High pressure, high temperature back-up with a circumferential relief
View Patent ↗In one aspect of the present invention, a cartridge assembly for connection to the frame of a high-pressure, high-temperature press comprises a front end comprising a back-up intermediate and coaxial with an anvil and a piston, the anvil comprising a proximal end in contact with the back-up and a distal end that forms part of a pressurized chamber within the frame, the back-up comprising a proximal end comprising a first diameter proximate an interface with a distal end of the piston, and a distal end comprising a second diameter proximate an interface with the proximal end of the anvil, the back-up comprising one or more circumferential reliefs disposed on the first diameter.
1. A cartridge assembly 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 anvil comprising a proximal end in contact with the back-up and a distal end that forms part of a pressurized chamber within the frame;
the back-up comprising a proximal end comprising a first diameter proximate an interface with a distal end of the piston, and a distal end comprising a second diameter proximate an interface with the proximal end of the anvil;
the back-up comprising a first and a second circumferential reliefs disposed on the first diameter; and
the first and second reliefs comprise different internal diameters.
2. The cartridge assembly of claim 1 , wherein the cartridge body comprises tapered threads.
3. The cartridge assembly of claim 1 , wherein the cartridge body comprises indexing detents corresponding to indexing protrusions on the frame.
4. The cartridge assembly of claim 1 , wherein the cartridge body comprises a compressive element disposed on an outer diameter of the cartridge body.
5. The cartridge assembly of claim 1 , wherein the cartridge assembly comprises an electrically insulating disc disposed intermediate the distal end of the piston and the proximal end of the back-up.
6. The cartridge assembly of claim 5 , wherein the electrically insulating disc comprises, fiberglass, carbon fiber, or other composite material.
7. The cartridge assembly of claim 1 , wherein the back-up comprises a substantially conical portion intermediate the first and second diameters.
8. The cartridge assembly of claim 7 , wherein the substantially conical portion is substantially concave.
9. The cartridge of claim 1 , wherein the first diameter is larger than the second diameter.
10. The cartridge of claim 1 , wherein the first diameter is at least twice as large as the second diameter.
11. The cartridge assembly of claim 1 , wherein the circumferential reliefs comprise a half-round cross-section.
12. The cartridge assembly of claim 1 , wherein the circumferential grooves comprise a variable radius cross-section.
13. The cartridge assembly of claim 1 , wherein the circumferential grooves comprise a cross-section comprising a chord of a circle.
14. The cartridge assembly of claim 1 , wherein the circumferential grooves comprise generally partial elliptical geometry.
15. The cartridge assembly of claim 11 , wherein the back-up comprises a transitional area proximate the second diameter wherein an outer surface of the back-up extends normal to the plane of the second diameter towards the conical portion.
16. The cartridge assembly of claim 1 , wherein the circumferential grooves comprise generally polygonal geometry.
17. The cartridge of claim 1 , wherein the interface intermediate the back-up and the anvil comprises non-planer geometry.
18. The cartridge of claim 1 , wherein the interface intermediate the back-up and the piston comprises non-planer geometry.
19. The cartridge of claim 1 , wherein the circumferential reliefs comprise support ribs.