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US 6,049,145 AGranted
Tamper proof safety circuit
AssigneeMotorola, Inc.
InventorsMicheal M. Austin, Kevin D. Page
Life of this patent
Estimating the term…
Abstract
An electronic device (100) includes electrical circuitry (130), a housing (105) in which the electronic circuitry (130) is situated, a cover (110) for enclosing the electrical circuitry (130) within the housing (105), and a tamper proof safety circuit (120) coupled to the electrical circuitry (130) for rendering the electronic device (100) inoperable when the housing (105) and cover (110) are disassembled.
Claims4
A battery pack comprising:
- electrical circuitry;
- a housing in which the electrical circuitry is situated;
- a cover for enclosing the electrical circuitry within the housing;
- means for attaching the electrical circuitry to the cover;
- a flexible substrate on which the electrical circuitry is mounted;
- a battery cell coupled to electrical circuitry by a flexible substrate;
- wherein a cutout in the flexible substrate partially surrounds a portion of the electrical circuitry;
- whereby disassembly of the cover from the housing can cause tearing of the cutout, which opens the electrical circuitry, rendering the battery pack inoperable.
5 more elements
An electronic device comprising a battery pack having:
- electrical circuitry;
- a housing in which the electrical circuitry is situated;
- a cover for enclosing the electrical circuitry within the housing;
- means for attaching the electrical circuitry to the cover;
- a flexible substrate on which the electrical circuitry is mounted;
- a cell upon which is attached the flexible substrate;
- wherein a cutout in the flexible substrate partially surrounds a portion of the electrical circuitry;
- whereby disassembly of the cover from the housing can cause tearing of the cutout, which opens the electrical circuitry, rendering the battery pack inoperable.
5 more elements
Dependencies are inferred from the claim text.