US4411614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable contoured insert for an extrusion die
Assignee: EIDP Inc
•
Filing: 1982-02-18
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Granted: 1983-10-25
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Expires: 2002-02-18
Abstract
Abstract An insert is sized for close-fitting reception into either a distribution channel or a standardized receptacle formed in an extrusion coating die to define a distribution channel dedicated to a particular coating fluid.
Inventors
- 👤 William D. Feathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:10
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/03; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
In an extrusion die of the type having a flow distribution channel with a boundary defining a forward edge of an essential land, the channel exhibiting a first predetermined shape and having an inlet passage communicating therewith, the improvement which comprises: an insert shaped for insertion into a close-fitting relationship with the flow distribution channel, the insert being sized so as to partially fill the flow distribution channel when received therein to define a second flow distribution channel having a second predetermined shape with the boundary of the second flow distribution channel maintaining the same forward edge on the die, the insert having an opening communicating with both the second flow distribution channel and with the inlet passage.
Claim 2
Dependent Claim
118 words
In an extrusion die of the type having a flow distribution channel with a boundary defining a forward edge of an essential land, the channel exhibiting a first predetermined shape and having an inlet passage communicating therewith, the improvement which comprises: an insert shaped for insertion into a close-fitting relationship with the flow distribution channel, the insert being sized so as to partially fill the flow distribution channel when received therein to define a second flow distribution channel having a second predetermined shape with the boundary of the second flow distribution channel maintaining the same forward edge on the die, the insert having an opening communicating with both the second flow distribution channel and with the inlet passage.
Claim 3
Dependent Claim
96 words
In an extrusion die of the type having a receptacle of standardized geometry formed therein, one boundary of the receptacle defining a forward edge of an essential land, an inlet passage for introducing a coating material, the improvement which comprises: an insert shaped for insertion into a close-fitting relationship with the receptacle, the insert partially filling the receptacle and cooperating with the boundary defining the forward edge of the essential land to define a distribution channel having a predetermined shape, the insert having an opening communicating with both the distribution channel and with the inlet passage.
Claim 4
Dependent Claim
96 words
In an extrusion die of the type having a receptacle of standardized geometry formed therein, one boundary of the receptacle defining a forward edge of an essential land, an inlet passage for introducing a coating material, the improvement which comprises: an insert shaped for insertion into a close-fitting relationship with the receptacle, the insert partially filling the receptacle and cooperating with the boundary defining the forward edge of the essential land to define a distribution channel having a predetermined shape, the insert having an opening communicating with both the distribution channel and with the inlet passage.
Claim 5
Dependent Claim
39 words
The extrusion die of claims 1 or 2 wherein the opening in the insert is in the form of a plurality of feed passages adapted to communicate with the distribution channel and with the inlet passage in the die.
Claim 6
Dependent Claim
21 words
The extrusion die of claim 3 wherein each of the plurality of feed passages communicate with the distribution channel transversely therealong.
Claim 7
Dependent Claim
28 words
The extrusion die of claim 3 wherein the plurality of feed passages communicate with the distribution channel one behind the other in the direction of coating fluid flow.
Claim 8
Dependent Claim
22 words
The extrusion die of claim 4 wherein the fluid flow length of each of the plurality of feed passages is substantially equal.
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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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |