US Patent No. 9,883,612

HEAT SINK ATTACHMENT ON EXISTING HEAT SINKS


Patent No. 9,883,612
Issue Date January 30, 2018
Title Heat Sink Attachment On Existing Heat Sinks
Inventorship Louis-Marie Achard, Granby (CA)
Kenneth C. Marston, Poughquag, NY (US)
Janak G. Patel, South Burlington, VT (US)
David L. Questad, Hopewell Junction, NY (US)
Assignee International Business Machines Corporation, Armonk, NY (US)

Claim of US Patent No. 9,883,612

1. A device comprising:
a first heat sink comprising a first base and fins extending from said first base, said first base comprising at least one
cutout therein and a first base bottom surface contacting a first electronic component;

a second heat sink, separate from said first heat sink, said second heat sink comprising a second base and fins extending
from said second base, said second heat sink being located in said at least one cutout of said first heat sink but not contacting
said first heat sink, and said second base comprising a second base bottom surface contacting a second electronic component;

a pressure plate, separate from said first heat sink and said second heat sink, said pressure plate overlaying and contacting
said second heat sink, said pressure plate comprising openings extending from a top surface of said pressure plate to a bottom
surface of said pressure plate; and

first fasteners penetrating said openings in said pressure plate and attached only to said first heat sink, said first fasteners
comprising a shaft and compression elements surrounding a portion of said shaft, said pressure plate being positioned to apply
pressure between said second heat sink and said second electronic component, said compression elements enabling relative movement
between said pressure plate and said first heat sink.