Patent US3736786A successfully refreshed from Google Patents.
US3736786A
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Extruding apparatus and method
Assignee: Reynolds Metals Co
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Filing: 1971-07-09
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Granted: 1973-06-05
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Expires: 1991-07-09
Abstract
Abstract An extruding apparatus having a support for receiving and supporting a metallic billet to be extruded therefrom through a die of the apparatus that is disposed adjacent one end of the billet upon relative movement between the billet and a ram of the apparatus that is operatively associated with the billet. A shearing device is provided for removing the billet skin at the end of the billet that is to be extruded through the die while the billet is supported by the support to produce at least a scalped portion of the billet prior to the extrusion of that scalped portion of the billet through the die upon relative movement between the ram and the billet.
Inventors
- 👤 N Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:47
CPC Classifications
B; B21; B21C; B21C35/00; B21C35/04; B21C23/00; B21C23/01; B21C23/21; B21C23/212; B21C23/218
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
115 words
In an extruding apparatus having a container for receiving and supporting a billet which has opposed ends and is to be extruded therefrom through a die of the apparatus that is disposed adjacent one end of the billet upon relative movement between said billet and a ram of the apparatus that is operatively associated with said billet, the improvement comprising means for removing the billet skin at said one end of said billet while said billet is supported within said container to produce at least a scalped portion of the billet prior to the extrusion of that scalped portion of the billet through said die upon said relative movement between said ram and said billet.
Claim 2
Dependent Claim
115 words
In an extruding apparatus having a container for receiving and supporting a billet which has opposed ends and is to be extruded therefrom through a die of the apparatus that is disposed adjacent one end of the billet upon relative movement between said billet and a ram of the apparatus that is operatively associated with said billet, the improvement comprising means for removing the billet skin at said one end of said billet while said billet is supported within said container to produce at least a scalped portion of the billet prior to the extrusion of that scalped portion of the billet through said die upon said relative movement between said ram and said billet.
Claim 3
Dependent Claim
52 words
In an extruding apparatus as set forth in claim 1, the further improvement wherein said means continues to remove said billet skin from said billet prior to the thus scalped portion of the billet being extruded through said die whereby only scalped portions of said billet will be extruded through said die.
Claim 4
Dependent Claim
36 words
In an extruding apparatus as set forth in claim 1, the further improvement wherein said means completely removes said billet skin from saiD billet between said ends thereof before said billet is extruded through said die.
Claim 5
Dependent Claim
54 words
In an extruding apparatus as set forth in claim 1, the further improvement wherein said means for removing said billet skin comprises a shear ram for engaging against one of the ends of said billet and shearing an outer annular skin from said billet upon relative movement between said shear ram and said billet.
Claim 6
Dependent Claim
48 words
In an extruding apparatus as set forth in claim 4, the further improvement wherein said shear ram causes said sheared skin to extrude as an annular skin member beyond the other of said ends of said billet during said relative movement between said shear ram and said billet.
Claim 7
Dependent Claim
52 words
In an extruding apparatus as set forth in claim 5, the further improvement wherein said apparatus has a cutter adjacent the skin extruding end of said billet to longitudinally shear said annular skin member into a plurality of parts as said skin member is being extruded beyond that end of said billet.
Claim 8
Dependent Claim
35 words
In an extruding apparatus as set forth in claim 6, the further improvement wherein said skin member is being longitudinally sheared at the same end of the billet that will be extruded through said die.
Claim 9
Dependent Claim
39 words
In an extruding apparatus as set forth in claim 6, the further improvement wherein said skin member is being longitudinally sheared at the end of the billet opposite to the end thereof that will be extruded through said die.
Claim 10
Dependent Claim
43 words
In an extruding apparatus as set forth in claim 1, the further improvement wherein said die and said ram are so constructed and arranged that said billet will be directly extruded through said die upon relative movement between said billet and said ram.
Claim 11
Dependent Claim
43 words
In an extruding apparatus as set forth in claim 1, the further improvement wherein said die and said ram are so constructed and arranged that said billet will be indirectly extruded through said die upon relative movement between said billet and said ram.
Claim 12
Dependent Claim
97 words
In a method for extruding a billet having opposed ends through a die that is disposed adjacent one end of the billet upon relative movement between said billet and a ram that is operatively associated with said billet, the improvement comprising the step of removing the billet skin at said one end of said billet while said billet is supported within a container to produce at least a scalped portion of the billet prior to the extrusion of that scalped portion of the billet through said die upon said relative movement between said ram and said billet.
Claim 13
Dependent Claim
97 words
In a method for extruding a billet having opposed ends through a die that is disposed adjacent one end of the billet upon relative movement between said billet and a ram that is operatively associated with said billet, the improvement comprising the step of removing the billet skin at said one end of said billet while said billet is supported within a container to produce at least a scalped portion of the billet prior to the extrusion of that scalped portion of the billet through said die upon said relative movement between said ram and said billet.
Claim 14
Dependent Claim
62 words
In a method for extruding as set forth in claim 11, the further improvement wherein said step of removing said billet skin comprises the step of continuing to remove said billet skin from said billet prior to the thus scalped portion of the billet being extruded through said die whereby only scalped portions of said billet will be extruded through said die.
Claim 15
Dependent Claim
46 words
In a method for extruding as set forth in claim 11, the further improvement wherein said step of removing said billet skin comprises the step of completely removing said billet skin from said billet between said ends thereof before said billet is extruded through said die.
Claim 16
Dependent Claim
58 words
In a method for extruding as set forth in claim 11, the further improvement wherein said step of removing said billet skin comprises the step of engaging a shear ram against one of the ends of said billet and shearing an outer annular skin from said billet by causing relative movement between said shear ram and said billet.
Claim 17
Dependent Claim
59 words
In a method of extruding as set forth in claim 14, the further improvement wherein said step of shearing said skin from said billet by said shear ram causes said sheared skin to extrude as an annular skin member beyound the other of said ends of said billet during said relative movement between said shear ram and said billet.
Claim 18
Dependent Claim
39 words
In a method of extruding as set forth in claim 15, the further improvement of the step of longitudinally shearing said annular skin member into a plurality of parts as said skin member is being extruded beyonD said billet.
Claim 19
Dependent Claim
41 words
In a method of extruding as set forth in claim 16, the further improvement wherein said skin shearing step causes said skin member to be longitudinally sheared at the same end of the billet that will be extruded through said die.
Claim 20
Dependent Claim
45 words
In a method of extruding as set forth in claim 16, the further improvement wherein said skin shearing step causes said skin member to be longitudinally sheared at the end of the billet opposite to the end thereof that will be extruded through said die.
Claim 21
Dependent Claim
37 words
In a method of extruding as set forth in claim 11, the further improvement wherein said die and said ram will directly extrude said billet through said die upon relative movement between said billet and said ram.
Claim 22
Dependent Claim
37 words
In a method of extruding as set forth in claim 11, the further improvement wherein said die and said ram will indirectly extrude said billet through said die upon relative movement between said billet and said ram.
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |