Strain matched threads for a high pressure high temperature...

Details Strain matched threads for a high pressure high temperature... Strain matched threads for a high pressure high temperature...

2008-04-08

2008-04-08

Davis, Robert B. (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Ultra high pressure generating device

C425S193000, C425S330000, C425SDIG026

Reexamination Certificate

active

11668361

ABSTRACT:
The present invention includes a hydraulic cartridge and unitary frame connection for a high pressure high temperature press apparatus with the hydraulic cartridge having a cylindrical base and truncated hollow conical section The truncated section has an external threadform with a taper between about 2.650 and 5.650 inches per foot. The unitary frame having an opening with an internal threadform extending axially substantially between an outer surface and an inner reaction chamber defined by the unitary frame and the internal threadform being threadedly mated with the external threadform of the hydraulic cartridge such that a load is substantially equally distributed across the external threadform.

REFERENCES:
patent: 2968837 (1961-01-01), Zeitlin et al.
patent: 3257688 (1966-06-01), Levey, Jr.
patent: 4842464 (1989-06-01), Green
patent: 6186763 (2001-02-01), Scanlan
patent: 6336802 (2002-01-01), Hall
patent: 7186104 (2007-03-01), Hall et al.
patent: 2007/0209186 (2007-09-01), Hall et al.

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