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US 9,849,581 B2Granted
Accessible temporary magnet control for magnetic drill press
AssigneeMilwaukee Electric Tool Corporation
InventorTerry L. Timmons
Life of this patent
Estimating the term…
Abstract
A drill press includes a main housing, a base coupled to the main housing and having an electromagnet, a drill unit supported by the main housing for relative movement therewith, a first switch selectively electrically connecting the electromagnet to a power source to energize the electromagnet, and a second switch for selectively interrupting power to the electromagnet.
Claims11
A drill press comprising:
- a main housing;
- a handle coupled to the main housing;
- a base coupled to the main housing and including an electromagnet;
- a drill unit supported by the main housing for relative movement therewith;
- a toggle switch actuatable between a closed state, in which power is delivered to the electromagnet from a power source to energize the electromagnet, and an open state, in which power to the electromagnet is interrupted;
- and
- a normally closed momentary switch wired in series with the toggle switch for selectively interrupting power to the electromagnet when the toggle switch is in the closed state, wherein the momentary switch is proximate the handle, and wherein the momentary switch is actuatable by a user of the drill press with a single hand, while gripping the handle, to interrupt power to the electromagnet when the toggle switch is in the closed state.
4 more elements
A method of attaching an electromagnet in a base of a drill press to a workpiece, the method comprising:
- positioning the base on the workpiece;
- energizing the electromagnet by actuating a first switch to electrically connect the electromagnet to a power source;
- interrupting power to the electromagnet by actuating a second switch;
- re-positioning the base on the workpiece;
- and
- re-energizing the electromagnet by releasing the second switch.
3 more elements
Dependencies are inferred from the claim text.