Patent US4256448A successfully refreshed from Google Patents.
US4256448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller die
Assignee: Farrel Corp
•
Filing: 1979-08-13
•
Granted: 1981-03-17
•
Expires: 1999-08-13
Abstract
Abstract A roller die apparatus includes a pair of cylinder rolls which are rotatably and obliquely yieldably mounted on a frame disposed on the output end of a plastic extruding machine. The rolls are biasedly restrained in the frame to permit the obtusely directed movement thereof with respect to the direction of extruded plastic flow. This non-orthogonal movement of the cylindrical roller members facilitates adjustment and cleaning thereof.
Inventors
- 👤 George E. Carle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:04
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C43/24; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/30; B29C48/35; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
A roller die arrangement for an extrusion machine having an extrusion screw therein, said roller die arrangement comprising: a pair of cooperating rolls which between them define a nip for receiving and processing any material passed therebetween; and a support means mounted on the outlet of said extrusion machine for supporting said cooperating rolls, said support means including adjustment means to permit transverse movement of said cooperating rolls with respect to one another in said support means, said transverse movement of said cooperating rolls also being oblique to the direction of material being extruded from said extrusion screw to change the characteristics of said nip therebetween.
Claim 2
Dependent Claim
106 words
A roller die arrangement for an extrusion machine having an extrusion screw therein, said roller die arrangement comprising: a pair of cooperating rolls which between them define a nip for receiving and processing any material passed therebetween; and a support means mounted on the outlet of said extrusion machine for supporting said cooperating rolls, said support means including adjustment means to permit transverse movement of said cooperating rolls with respect to one another in said support means, said transverse movement of said cooperating rolls also being oblique to the direction of material being extruded from said extrusion screw to change the characteristics of said nip therebetween.
Claim 3
Dependent Claim
54 words
A roller die machine as recited in claim 1 wherein at least one of said cooperating rolls has a bearing at each end thereof; each bearing being disposed in a guide in said support means, said adjustment means utilizable for applying force against each bearing to cause said transverse movement in said cooperating roll.
Claim 4
Dependent Claim
68 words
A roller die machine as recited in claim 2, wherein each guide in said support means at opposite ends of said one roll is a slot directing movement of said roll; each slot accommodating transverse motion within said support means of said cooperating roll, at an angle which may range from about 15° up to about 60° from the direction of extruded material being supplied to said rolls.
Claim 5
Dependent Claim
32 words
A roller die machine as recited in claim 3, wherein the plane of transverse movement of said cooperating roll is 30° from the direction of extruded material being supplied to said rolls.
References Cited (Backward Citations)
GB173665A
Cited
GB341686A
Cited
GB404486A
Cited
GB741632A
Cited
US3115672A
Cited
US3274645A
Cited
US3366717A
Cited
US3359597A
Cited
US3483595A
Cited
US3543333A
Cited
GB1218592A
Cited
US3694120A
Cited
GB1351246A
Cited
GB1391993A
Cited
US3895898A
Cited
US3947201A
Cited
US4043731A
Cited
US4117054A
Cited
GB1526686A
Cited
GB1534905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |