Patent US5564827A successfully refreshed from Google Patents.
US5564827A
Expired / Lapsed
US
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Device for the homogenization of high-viscosity fluids
Assignee: Sulzer Chemtech AG
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Filing: 1994-09-30
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Granted: 1996-10-15
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Expires: 2014-09-30
Abstract
Abstract The device for the homogenization of high-viscosity fluids comprises static mixing elements (11, 12) and possibly filter elements (6). These elements of the device are arranged in a sleeve (13) along the sleeve axis (15). According to the invention the sleeve is composed of several parts; the elements of the device are monolithic structural members (10, 20; 60) and all or a plurality of these structural members have flange-like or nose-like parts (4; 4a, 4b). With these parts the structural members engage so as to anchor in the sleeve region between sleeve parts and form, at the same time, parts of the sleeve. The device according to the invention is provided, for instance, as a mixing head (1) in the nozzle of an injection molding machine or as a melt mixer of an extruder.
Inventors
- 👤 Arno Signer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:04
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/58; B29C45/581; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/431; B01F25/4316; B01F25/43197; B01F25/431974; B29C48/00; B29C48/25; B29C48/36; B29C48/362
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
78 words
A device for the homogenization of high-viscosity fluids comprising a sleeve having a longitudinal axis, and static mixing elements arranged in the sleeve along the longitudinal axis, the sleeve being composed of several parts, and the elements being monolithic structural members at least some of which include portions which protrude laterally with respect to the longitudinal axis and engage so as to anchor in the sleeve between the sleeve portions and thereby form additional portions of the sleeve.
Claim 2
Independent Claim
78 words
A device for the homogenization of high-viscosity fluids comprising a sleeve having a longitudinal axis, and static mixing elements arranged in the sleeve along the longitudinal axis, the sleeve being composed of several parts, and the elements being monolithic structural members at least some of which include portions which protrude laterally with respect to the longitudinal axis and engage so as to anchor in the sleeve between the sleeve portions and thereby form additional portions of the sleeve.
Claim 3
Dependent Claim
18 words
A device according to claim 1 wherein the portions are ring-shaped and extend perpendicularly to the longitudinal axis.
Claim 4
Dependent Claim
28 words
A device according to claim 2 wherein at least one of the portions is situated in a middle region of a corresponding one of the monolithic structural members.
Claim 5
Dependent Claim
35 words
A device according to claim 1 wherein at least one of the portions forms a nose-like member of an associated one of the monolithic structural members, the nose-like member extending parallel to the longitudinal axis.
Claim 6
Dependent Claim
47 words
A device according to claim 1 wherein the mixing elements comprise webs arranged in a plurality of layers along the longitudinal axis, the webs of adjacent layers crossing each other and being inclined relative to the longitudinal axis by a unitary angle of between 10° and 70°.
Claim 7
Dependent Claim
12 words
A device according to claim 5 wherein the unitary angle is 45°.
Claim 8
Dependent Claim
17 words
A device according to claim 1 wherein one of the elements of the device is a filter.
Claim 9
Dependent Claim
31 words
A device according to claim 7 wherein the filter is a rib filter comprising a plurality of spaced-apart, longitudinal ribs disposed in the path and forming passages for flowing the fluid.
Claim 10
Dependent Claim
16 words
A device according to claim 1 wherein the monolithic structural members are of a metallic alloy.
Claim 11
Dependent Claim
16 words
A device according to claim 9 wherein the monolithic structural members are made by precision casting.
Claim 12
Dependent Claim
17 words
A device according to claim 9 wherein the monolithic structural members are made by sinter injection molding.
Claim 13
Dependent Claim
15 words
A device according to claim 1 wherein the monolithic structural members are of ceramic material.
Claim 14
Dependent Claim
14 words
A device according to claim 1 wherein the monolithic structural members are of plastics.
Claim 15
Independent Claim
104 words
A device for the homogenization of high viscosity fluids comprising a plurality of static mixing units arranged end-to-end along a longitudinal axis of a flow path for the fluid, each mixing unit including a mixing element disposed in the path, at least one of the mixing units including a portion at least partially surrounding the associated mixing element and forming an outer boundary of a part of the path; and a plurality of conduit sections surrounding the path, being axially contiguous with the portion, and with the portion defining a tubular conduit extending and enveloping the mixing elements over a length of the path.
Claim 16
Independent Claim
104 words
A device for the homogenization of high viscosity fluids comprising a plurality of static mixing units arranged end-to-end along a longitudinal axis of a flow path for the fluid, each mixing unit including a mixing element disposed in the path, at least one of the mixing units including a portion at least partially surrounding the associated mixing element and forming an outer boundary of a part of the path; and a plurality of conduit sections surrounding the path, being axially contiguous with the portion, and with the portion defining a tubular conduit extending and enveloping the mixing elements over a length of the path.
Claim 17
Dependent Claim
22 words
A device according to claim 14 wherein the portion is ring-shaped and fully surrounds the at least one of the mixing elements.
Claim 18
Dependent Claim
44 words
A device according to claim 14 wherein the portion only partially surrounds the at least one of the mixing elements, and including a longitudinally oriented section which surrounds a part of the at least one of the mixing elements not surrounded by the portion.
Claim 19
Dependent Claim
23 words
A device according to claim 16 wherein the longitudinally oriented section comprises a ring-shaped sector extending over an arc of less than 360°.
Claim 20
Dependent Claim
18 words
A device according to claim 17 wherein the longitudinally oriented section comprises first and second, circumferentially spaced-apart sectors.
Claim 21
Dependent Claim
15 words
A device according to claim 14 including a plurality of mixing elements having the portion.
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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) | 1999-10-15 | 2000-04-15 | 2000-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-15 | 2004-04-15 | 2004-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-15 | 2008-04-15 | 2008-10-15 | $7700.00 | Window Closed / Lapsed |