US Patent No. 9,343,867

GAS LASER SYSTEM RE-ACTIVATABLE WITHOUT ANY DAMAGE WITHIN SHORT TIME DURING RECOVERY OF POWER SUPPLY


Patent No. 9,343,867
Issue Date May 17, 2016
Title Gas Laser System Re-activatable Without Any Damage Within Short Time During Recovery Of Power Supply
Inventorship Ryusuke Miyata, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,343,867

1. A gas laser system comprising:
a power source unit;
a laser oscillator operated by power supplied from the power source unit and including a device, a predetermined standby time
being needed until the device normally starts an operation after the device stops the operation due to reduction of the power
supplied from the power source unit;

a controller configured to control the laser oscillator;
a power reduction detection unit configured to detect the reduction of the power supplied from the power source unit, in which
the power is lowered than a power value operable normally the laser oscillator; and

a nonvolatile storage unit configured to store time data of a first time point when the reduction of the supplied power is
detected by the power reduction detection unit,

wherein the controller calculates an operation stop time of the device, based on time from the first time point acquired from
the time data stored in the nonvolatile storage unit to a second point time when a next system activation command is output,
permits operation resumption of the device when the operation stop time exceeds the predetermined standby time, and inhibits
the operation resumption of the device when the operation stop time is within the predetermined standby time.