Sawtooth card retainer
First Claim
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1. A printed circuit board heat sink retainer, comprising:
- a first sawtoothed piece bonded to an internal chassis wall between a pair of ribs integral to said wall and butted up against one of the ribs wherein the distance between successive teeth is a first selected constant;
a second sawtoothed piece loosely held between the ribs for mating its sawteeth with the teeth of the first piece and wherein the distance between successive teeth is a second selected constant lesser than the first selected constant; and
spread apart and hold means, for providing spreading forces which spread said first and second pieces apart such that the second piece pushes against a heat sink inserted between it and a rib and which forces hold the second piece in place against the heat sink.
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Abstract
A printed circuit board heat sink retainer is disclosed comprising a mating pair of sawtoothed bars with slidably engaging teeth. The bars are laterally spread apart and held by a forcing device, which may be a screw or a spring, in order to push against and hold a heat sink in a channel. The distance between successive teeth may be constant in both bars or may be constant in one bar and may decrease in a direction toward the forcing device in the second bar.
39 Citations
1 Claim
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1. A printed circuit board heat sink retainer, comprising:
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a first sawtoothed piece bonded to an internal chassis wall between a pair of ribs integral to said wall and butted up against one of the ribs wherein the distance between successive teeth is a first selected constant; a second sawtoothed piece loosely held between the ribs for mating its sawteeth with the teeth of the first piece and wherein the distance between successive teeth is a second selected constant lesser than the first selected constant; and spread apart and hold means, for providing spreading forces which spread said first and second pieces apart such that the second piece pushes against a heat sink inserted between it and a rib and which forces hold the second piece in place against the heat sink.
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Specification
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Current AssigneeUnited Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
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Original AssigneeUnited Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
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InventorsMcNulty, Christopher T.
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Primary Examiner(s)TOLIN, GERALD P
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Application NumberUS07/126,975Time in Patent Office335 DaysField of Search165/80.2, 165/80.3, 165/185, 357/81, 211/41, 174/16 HS, 361/382-388, 361/415, 24/304, 24/524-526, 439/64, 439/68, 439/73, 439/62, 439/267, 439/197, 439/485, 403/374, 403/409.1, 254/104US Class Current165/80.2CPC Class CodesH05K 7/1404 by edge clamping, e.g. wedgesY10T 403/7069 Axially oriented
