Back to results
US 11,686,579 B2Granted
Level with magnetic coupling
AssigneeMilwaukee Electric Tool Corporation
InventorsRichard J. LaSota, Timothy Allen Schultz, Christopher Frederick Boehme, Adam Christopher Resnick
Life of this patent
Estimating the term…
Abstract
A tool, such as a level, including one or more magnetic coupling device is provided. The magnetic coupling device may be a magnetic circuit including metal components surrounding a magnet, such as a permanent rare-earth magnet.
Claims20
A level comprising:
- a level body comprising a base surface;
- at least one level indicator located within the level body;
- a cavity located in the level body defining an opening along the base surface;
- a magnetic circuit coupled to the level body within the cavity, the magnetic circuit comprising:
- a pair of metallic sleeves;
- and
- a permanent magnet located between opposing inner surfaces of the pair of metallic sleeves;
- wherein each of the metallic sleeves having a corner located between an angled surface and an inner vertical surface;
- wherein the each of the metallic sleeves has a width and the permanent magnet has a width;
- wherein the width of each of the metallic sleeves is greater than the width of the permanent magnet.
7 more elements
A level comprising:
- a level body formed from a first metallic material, the level body comprising a base surface configured to engage a workpiece;
- at least one level indicator located within the level body;
- a groove extending in a longitudinal direction formed in the base surface;
- and
- a first magnetic circuit and a second magnetic circuit located within the groove, the first magnetic circuit comprising:
- a first pair of metallic sleeves formed from a second metallic material;
- and
- a first permanent magnet located between opposing inner surfaces of the first pair of metallic sleeves;
- the second magnetic circuit comprising:
- a second pair of metallic sleeves formed from the second metallic material;
- and
- a second permanent magnet located between opposing inner surfaces of the second pair of metallic sleeves.
9 more elements
A level comprising:
- a level body comprising a base surface configured to engage a workpiece;
- at least one level indicator located within the level body;
- a cavity located in the level body defining an opening along the base surface;
- and
- a magnetic circuit located within the cavity, the magnetic circuit comprising:
- a permanent magnet including a first outer lateral surface and a second outer lateral surface;
- a first sleeve located on a first side of the permanent magnet;
- and
- a second sleeve positioned on a second side of the permanent magnet opposite from the first sleeve.
6 more elements
Dependencies are inferred from the claim text.