Operational data storage device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11015321
APP PUB NO 20190186104A1
SERIAL NO

16328903

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An operational data storage device mounted on an hydraulic excavator is programmed to store operational data including stroke data and movement quantity data. The stroke data represent input operations by the operator of the hydraulic excavator through electric operating levers, and the movement quantity data represent movement quantities of operating members for a front working device equipped with the hydraulic excavator, the operating member being operated according to the input operations. The operational data storage device stores, in an initial state, the operational data in the volatile storage section, generates a save and exit signal if a posture parameter detected at a posture detection sensor included in the hydraulic excavator exceeds a predetermined posture threshold, and responsive to the save and exit signal, switches a write destination of the operational data from the volatile storage section to the non-volatile storage section.

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Patent Owner(s)

  • HITACHI CONSTRUCTION MACHINERY CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doi, Shintaro Tsuchiura, JP 1 0
Kanezawa, Hiroshi Kashiwa, JP 6 20
Maeno, Akiko Abiko, JP 5 115
Migita, Hirofumi Adachi, JP 1 0
Sakurai, Masatoshi Abiko, JP 186 1726
Shiina, Takeshi Moriya, JP 7 2
Takahashi, Toshiakira Abiko, JP 1 0
Yanase, Yoshitaka Tsuchiura, JP 1 0

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