Cordless router
First Claim
1. A cordless router motor unit comprising:
- a housing;
a battery releasably attached to the housing;
a locking mechanism provided on the housing for releasably retaining the battery in a locked position relative to the housing;
a DC motor positioned inside the housing and having a rotational axis, the DC motor powered by the battery;
an output shaft powered by and extending from the DC motor having on the end thereof a tool clamping device for holding a cutting tool;
wherein the battery slides into the locked position relative to the housing in a direction substantially normal to the rotational axis; and
wherein when the battery is in the locked position relative to the housing, the center of gravity of the cordless router motor unit is substantially colinear with the rotational axis of the output shaft.
2 Assignments
0 Petitions
Accused Products
Abstract
A cordless router motor unit has a metal barrel and a plastic battery housing. A DC motor is housed inside of the barrel and drives an output shaft and up to a ½″ collet chuck. The battery housing holds a power switch and is fastened to the barrel. A battery is releasably attached to the battery housing through a sliding engagement in a direction normal to the longitudinal axis of the motor unit. When the battery is in its locked position relative to the battery housing, the center of gravity of the battery is balanced over the output shaft. The power switch is positioned radially from the DC motor and below the battery so that the router motor unit has a low center of gravity. The battery provides at least 18V and the maximum power output of the DC motor is at least ⅝ hp. The barrel can be sized to engage with a router base which also engages with a corded router motor unit.
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Citations
23 Claims
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1. A cordless router motor unit comprising:
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a housing;
a battery releasably attached to the housing;
a locking mechanism provided on the housing for releasably retaining the battery in a locked position relative to the housing;
a DC motor positioned inside the housing and having a rotational axis, the DC motor powered by the battery;
an output shaft powered by and extending from the DC motor having on the end thereof a tool clamping device for holding a cutting tool;
wherein the battery slides into the locked position relative to the housing in a direction substantially normal to the rotational axis; and
wherein when the battery is in the locked position relative to the housing, the center of gravity of the cordless router motor unit is substantially colinear with the rotational axis of the output shaft. - View Dependent Claims (2, 3, 4, 5)
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6. A cordless router motor unit comprising:
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a housing;
a battery releasably attached to the housing providing a minimum voltage of at least 18V in a no-load, fully charged state;
a DC motor positioned inside the housing and powered by the battery, the DC motor having a maximum power output of at least ⅝
hp. when powered by the battery;
a power switch electrically connected to the battery and electrically connected to the DC motor for turning the motor on and off;
an output shaft powered by and extending from the DC motor having on the end thereof a tool clamping device for holding a cutting tool. - View Dependent Claims (7)
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8. A cordless router motor unit comprising:
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a housing comprising;
a metal barrel; and
a plastic battery housing joined to the metal barrel with fasteners;
a DC motor disposed at least partially inside of the metal barrel;
an output shaft powered by and extending from the DC motor having on the end thereof a tool clamping device for holding a cutting tool; and
a battery detachably mounted to the battery housing for powering the DC motor. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A cordless router motor unit comprising:
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a housing;
a DC motor positioned inside the housing;
a battery releasably attached to the housing so that the rotational axis of the DC motor is on a line passing through the battery, the battery powering the DC motor;
an output shaft powered by and extending from the DC motor having on the end thereof a tool clamping device for holding a cutting tool; and
a power switch disposed at least partially inside of the housing and having a button extending out of the housing, the power switch being radially spaced from the DC motor and positioned below the battery, the power switch controlling the passage of electrical current from the battery to the DC motor.
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15. A cordless router motor unit comprising:
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a housing;
a battery releasably attached to the housing;
a DC motor powered by the battery and positioned inside the housing; and
an output shaft powered by and extending from the DC motor, the output shaft having on one end thereof a collet chuck adapted to hold router bits having a shaft diameter of at least approximately ⅜
″
. - View Dependent Claims (16, 17, 18)
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19. A router tool set comprising:
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a cordless router motor unit comprising;
a housing having a barrel with an external profile;
a battery releasably attached to the housing;
a DC motor supported inside the housing and powered by the battery;
an output shaft powered by and extending from the DC motor having on the end thereof a tool clamping device for holding a cutting tool;
a corded router motor unit comprising;
a housing having a barrel with an external profile;
an AC motor supported inside the housing;
a power cord electrically connected to the AC motor and extending from the housing for bringing electrical power from an external electrical source to power the AC motor;
an output shaft powered by and extending from the AC motor having on the end thereof a tool clamping device for holding a cutting tool;
a base having an internal surface substantially corresponding to both the external profile of the barrel of the cordless router motor unit and the external profile of the barrel of the corded router motor unit, the base capable of engaging the barrel of the cordless router motor unit and moving axially thereon and also capable of engaging the barrel of the corded router motor unit and moving axially thereon. - View Dependent Claims (20, 21, 22, 23)
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Specification