Patent US3874207A successfully refreshed from Google Patents.
US3874207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion apparatus
Assignee: Individual
•
Filing: 1967-02-01
•
Granted: 1975-04-01
•
Expires: 1987-02-01
Abstract
Abstract An extrusion apparatus and method employing one or more forms of auxilliary energy to effect, enhance or improve extrusion and the product formed therefrom. The auxilliary energy is imparted to the extrusion material and the shaping apparatus therefore by means of electrical coils and/or other transducers. The coils or transducers may be disposed within or surrounding one or more of the components of the extrusion apparatus and may be operated continuously or intermittently in a predetermined manner such as by programming the energization thereof to predeterminately affect the material being extruded.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:59
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/26; B21; B21C; B21C23/00; B21C23/009; B21C23/02; B21C23/04; B21C23/08; B21C23/085; B21C25/00; B21C25/08; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C48/00; B29C48/14; B29C48/25; B29C48/36; B29C48/475; B29C48/03; B29C48/06; B29C48/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
199 words
An extrusion apparatus comprising in combination: an extrusion die, an extrusion chamber connected to said extrusion die, piston means for feeding an extrusion material to be shaped in said die from said chamber to said die, said die defined by a passageway and an opening from which the extrusion shaped in said die may pass from said die, means for closing said die opening to prevent the flow of extrusion material from said die, means for imparting oscillatory movement to said piston means while retaining a predetermined quantity of extrusion material disposed between said piston means and said die to cause said piston means to apply a series of impact forces to said predetermined quantity of extrusion material and while said means for closing said die opening is operatively closing said die opening so as to intermittently work said predetermined quantity of extrusion material while it is held within said chamber and said die, and means for operating said die closing means to an open condition so as to permit movement of said predetermined quantity of extrusion material from said die after said intermittently applied forces have predeterminately worked said extrusion material within said extrusion chamber and said die.
Claim 2
Dependent Claim
199 words
An extrusion apparatus comprising in combination: an extrusion die, an extrusion chamber connected to said extrusion die, piston means for feeding an extrusion material to be shaped in said die from said chamber to said die, said die defined by a passageway and an opening from which the extrusion shaped in said die may pass from said die, means for closing said die opening to prevent the flow of extrusion material from said die, means for imparting oscillatory movement to said piston means while retaining a predetermined quantity of extrusion material disposed between said piston means and said die to cause said piston means to apply a series of impact forces to said predetermined quantity of extrusion material and while said means for closing said die opening is operatively closing said die opening so as to intermittently work said predetermined quantity of extrusion material while it is held within said chamber and said die, and means for operating said die closing means to an open condition so as to permit movement of said predetermined quantity of extrusion material from said die after said intermittently applied forces have predeterminately worked said extrusion material within said extrusion chamber and said die.
Claim 3
Dependent Claim
106 words
An extrusion apparatus in accordance with claim 1 wherein said means for closing said extrusion die opening comprises tooling supported by said die, which tooling includes a means operable to extend across the opening in said die for preventing the passage of extrudate from the die and power operated means for extending said closing means across said die opening, said power operated means being also operable to retract said die closing means so as to effect the opening of said die to permit movement of said extrudate from said die after it has been worked by said series of impact forces applied thereto by said piston.
Claim 4
Dependent Claim
49 words
An extrusion apparatus in accordance with claim 1 wherein said means operable to extend across said die opening comprises a blade supported against the face of said die and a lineal actuator connected to said blade for advancing said blade across the die face for blocking the opening therein.
Claim 5
Dependent Claim
60 words
An extrusion apparatus in accordance with claim 1 wherein said means for applying a series of impact forces to said extrusion material includes a magnetic field generating coil radially disposed with respect to said die and means for intermittently electrically energizing said coil to intermittently generate a magnetic field which is operable to impact intermittent forces to said extrusion material.
Claim 6
Dependent Claim
129 words
Apparatus for forming an extrudable material to shape comprising in combination with a material forming means including a die having an opening terminating a passageway therethrough in which die extrudable material may be formed to shape, prime moving means operable for feeding extrusion material to said die and to force said extrusion material through said die for forming said extrusion material to shape, electromagnetic field generating means radially disposed around and along said passageway through said die and means for electrically energizing said electromagnetic field generating means to generate a magnetic field which magnetic field is operable to apply a force to the extrusion material in said die which force is of sufficient intensity to predeterminately work said extrusion material as said extrusion material is fed through said die.
Claim 7
Dependent Claim
129 words
Apparatus for forming an extrudable material to shape comprising in combination with a material forming means including a die having an opening terminating a passageway therethrough in which die extrudable material may be formed to shape, prime moving means operable for feeding extrusion material to said die and to force said extrusion material through said die for forming said extrusion material to shape, electromagnetic field generating means radially disposed around and along said passageway through said die and means for electrically energizing said electromagnetic field generating means to generate a magnetic field which magnetic field is operable to apply a force to the extrusion material in said die which force is of sufficient intensity to predeterminately work said extrusion material as said extrusion material is fed through said die.
Claim 8
Dependent Claim
36 words
An apparatus in accordance with claim 5 including means for inTermittently energizing said magnetic field generating means so as to vary the magnetic field generated thereby and to apply an intermittent force to said extrusion material.
Claim 9
Dependent Claim
29 words
An apparatus in accordance with claim 5 wherein said electromagnetic field generating means includes a current conducting coil which is integrally assembled to and forms part of said die.
Claim 10
Dependent Claim
27 words
An apparatus in accordance with claim 5 wherein said magnetic field generating coil means is operable, when energized to generate a shock wave in the extrusion material.
Claim 11
Independent Claim
117 words
An apparatus for forming an extrudable material to shape comprising in combination with a shaping means for an extrudable material having a passageway defining a wall portion for determining the shape of material disposed in a first condition therein, power operated means for forcing a solid extrudable material through said passageway to form same in the shape of said shaping means, magnetic field generating means disposed radially with respect to said passageway, means for electrically energizing said magnetic field generating means to generate a magnetic field of sufficient intensity to react on the solid extrudable material disposed within said shaping means to react on said extrudable material within said shaping means and to change its physical structure.
Claim 12
Independent Claim
117 words
An apparatus for forming an extrudable material to shape comprising in combination with a shaping means for an extrudable material having a passageway defining a wall portion for determining the shape of material disposed in a first condition therein, power operated means for forcing a solid extrudable material through said passageway to form same in the shape of said shaping means, magnetic field generating means disposed radially with respect to said passageway, means for electrically energizing said magnetic field generating means to generate a magnetic field of sufficient intensity to react on the solid extrudable material disposed within said shaping means to react on said extrudable material within said shaping means and to change its physical structure.
Claim 13
Dependent Claim
57 words
An apparatus in accordance with claim 9 wherein said shaping means is a die and means for intermittently energizing said magnetic field generating means in a manner to intermittently impart forces on said solid extrudable material disposed within said shaping means so as to intermittently work said solid extrudable material and to advance it through said die.
References Cited (Backward Citations)
US1924294A
Cited
US2783499A
Cited
US2967613A
Cited
US3002614A
Cited
US3113676A
Cited
US3153820A
Cited
US3233012A
Cited
US3232087A
Cited
US3400180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |