Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1977-03-17
1978-09-12
Meros, Edward J.
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
423659, 425DIG26, 425 77, C01B 3106
Patent
active
041138465
ABSTRACT:
A method of increasing to a predetermined value the pressure exerted on materials treated in high pressure chambers. A first pressure-exerting force is used to act on the material throughout the entire treatment process and a second pressure-exerting force is used to act on a limited amount of a pressure compensating medium. The two pressure-exerting forces are interdependent whereby any tendency to change of the pressure exerted on the material inside the pressure chamber automatically brings about a proportional change of the pressure of the compensating medium, whereby the pressure in the high-pressure chamber is maintained at the desired level. The method is primarily but not exclusively intended for the production of synthetic diamonds. The invention also concerns an apparatus for performing the method, including first pistons exerting a pressure on the material inside the pressure chamber, a closed space holding said limited amount of the pressure compensating medium, and a second pressure-exerting means applying a pressure on said compensating medium, said two pressure-exerting means being interconnected to move concordantly to effect the pressure regulation.
REFERENCES:
patent: 3031269 (1962-04-01), Bouenkerk
patent: 3123862 (1964-03-01), Levey
patent: 3674403 (1972-07-01), Jonsson et al.
patent: 3676069 (1972-07-01), Kennedy
Meros Edward J.
Sigurdssons Mek. Verkstad
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