Apparatus and method for creating crack initiation sites in a self-fracturing frangible member

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United States of America Patent

PATENT NO 11459266
APP PUB NO 20200308041A1
SERIAL NO

16903067

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Abstract

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An apparatus comprises a stressed glass member and an actuator mounted on the stressed glass member. A power source is coupled to the actuator. An abrasion structure is disposed between the actuator and the stressed glass member. The abrasion structure comprises abrading features in contact with the stressed glass member. The abrading features have a hardness higher than a hardness of the stressed glass member. When energized by the power source, the actuator is configured to induce movement of the abrasion structure that causes the abrading features to create scratches in the stressed glass member to a depth sufficient to initiate fracture of the stressed glass member.

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Patent Owner(s)

Patent OwnerAddress
SRI INTERNATIONAL333 RAVENSWOOD AVENUE MENLO PARK CA 94025

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnson, David Mathew San Francisco, US 75 557
Limb, Scott J Palo Alto, US 23 169
Murphy, Kathryn San Francisco, US 3 11

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