Electric power tool with code receiver
First Claim
1. A device for disabling and enabling operation of a portable electric power tool, said electric power tool including a replaceable battery unit and a rechargeable battery unit, said device comprising:
- a code signal receiver for receiving a code signal from a code signal emitting device via a contact free transmission; and
an electronic controller arranged to switch the power tool to an operable mode only when both a charged battery unit is fitted to the power tool and the code signal is received by said code signal receiver, and to maintain the power tool in the operable mode so long as the battery unit remains fitted to the power tool without requiring the code signal to be received again by said code signal receiver; and
the electronic controller being arranged to switch the power tool to an inoperable mode when the battery unit is removed from the power tool and to maintain the power tool in the inoperable mode until both a new charged battery unit is fitted to the power tool and the code signal is again received by said code signal receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric power tool includes a power supply which is one of a replaceable battery unit, a rechargeable battery unit, and a cable connection for detachably connecting to a mains power supply. A code receiver is provided for receiving a code signal from a code signal emitting device via a contact free transmission. An electronic controller is arranged to switch the power tool to an operable mode when the power supply is coupled to the power tool and the code signal is received by the code signal receiver. The electronic controller is also arranged to switch the power tool to an inoperable mode when the power supply is uncoupled from the power tool and to maintain the power tool in the inoperable mode until the power supply is re-coupled to the power tool and the code signal is again received by the code signal receiver.
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Citations
12 Claims
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1. A device for disabling and enabling operation of a portable electric power tool, said electric power tool including a replaceable battery unit and a rechargeable battery unit, said device comprising:
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a code signal receiver for receiving a code signal from a code signal emitting device via a contact free transmission; and an electronic controller arranged to switch the power tool to an operable mode only when both a charged battery unit is fitted to the power tool and the code signal is received by said code signal receiver, and to maintain the power tool in the operable mode so long as the battery unit remains fitted to the power tool without requiring the code signal to be received again by said code signal receiver; and
the electronic controller being arranged to switch the power tool to an inoperable mode when the battery unit is removed from the power tool and to maintain the power tool in the inoperable mode until both a new charged battery unit is fitted to the power tool and the code signal is again received by said code signal receiver. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A portable electric power tool comprising:
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a replaceable battery unit for supplying power; a code receiver for receiving a code signal from a code signal emitting device via a contact free transmission; and an electronic controller arranged to switch the power tool to an operable mode only when both a charged battery unit is fitted to the power tool and the code signal is received by said code signal receiver, and to maintain the power tool in the operable mode so long as the battery unit remains fitted to the power tool without requiring the code signal to be received again by said code signal receiver; and
the electronic controller being arranged to switch the power tool to an inoperable mode when the battery unit is removed from the power tool and to maintain the power tool in the inoperable mode until both a new charged battery unit is fitted to the power tool and the code signal is again received by said code signal receiver. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification