US3895894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for generating high pressures and temperatures
Assignee: Fried Krupp AG
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Filing: 1973-04-23
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Granted: 1975-07-22
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Expires: 1993-04-23
Abstract
Abstract A device for generating high pressures and temperatures, in which in the pressure chamber of a high strength metallic pressure container, a charge of material laterally surrounded by electrically insulating material by means of two piston rams movable in opposite direction with regard to each other and sealed relative to the pressure container is subjected to pressure while being electrically heated. The pressure container comprises at least two axially aligned metallic ring members of high strength hard metal which define a pressure chamber, while between the rings and between the rings and a matrix surrounding the rings, pressure resistant electrically insulating material is provided. Outside the pressure chamber, sealing means of plastically deformable strong metallic material are provided between the piston rams and the rings.
Inventors
- 👤 Klaus Biermann
- 👤 Jurgen Burbach
- 👤 Horst Gimpel
- 👤 Burckhard Zirpins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:32
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/065
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
215 words
A device for generating high pressures and temperatures, which includes in combination: a high-strength metallic pressure container comprising a pressure chamber adapted to receive a tubular member of plastically deformable and electrically insulating material with a charge of material to be compressed therein, two oppositely located conical piston ram means arranged in axial alignment with each other and with said pressure chamber and movable toward and away from each other and said pressure chamber for respectively compressing a charge of material in a tubular member received in said pressure chamber and relieving the thus compressed charge, electric current conveying means electrically connected to said piston ram means for heating a charge to be compressed received in said pressure chamber, said pressure chamber being defined by at least two axially aligned annular members of high strength hard metal, pressure resistant iNsulating material interposed between and electrically insulating said annular members from each other, annular fitting means surrounding said annular members, additional pressure resistant mica insulating means permanently interposed durably between the outer periphery of said annular members and the inner peripheral surface of said fitting means and electrically insulating the same from each other, and strong metallic sealing means arranged between said piston ram means and at least the respective adjacent one of said annular members.
Claim 2
Independent Claim
215 words
A device for generating high pressures and temperatures, which includes in combination: a high-strength metallic pressure container comprising a pressure chamber adapted to receive a tubular member of plastically deformable and electrically insulating material with a charge of material to be compressed therein, two oppositely located conical piston ram means arranged in axial alignment with each other and with said pressure chamber and movable toward and away from each other and said pressure chamber for respectively compressing a charge of material in a tubular member received in said pressure chamber and relieving the thus compressed charge, electric current conveying means electrically connected to said piston ram means for heating a charge to be compressed received in said pressure chamber, said pressure chamber being defined by at least two axially aligned annular members of high strength hard metal, pressure resistant iNsulating material interposed between and electrically insulating said annular members from each other, annular fitting means surrounding said annular members, additional pressure resistant mica insulating means permanently interposed durably between the outer periphery of said annular members and the inner peripheral surface of said fitting means and electrically insulating the same from each other, and strong metallic sealing means arranged between said piston ram means and at least the respective adjacent one of said annular members.
Claim 3
Independent Claim
310 words
A device for generating high pressures and temperatures, which includes: a high-strength metallic pressure container comprising a pressure chamber adapted to receive a tubular member of plastically deformable and electrically insulating material with a charge of material to be compressed therein, two oppositely located conical piston ram means arranged in axial alignment with each other and with said pressure chamber and movable toward and away from each other and said pressure chamber for respectively compressing a charge of material in a tubular member received in said pressure chamber and relieving the thus compressed charge, electric current conveying means electrically connected to said piston ram means for heating a charge to be compressed received in said pressure chamber, said pressure chamber being defined by at least two axially aligned annular members of high strength hard metal, pressure resistant insulating material interposed between and electrically insulating said annular members from each other, annular fitting means surrounding said annular members, additional pressure resistant insulating means interposed between the outer periphery of said annular members and the inner peripheral surface of said fitting means and electrically insulating the same from each other, strong metallic sealing means arranged between said piston ram means and at least the respective adjacent one of said annular members, each of said piston ram means comprising an outer piston and an inner piston smaller than said outer piston and inserted into the respective adjacent metallic sealing means for acting upon a charge in said pressure chamber, each of said outer pistons being operable to act upon the pertaining inner piston, holding means respectively connected to said outer pistons for holding the same, matrix means with a substantially cylindrical inner wall surrounding said pressure chamber, and elastically deformable electrically insulating ring means arranged between said holding means and said matrix means for centering said holding means relative to said matrix means.
Claim 4
Independent Claim
310 words
A device for generating high pressures and temperatures, which includes: a high-strength metallic pressure container comprising a pressure chamber adapted to receive a tubular member of plastically deformable and electrically insulating material with a charge of material to be compressed therein, two oppositely located conical piston ram means arranged in axial alignment with each other and with said pressure chamber and movable toward and away from each other and said pressure chamber for respectively compressing a charge of material in a tubular member received in said pressure chamber and relieving the thus compressed charge, electric current conveying means electrically connected to said piston ram means for heating a charge to be compressed received in said pressure chamber, said pressure chamber being defined by at least two axially aligned annular members of high strength hard metal, pressure resistant insulating material interposed between and electrically insulating said annular members from each other, annular fitting means surrounding said annular members, additional pressure resistant insulating means interposed between the outer periphery of said annular members and the inner peripheral surface of said fitting means and electrically insulating the same from each other, strong metallic sealing means arranged between said piston ram means and at least the respective adjacent one of said annular members, each of said piston ram means comprising an outer piston and an inner piston smaller than said outer piston and inserted into the respective adjacent metallic sealing means for acting upon a charge in said pressure chamber, each of said outer pistons being operable to act upon the pertaining inner piston, holding means respectively connected to said outer pistons for holding the same, matrix means with a substantially cylindrical inner wall surrounding said pressure chamber, and elastically deformable electrically insulating ring means arranged between said holding means and said matrix means for centering said holding means relative to said matrix means.
Claim 5
Dependent Claim
23 words
A device according to claim 1, in which said first mentioned and said additional pressure resistant electrically insulating material includes layers of mica.
Claim 6
Dependent Claim
50 words
A device according to claim 2, in which said piston ram means and said metallic sealing means are so designed that during the deformation of said sealing means during the build up of pressure, the contacting surface of the piston ram means with said sealing means remains substantially the same.
Claim 7
Dependent Claim
61 words
A device in combination according to claim 1, in which each of said piston ram means comprises an outer piston and an inner piston smaller than said outer piston and inserted into the respective adjacent metallic sealing means for acting upon a charge in said pressure chamber, each of said outer pistons being operable to act upon the pertaining inner piston.
Claim 8
Dependent Claim
15 words
A device according to claim 2, in which said inner pistons are of hard metal.
Claim 9
Dependent Claim
47 words
A device according to claim 2, in which said metallic sealing means are cap shaped so as to exert an increasing lateral pressure upon the respective adjacent inner piston in response to increasing pressure exerted by said piston ram means upon a charge in said pressure chamber.
Claim 10
Dependent Claim
51 words
A device according to claim 2, which includes two intermediate rings of a plastically deformable material respectively interposed between said metallic sealing means adjacent each of Said piston ram means and the respective adjacent end of a tubular member with a charge of material to be compressed within said pressure chamber.
Claim 11
Dependent Claim
14 words
A device according to claim 8, in which said intermediate ring is of lead.
Claim 12
Dependent Claim
20 words
A device according to claim 2, which includes matrix means with a substantially cylindrical inner wall surrounding said pressure chamber.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |