Method and apparatus for leak-proof mounting of a liquid cooling device on an integrated circuit

1. Apparatus for cooling of an electrical circuit element on an electrical element package, comprising in combination with said electrical element package and electrical circuit element:

a) structure including a hollow body defining a cavity for containing cooling fluid located in direct heat transfer relation and contact with said electrical circuit element,

b) a rotatably tightenable connection between said electrical element package and said hollow body, and acting to block leakage of cooling fluid from said cavity,

c) said connection including interengaged first and second sealing screw threads respectively on said electrical element package and on said hollow body, and exposed to fluid in said cavity,

d) said connection including an annular part projecting from said electrical element package and extending about said electrical circuit element, said first screw thread located on said part, and said second screw thread located on a portion of said hollow body that projects re-entrantly into said hollow body,

e) said hollow body defining an opening via which said electrical circuit element is directly exposed to fluid in said cavity, said screw threads extending about said opening, said opening extending re-entrantly into the interior of said hollow body.

2. The combination of claim 1 wherein said part defines an annular retainer integrally carried by said hollow body, and which extends re-entrantly into said cavity, said second screw thread located on said retainer.

3. The combination of claim 2 wherein the screw threads extend about said axis of an opening via which said element is exposed to fluid in the cavity, said first screw thread facing in one of the following directions:

i) toward said axis

ii) away from said axis.

4. The combination of claim 1 wherein said element is an integrated circuit.

5. The combination of claim 2 including interengaged sealing shoulders on said part and said retainer.

6. The combination of claim 4 wherein said part and retainer have a central axis, which intersects said integrated circuit.

7. The combination of claim 1 wherein the screw threads extend about a cavity receiving said element and into which cooling fluid extends from a larger body of cooling fluid, said larger body of cooling fluid extending annularly about said screw threads.