Magnetic drill press
AssigneeMilwaukee Electric Tool Corporation
InventorsTerry L. Timmons, James Wekwert
Life of this patent
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Abstract
A magnetic base for selectively magnetically latching to a ferromagnetic surface includes a magnet holder, a fixed magnet assembly supported within the magnet holder, a movable magnet assembly supported within the magnet holder, and a transmission. The transmission includes an input, an output coupled to the movable magnet assembly for moving the rotatable movable assembly relative to the fixed magnet assembly through a predetermined range of motion, and a plurality of transmission elements positioned between the output and the input. The transmission elements are configured to provide a variable mechanical advantage between the output and the input during at least a portion of the predetermined range of motion.
Claims20
A magnetic base for selectively magnetically latching to a ferromagnetic surface, the magnetic base comprising:
- a magnet holder;
- a fixed magnet assembly supported within the magnet holder;
- a movable magnet assembly supported within the magnet holder;
- and
- a transmission including
- an input,
- an output coupled to the movable magnet assembly for moving the movable magnet assembly relative to the fixed magnet assembly through a predetermined range of motion, and
- a plurality of transmission elements positioned between the output and the input, the elements configured to provide a variable mechanical advantage between the output and the input during at least a portion of the predetermined range of motion.
Dependencies are inferred from the claim text.