US4081505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of compressing a material under high pressure
Assignee: Individual
•
Filing: 1976-09-13
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Granted: 1978-03-28
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Expires: 1996-09-13
Abstract
Abstract Ultra-high pressure generation by using a new pressure transmitting medium consisting essentially of powder of an inorganic material having high hardness and cleavage.
Inventors
- 👤 Naoto Kawai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/065; B01J3/067; B30; B30B; B30B11/00; B30B11/004; B30B11/007
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
209 words
A method of compressing a sample under ultra-high pressure comprising the steps of: a. embedding said sample to be compressed in a pressure transmitting medium consisting essentially of powder of an inorganic material having high hardness and cleavage, the pressure transmitting medium having voids therewithin; b. inserting the pressure transmitting medium and the embedded sample in a central pressure chamber of a pressure vessel, the pressure vessel comprising a plurality of spherical segments which are movable radially inwardly relative to each other toward the center of the pressure vessel; c. applying external pressure to the pressure vessel to force the spherical segments radially inwardly toward the center of the pressure vessel to: i. compact the pressure transmitting medium; ii. reduce the voids in the pressure transmitting medium; and iii. progressively reduce the area of contact between the sample and the pressure transmitting medium which is being forced inwardly by each spherical segment, whereby the ratio between the external area of the pressure vessel and the area of contact between the sample and the pressure transmitting medium progressively increases and the magnification between the external pressure and the pressure exerted on the sample by the pressure transmitting material is progressively increased so that ultra-high pressure is applied to the sample.
Claim 2
Independent Claim
209 words
A method of compressing a sample under ultra-high pressure comprising the steps of: a. embedding said sample to be compressed in a pressure transmitting medium consisting essentially of powder of an inorganic material having high hardness and cleavage, the pressure transmitting medium having voids therewithin; b. inserting the pressure transmitting medium and the embedded sample in a central pressure chamber of a pressure vessel, the pressure vessel comprising a plurality of spherical segments which are movable radially inwardly relative to each other toward the center of the pressure vessel; c. applying external pressure to the pressure vessel to force the spherical segments radially inwardly toward the center of the pressure vessel to: i. compact the pressure transmitting medium; ii. reduce the voids in the pressure transmitting medium; and iii. progressively reduce the area of contact between the sample and the pressure transmitting medium which is being forced inwardly by each spherical segment, whereby the ratio between the external area of the pressure vessel and the area of contact between the sample and the pressure transmitting medium progressively increases and the magnification between the external pressure and the pressure exerted on the sample by the pressure transmitting material is progressively increased so that ultra-high pressure is applied to the sample.
Claim 3
Dependent Claim
39 words
The method of claim 1 wherein said inorganic material is selected from the group consisting of MgO, diamond, boron, cubic BN, BeO, TiO 2 , ZrO 2 , WC, TiC, B 4 C and Al 2 O 3 .
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said powder of the inorganic material is semi-sintered into a suitable shape prior to the embedding step.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein said powder is semi-sintered into an octahedral shape prior to the embedding step.
Claim 6
Dependent Claim
11 words
The method of claim 3 wherein said inorganic material is MgO.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein said powder of the inorganic material is desirably shaped by consolidation with a small amount of resinous binder.
Claim 8
Dependent Claim
11 words
The method of claim 6 wherein said inorganic material is diamond.
Claim 9
Dependent Claim
28 words
The method of claim 1 including the step of inserting inner cubic anvils between the pressure transmitting medium and the spherical segments before the external pressure is applied.
Claim 10
Independent Claim
132 words
A method of compressing a sample under ultra-high pressure comprising the steps of embedding said sample to be compressed in a pressure transmitting medium consisting essentially of powder of an inorganic material having high hardness and cleavage, the pressure transmitting medium having voids therein, and subjecting said pressure transmitting medium to external high pressure surrounding the pressure transmitting medium and directed radially inwardly toward the sample to reduce voids in said medium so as to transform said medium to a plurality of growing anvils of medium solidified from outer to inner direction and with the top of each anvil progressively sharpened whereby said sample embedded in said medium is subjected to an ultra-high pressure generated by the transmission and magnification of said external high pressure through said growing anvils of said medium.
Claim 11
Independent Claim
132 words
A method of compressing a sample under ultra-high pressure comprising the steps of embedding said sample to be compressed in a pressure transmitting medium consisting essentially of powder of an inorganic material having high hardness and cleavage, the pressure transmitting medium having voids therein, and subjecting said pressure transmitting medium to external high pressure surrounding the pressure transmitting medium and directed radially inwardly toward the sample to reduce voids in said medium so as to transform said medium to a plurality of growing anvils of medium solidified from outer to inner direction and with the top of each anvil progressively sharpened whereby said sample embedded in said medium is subjected to an ultra-high pressure generated by the transmission and magnification of said external high pressure through said growing anvils of said medium.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |