US3901065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple aperture die
Assignee: AT&T Inc
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Filing: 1974-11-13
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Granted: 1975-08-26
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Expires: 1994-11-13
Abstract
Abstract Billet material is extruded through a die having a plurality of die apertures thereby to produce simultaneously a plurality of extruded products such as wire. The die has a conical mouth. The apertures are radially equispaced around a circle intermediate the entrance end of the die and the apex of the cone defining the mouth, the circle lying in a plane perpendicular to the longitudinal axis of the die so that all die apertures are spaced the same distance from the entrance end of the die and, consequently, all the said die apertures are spaced the same distance from the apex of the cone. The cone may be truncated.
Inventors
- 👤 Glenn Lewis Schmehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:44
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/005; B21C25/00; B21C25/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
A die comprisIng: a. a die body having an entrance end and an exit end; b. a flared mouth formed in the die body, said flared mouth converging rearwardly from the entrance end of the die, the rearward end of the flared mouth being closed; c. a plurality of die apertures extending through said die body, said die apertures being radially equispaced around a circle intermediate the entrance end of the die body and the apex of the flared mouth, the said circle lying in a plane perpendicular to the longitudinal axis of the die body so that the inlet ends of the die apertures are spaced the same distance rearwardly of the entrance end of the die body, the inlet ends of said die apertures communicating with the flared mouth of said die body.
Claim 2
Dependent Claim
135 words
A die comprisIng: a. a die body having an entrance end and an exit end; b. a flared mouth formed in the die body, said flared mouth converging rearwardly from the entrance end of the die, the rearward end of the flared mouth being closed; c. a plurality of die apertures extending through said die body, said die apertures being radially equispaced around a circle intermediate the entrance end of the die body and the apex of the flared mouth, the said circle lying in a plane perpendicular to the longitudinal axis of the die body so that the inlet ends of the die apertures are spaced the same distance rearwardly of the entrance end of the die body, the inlet ends of said die apertures communicating with the flared mouth of said die body.
Claim 3
Dependent Claim
20 words
A die as in claim 1, wherein: d. the flared mouth of the die body is defined by a cone.
Claim 4
Dependent Claim
21 words
A die as in claim 1, wherein: d. the flared mouth of the die body is truncated at its rear end.
Claim 5
Dependent Claim
33 words
A die as in claim 2, wherein: e. the flared mouth of the die body is truncated at its rear end along a plane perpendicular to the longitudinal axis of the die body.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |