| US 7,497,675 B2 | ||
| Piston for a HPHT apparatus | ||
| David R. Hall, 2185 S. Larsen Parkway, Provo, Utah 84606 (US); Scott Dahlgren, 2185 S. Larsen Parkway, Provo, Utah 84606 (US); and Timothy C. Duke, 2185 S. Larsen Parkway, Provo, Utah 84606 (US) | ||
| Filed on Feb. 13, 2007, as Appl. No. 11/674,224. | ||
| Application 11/674224 is a continuation of application No. 11/674045, filed on Feb. 12, 2007. | ||
| Prior Publication US 2008/0193580 A1, Aug. 14, 2008 | ||
| Int. Cl. B29C 43/02 (2006.01); B30B 7/00 (2006.01) | ||
| U.S. Cl. 425—77 [425/330] | 20 Claims |
| 1. A cartridge assembly adapted for connection to a frame of a high pressure, high temperature press, comprising:
a front end comprising a back up intermediate and coaxial with an anvil and a piston;
the cartridge assembly comprising a hydraulic system adapted to apply axial pressure to the back-up through the piston;
a central portion of the piston comprising a axial thickness approximately equal to the axial length of the back-up.
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