a circular cylinder having an axis thereof which is at an angle in relation to the worm shaft and lies in the direction of said degassing well, the edge of said segment facing the interior wall of the degassing well being rounded off with a radius tapering off in the direction of rotation of the shaft of zero and 7. a second pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs mounted within the housing.
Claim 3
Dependent Claim
19 words
a housing surrounding said shaft provided with a feeder opening, a degassing well adapted for attachment to vacuum means,
Claim 4
Dependent Claim
19 words
a housing surrounding said shaft provided with a feeder opening, a degassing well adapted for attachment to vacuum means,
Claim 5
Dependent Claim
35 words
A machine as claimed in claim 1 including channel occlusion elements which are rotatably moveable in And through the discontinuous worm channels to aid in compacting and reducing the volume of the mixture being kneaded.
Claim 6
Dependent Claim
15 words
a feeder zone below said feeder opening in said housing provided with continuous worm channels,
Claim 7
Dependent Claim
15 words
a feeder zone below said feeder opening in said housing provided with continuous worm channels,
Claim 8
Dependent Claim
36 words
an initial pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs attached and mounted to the inner wall of said housing to build up the mixing pressure from said feeder zone,
Claim 9
Dependent Claim
36 words
an initial pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs attached and mounted to the inner wall of said housing to build up the mixing pressure from said feeder zone,
Claim 10
Dependent Claim
21 words
a detensioning zone formed by continuous worm channels on said shaft which follows the pressure buildup and releases the pressure buildup,
Claim 11
Dependent Claim
21 words
a detensioning zone formed by continuous worm channels on said shaft which follows the pressure buildup and releases the pressure buildup,
Claim 12
Dependent Claim
98 words
a reintroduction zone formed by continuous worm channels on said shaft following said detensioning zone, said reintroduction zone being formed with a cut away portion of the interior wall of said housing in the form of a segment of a circular cylinder having an axis thereof which is at an angle in relation to the worm shaft and lies in the direction of said degassing well, the edge of said segment facing the interior wall of the degassing well being rounded off with a radius tapering off in the direction of rotation of the shaft of zero and
Claim 13
Dependent Claim
98 words
a reintroduction zone formed by continuous worm channels on said shaft following said detensioning zone, said reintroduction zone being formed with a cut away portion of the interior wall of said housing in the form of a segment of a circular cylinder having an axis thereof which is at an angle in relation to the worm shaft and lies in the direction of said degassing well, the edge of said segment facing the interior wall of the degassing well being rounded off with a radius tapering off in the direction of rotation of the shaft of zero and
Claim 14
Dependent Claim
20 words
a second pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs mounted within the housing.
Claim 15
Dependent Claim
20 words
a second pressure buildup zone formed by discontinuous worm channels on said shaft and kneading dogs mounted within the housing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |