US3841129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous, hydrostatic extrusion process and an apparatus using the same
Assignee: Kobe Steel Ltd
•
Filing: 1973-03-15
•
Granted: 1974-10-15
•
Expires: 1993-03-15
Abstract
Abstract A continuous, hydrostatic extrusion process and an apparatus therefor, wherein a stock wire is drawn through a die provided within the wall of a high pressure chamber and then force wound around a driven spool located within the chamber, after which the wire thus wound is extruded under a hydrostatic pressure through an extrusion die provided within another wall defining the chamber. Such apparatus thereby permits the continuous extrusion of a wire, i.e., the continuous feeding of a stockwire of a substantially unlimited length. In order to attain a greater percentage of reduction in cross-sectional area of the wire, heating means is provided within the chamber for heating the wire piror to extrusion. The apparatus further permits at least two stages of continuous drawing and extrusion of a stock wire by utilizing assembled units each of which incorporates the aforesaid features.
Inventors
- 👤 M Noguti
- 👤 Y Yamaguchi
- 👤 T Matsushita
- 👤 M Nishihara
- 👤 T Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:35
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/007; B21C23/008
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
81 words
A continuous, hydrostatic extrusion process, characterized in that said process comprises the steps of: continuously charging a stock wire into a high pressure chamber through sealing means by utilizing the continuous winding action of an intermediate winding means provided within said high pressure chamber; continuously winding said charged stock wire around said intermediate winding means; and continuously extruding said wound stock wire out of said chamber through an extrusion die under the influence of a hydrostatic pressure maintained within said chamber.
Claim 2
Dependent Claim
81 words
A continuous, hydrostatic extrusion process, characterized in that said process comprises the steps of: continuously charging a stock wire into a high pressure chamber through sealing means by utilizing the continuous winding action of an intermediate winding means provided within said high pressure chamber; continuously winding said charged stock wire around said intermediate winding means; and continuously extruding said wound stock wire out of said chamber through an extrusion die under the influence of a hydrostatic pressure maintained within said chamber.
Claim 3
Dependent Claim
21 words
A continuous, hydrostatic extrusion process as set forth in claim 1, wherein said stock wire is heated prior to said extrusion.
Claim 4
Dependent Claim
131 words
A continuous, hydrostatic extrusion process, characterized in that said process comprises at least two sequential stages each of which comprises: continuously charging a stock wire into a high pressure chamber through sealing means by utilizing the continuous winding action of an intermediate winding means provided within said high pressure chamber; continuously winding said charged stock wire around said intermediate winding means; and continuously extruding said wound stock wire out of said chamber and into said high pressure chamber of the subsequent stage through an extrusion die under the influence of a hydrostatic pressure; whereby said wire will be continuously extruded from one of said stages to another and ultimately extruded to the atmosphere under the influence of said hydrostatic pressure through an extrusion die within the final one of said stages.
Claim 5
Dependent Claim
131 words
A continuous, hydrostatic extrusion process, characterized in that said process comprises at least two sequential stages each of which comprises: continuously charging a stock wire into a high pressure chamber through sealing means by utilizing the continuous winding action of an intermediate winding means provided within said high pressure chamber; continuously winding said charged stock wire around said intermediate winding means; and continuously extruding said wound stock wire out of said chamber and into said high pressure chamber of the subsequent stage through an extrusion die under the influence of a hydrostatic pressure; whereby said wire will be continuously extruded from one of said stages to another and ultimately extruded to the atmosphere under the influence of said hydrostatic pressure through an extrusion die within the final one of said stages.
Claim 6
Dependent Claim
37 words
A continuous, hydrostatic extrusion process as set forth in claim 3, wherein said stock wire is heated within at least one of said stages prior to said extrusion of said wire through one of said extrusion dies.
Claim 7
Dependent Claim
88 words
A continuous, hydrostatic extrusion apparatus comprising: a high pressure chamber adapted to maintain a hydrostatic pressure medium therein; an intermediate winding means provided within said chamber for continuously winding a stock wire therearound; sealing means adapted to charge said stock wire into said high pressure chamber and conduct said wire to said winding means under the influence of the continuous rotary motion of said winding means; and an extrusion die adapted to extrude said wound wire from said high pressure chamber under the influence of said hydrostatic pressure.
Claim 8
Dependent Claim
88 words
A continuous, hydrostatic extrusion apparatus comprising: a high pressure chamber adapted to maintain a hydrostatic pressure medium therein; an intermediate winding means provided within said chamber for continuously winding a stock wire therearound; sealing means adapted to charge said stock wire into said high pressure chamber and conduct said wire to said winding means under the influence of the continuous rotary motion of said winding means; and an extrusion die adapted to extrude said wound wire from said high pressure chamber under the influence of said hydrostatic pressure.
Claim 9
Dependent Claim
43 words
A continuous, hydrostatic extrusion apparatus as set forth in claim 5, wherein said apparatus further comprises a heating means provided within said high pressure chamber and adapted to heat said stock wire prior to said extrusion of said wire through said extrusion die.
Claim 10
Dependent Claim
174 words
A continuous, hydrostatic extrusion apparatus, characterized in that said apparatus includes at least two stages each unit or stage of which comprises: a high pressure chamber adapted to maintain a hydrostatic pressure medium therein; an intermediate winding means provided within said chamber for continuously winding a stock wire therearound; sealing means adapted to charge said stock wire therethrough and into said high pressure chamber and conduct said wire to said winding means under the influence of the continuous rotary motion of said winding means; and an extrusion die adapted to extrude said wound wire from said high pressure chamber under the influence of said hydrostatic pressure, whereby said stock wire is charged through said sealing means by means of said intermediate winding means within one of said stages and is extruded through said extrusion die of said one of said stages so as to be conducted through a successing stage and ultimately be extruded to atmosphere through said extrusion die of the final one of said stages under the influence of said hydrostatic pressure.
Claim 11
Dependent Claim
174 words
A continuous, hydrostatic extrusion apparatus, characterized in that said apparatus includes at least two stages each unit or stage of which comprises: a high pressure chamber adapted to maintain a hydrostatic pressure medium therein; an intermediate winding means provided within said chamber for continuously winding a stock wire therearound; sealing means adapted to charge said stock wire therethrough and into said high pressure chamber and conduct said wire to said winding means under the influence of the continuous rotary motion of said winding means; and an extrusion die adapted to extrude said wound wire from said high pressure chamber under the influence of said hydrostatic pressure, whereby said stock wire is charged through said sealing means by means of said intermediate winding means within one of said stages and is extruded through said extrusion die of said one of said stages so as to be conducted through a successing stage and ultimately be extruded to atmosphere through said extrusion die of the final one of said stages under the influence of said hydrostatic pressure.
Claim 12
Dependent Claim
43 words
A continuous, hydrostatic extrusion apparatus, As set forth in claim 7, wherein said apparatus further comprises a heating means provided within at least one of said high pressure chamber for heating said stock wire prior to said extrusion of said wire extrusion die.
Claim 13
Dependent Claim
32 words
A continuous, hydrostatic extrusion apparatus as set forth in claim 7, wherein said extrusion die of one of said stages serves as said sealing means of a succeeding one of said stages.
Claim 14
Dependent Claim
37 words
A continuous, hydrostatic extrusion process as set forth in claim 1, wherein said sealing means is a drawing die whereby said stock wire may be continuously force drawn into said high pressure chamber through said drawing die.
Claim 15
Dependent Claim
37 words
A continuous, hydrostatic extrusion process as set forth in claim 3, wherein said sealing means is a drawing die whereby said stock wire may be continuously force drawn into said high pressure chamber through said drawing die.
Claim 16
Dependent Claim
30 words
A continuous, hydrostatic extrusion apparatus as set forth in claim 5, wherein said sealing means is a drawing die adapted to draw said stock wire into said high pressure chamber.
Claim 17
Dependent Claim
30 words
A continuous, hydrostatic extrusion apparatus as set forth in claim 7, wherein said sealing means is a drawing die adapted to draw said stock wire into said high pressure chamber.
Claim 18
Dependent Claim
31 words
A continuous, hydrostatic extrusion apparatus as set forth in claim 9, wherein said sealing means is a drawing die adapted to draw said stock wire into one of said succeeding stages.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |