Electric tool
First Claim
1. An electric tool comprising:
- a reversible motor;
an output shaft rotated by said motor;
a rotational-direction switch for switching a rotational direction of said output shaft in either forward or reverse direction;
a first memory for storing a plurality of operation modes of said output shaft with respect to one of said forward and reverse directions;
an operation-mode switch for selecting one from said operation modes;
a second memory for temporarily storing an operation mode selected by said operation-mode switch in a previous operation of the electric tool at the one of said forward and reverse directions in conjunction with the information of the rotational direction in the previous operation; and
a controller for automatically setting the electric tool in the operation mode temporarily stored in said second memory in a current operation of the electric tool, in which the same rotational direction as the previous operation is selected.
2 Assignments
0 Petitions
Accused Products
Abstract
An electric tool having the capability of achieving a high working efficiency is provided. This tool comprises an output shaft rotated by reversible motor, a rotational-direction switch for switching a rotational direction of the output shaft in either forward or reverse direction, first memory for storing a plurality of operation modes of the output shaft with respect to one of the forward and reverse directions, operation-mode switch for selecting one from the operation modes, second memory for temporarily storing an operation mode selected by the operation-mode switch in a use of the electric tool at the one of the forward and reverse directions; and a controller for automatically setting the electric tool in the operation mode stored in the second memory in the next use of the electric tool at the one of the forward and reverse directions.
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Citations
9 Claims
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1. An electric tool comprising:
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a reversible motor; an output shaft rotated by said motor; a rotational-direction switch for switching a rotational direction of said output shaft in either forward or reverse direction; a first memory for storing a plurality of operation modes of said output shaft with respect to one of said forward and reverse directions; an operation-mode switch for selecting one from said operation modes; a second memory for temporarily storing an operation mode selected by said operation-mode switch in a previous operation of the electric tool at the one of said forward and reverse directions in conjunction with the information of the rotational direction in the previous operation; and a controller for automatically setting the electric tool in the operation mode temporarily stored in said second memory in a current operation of the electric tool, in which the same rotational direction as the previous operation is selected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electric tool with at least two operation modes for providing different outputs to an object comprising:
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a main switch for selecting one from said at least two operation modes; a first memory for storing a plurality of sub-operation modes with respect to one of said at least two operation modes; a sub switch for selecting one from said sub-operation modes; a second memory for temporarily storing a sub-operation mode selected by said sub switch in a previous operation of the electric tool at the one of said at least two operation modes in conjunction with information of the operation mode in the previous operation; and a controller for automatically setting the electric tool in the sub-operation mode temporarily stored in said second memory in a current operation of the electric tool, in which the same operation mode as the previous operation is selected.
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Specification