Heat dissipating chassis for handheld battery operated device
First Claim
1. A heat dissipating chassis for a handheld device, comprising:
- a tubular body having a longitudinal axis, a first open end and a second end;
a rim having a radiating surface surrounding said first open end of said body;
said body and said rim having a circular internal cross section and a tri-lobal external shape; and
a transverse bulkhead disposed across an interior portion of said second end of said body at a right angle with said longitudinal axis;
whereinsaid body, rim, and transverse bulkhead are formed as a unitary component of a single thermally conductive material.
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Accused Products
Abstract
A heat sink for a handheld device is found as a one piece chassis for supporting heat-producing circuits inside the device while having heat radiating surfaces outside the device. In another embodiment a battery pack control circuit under microprocessor control allows battery packs having different battery chemistries and characteristics to be interchanged in the same device without switches or adapters. Control of operating modes of the device despite changes in the battery pack including battery chemistry, state of charge, available voltage, or desired operating mode are automatic. The microprocessor measures the battery pack characteristics, using look up tables in a suitable program to adjust the circuit operating modes. The microprocessor also responds to sequential switch contact closures in setting operating modes.
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Citations
18 Claims
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1. A heat dissipating chassis for a handheld device, comprising:
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a tubular body having a longitudinal axis, a first open end and a second end; a rim having a radiating surface surrounding said first open end of said body; said body and said rim having a circular internal cross section and a tri-lobal external shape; and a transverse bulkhead disposed across an interior portion of said second end of said body at a right angle with said longitudinal axis;
whereinsaid body, rim, and transverse bulkhead are formed as a unitary component of a single thermally conductive material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification