Power Source Control Circuit for Working Machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20120205969A1
SERIAL NO

13359021

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A power source control circuit for a working machine includes an electric circuit connecting a key cylinder, controller and accessories. The electric circuit is provided with a first self-holding relay drivable directly by a relay drive signal outputted from the controller and second self-holding relays drivable in conjunction with the first relay. When a gate lock switch is switched to a lock position while an engine is running, the controller outputs an engine stop signal at a subsequent predetermined timing to stop the running of the engine, and also outputs the relay drive signal to drive the first relay and second relays such that a key-on power supply and an accessory power supply are each held in a cut-off state.

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Patent Owner(s)

Patent OwnerAddress
HITACHI CONSTRUCTION MACHINERY CO LTDBUNKYO-KU TOKYO 112-8563

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shimamura, Tadatoshi Tsuchiura-shi, JP 10 91
YABUUCHI, Motoyuki Tsuchiura-shi, JP 3 20

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