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US3870453A
Expired / Lapsed
US
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Adjustment mechanism for an extruder die
Assignee: National Standard Co
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Filing: 1973-10-15
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Granted: 1975-03-11
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Expires: 1993-10-15
Abstract
Abstract The uniform thickness of a continuous strip of extruded material is now maintained by passing the extrudate through a die having an adjustable die opening, gauging the thickness of the strip and varying the width of the die opening to maintain the strip at a desired thickness along its length. A die plate displacement means controls the position of a movable die plate relative to a stationary die plate to adjust the width of the die opening, and a manual setting means is operatively connected to the die plate displacement means in such a manner to effect incremental displacement of the movable die plate towards or away from the stationary die plate.
Inventors
- 👤 Walter B Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:40
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/221; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/12; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/313; B29C48/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other disposed in a sliding relation toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by sliding displacement of said other plates, comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, setting means operatively connected to said die plate displacement means for effecting movement of said oTher die plate to selectively set the width of said die opening, gauge means for providing a visual indication of the amount of displacement of said other die plate, said gauge means comprising an elongated incremental scale mounted on said extruder and a pointer operatively connected to said setting means in a manner to traverse across said scale in proportion to displacement of said other die plate.
Claim 2
Dependent Claim
170 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other disposed in a sliding relation toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by sliding displacement of said other plates, comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, setting means operatively connected to said die plate displacement means for effecting movement of said oTher die plate to selectively set the width of said die opening, gauge means for providing a visual indication of the amount of displacement of said other die plate, said gauge means comprising an elongated incremental scale mounted on said extruder and a pointer operatively connected to said setting means in a manner to traverse across said scale in proportion to displacement of said other die plate.
Claim 3
Dependent Claim
170 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other disposed in a sliding relation toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by sliding displacement of said other plates, comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, setting means operatively connected to said die plate displacement means for effecting movement of said oTher die plate to selectively set the width of said die opening, gauge means for providing a visual indication of the amount of displacement of said other die plate, said gauge means comprising an elongated incremental scale mounted on said extruder and a pointer operatively connected to said setting means in a manner to traverse across said scale in proportion to displacement of said other die plate.
Claim 4
Dependent Claim
170 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other disposed in a sliding relation toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by sliding displacement of said other plates, comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, setting means operatively connected to said die plate displacement means for effecting movement of said oTher die plate to selectively set the width of said die opening, gauge means for providing a visual indication of the amount of displacement of said other die plate, said gauge means comprising an elongated incremental scale mounted on said extruder and a pointer operatively connected to said setting means in a manner to traverse across said scale in proportion to displacement of said other die plate.
Claim 5
Dependent Claim
220 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other disposed in a sliding relation toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by sliding displacement of said other plate, comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, setting means operatively connected to said die plate displacement means for effecting movement of said other die plate to selectively set the width of said die opening, and wherein said other die plate includes an elongated slot extending perpendicular to a path of sliding movement and wherein said die plate displacement means comprises a die plate control member having a base rod portion pivotally mounted on an axis extending parallel to the plane of said other die plate and having a die plate engaging portion extending radially from said base rod portion through said elongated slot, said base rod portion including a shank portion extending radially away from said base rod portion, and a coupler block pivotally mounted adjacent the outer end of the shank portion for connection with said setting means.
Claim 6
Dependent Claim
220 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other disposed in a sliding relation toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by sliding displacement of said other plate, comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, setting means operatively connected to said die plate displacement means for effecting movement of said other die plate to selectively set the width of said die opening, and wherein said other die plate includes an elongated slot extending perpendicular to a path of sliding movement and wherein said die plate displacement means comprises a die plate control member having a base rod portion pivotally mounted on an axis extending parallel to the plane of said other die plate and having a die plate engaging portion extending radially from said base rod portion through said elongated slot, said base rod portion including a shank portion extending radially away from said base rod portion, and a coupler block pivotally mounted adjacent the outer end of the shank portion for connection with said setting means.
Claim 7
Dependent Claim
54 words
An adjustment mechanism as defined in claim 2 wherein said setting means comprises an elongated shaft member having a handwheel fixed to its upper end and having its lower end in threaded engagement with said coupler block and means for pivotally mounting the upper end of said shaft member in a free turning relation.
Claim 8
Dependent Claim
160 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other plate disposed in a sliding relationship toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by the sliding displacement of said other plate, said other die plate having an elongated slot, said adjustment means comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, said die plate displacement means including a die plate engaging portion extending through said elongated slot in said other plate, and manual setting means operatively connected to said die plate displacement means for effecting movement of said die plate engaging portion in a manner to incrementally move said other die plate toward or away from said one die plate.
Claim 9
Dependent Claim
160 words
An adjustment mechanism for use with an extruder having a die supporting means for supporting a two-plate die at the discharge outlet of said extruder with one plate held stationary and the other plate disposed in a sliding relationship toward and away from said one plate, the opposing marginal edge of said plates defining a die opening whose width dimension varies by the sliding displacement of said other plate, said other die plate having an elongated slot, said adjustment means comprising a die plate displacement means for controlling the position of said other die plate relative to said one die plate, said die plate displacement means including a die plate engaging portion extending through said elongated slot in said other plate, and manual setting means operatively connected to said die plate displacement means for effecting movement of said die plate engaging portion in a manner to incrementally move said other die plate toward or away from said one die plate.
Claim 10
Dependent Claim
27 words
Ad adjustment mechanism as defined in claim 4, further comprising gauge means for providing a visual indication of the amount of displacement of said other die plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |