Milwaukee’s Oct. 27 Patents: A Voltage Detector for Hard Hats, a Fold-Up Panel Saw and More

Patent drawing of a hard hat with a voltage detection device clipped to the front of the brim, from U.S. Patent No. 12,777,271, drawing sheet 1 (FIG. 1 and FIG. 2)

A note on what this is: everything below comes from a U.S. patent that the USPTO granted on Oct. 27, 2026. A patent is not a product announcement. The company has not confirmed a product based on it, and there is no release date, price or brand name attached to it. Companies patent many ideas that never reach store shelves.

Milwaukee Electric Tool Corporation picked up these four U.S. patents on Oct. 27, 2026: a voltage detector that mounts on a hard hat, a panel saw on a stand with fold-up arms, a screwdriver that senses its own clutch setting, and a system for finding lost tools. Here is what each patent actually describes and claims. For more on the company, see our Milwaukee Power Tools page.

A voltage detector for your hard hat: U.S. Patent No. 12,777,271

Patent drawing of a hard hat with a voltage detection device clipped to the front of the brim, from U.S. Patent No. 12,777,271, drawing sheet 1 (FIG. 1 and FIG. 2)
Drawing from U.S. Patent No. 12,777,271 (FIG. 1 and 2). Credit: USPTO, U.S. Patent No. 12,777,271.

The patent is titled “Voltage Detection Devices and Safety Headwear Coupling Systems.” Claim 1 describes a safety device with a housing that couples to the shell of safety headwear, like a hard hat. The housing carries several electrodes that generate detection signals when they sense a nearby object carrying an electrical current.

A controller in the housing analyzes those signals to work out both the distance and the direction to the live object. The user can select a target range of directions, and the controller compares the direction of the live object against that range. A notification device then sounds an alarm, and the claim says the alarm indicates the distance to the object.

The drawings show the device clipped to the front of a full-brim hard hat.

  • Patent: U.S. Patent No. 12,777,271 (B2), granted Oct. 27, 2026 (full USPTO PDF)
  • Title on the patent: Voltage Detection Devices and Safety Headwear Coupling Systems
  • Assignee (as printed): Milwaukee Electric Tool Corporation, Brookfield, WI (US)
  • Inventors: Jesse J. Brown, Todd Andrew Zeilinger, Samuel L. Lombardi, Brandon L. Feil, Thomas S. Whitburn and Alexander S. Chirban
  • Filed: Dec. 5, 2024
  • Claims: 17

Our opinion

What We Think They’re Making

We think this could become a clip-on voltage alert for hard hats, aimed at line workers, electricians and anyone working near live overhead lines. A hands-free warning that tells you how close you are, and from which direction, would be a step past a pocket voltage pen.

This is our opinion, not a product announcement. The patent does not confirm a product, brand, price or release date.

A panel saw on a fold-up stand: U.S. Patent No. 12,773,805

Patent drawing of a panel saw assembly with a saw on a vertical track and fold-out arms, from U.S. Patent No. 12,773,805, drawing sheet 1 (FIG. 1)
Drawing from U.S. Patent No. 12,773,805 (FIG. 1). Credit: USPTO, U.S. Patent No. 12,773,805.

The patent is titled “Panel Saw Assembly.” Claim 1 describes a stand with a center post and two arms, one pivotably coupled to each side of the post. A leg holds the stand at an incline, a track is coupled to the stand, and a saw moves along the track.

The key part is the arms. The claim says they adjust relative to the post between a collapsed state and an opened state. The drawing shows a saw riding on a vertical track with arms that fold out on both sides.

  • Patent: U.S. Patent No. 12,773,805 (B2), granted Oct. 27, 2026 (full USPTO PDF)
  • Title on the patent: Panel Saw Assembly
  • Assignee (as printed): MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
  • Inventors: Mark Frykman
  • Filed: Oct. 10, 2023
  • Claims: 20

Our opinion

What We Think They’re Making

We think this could become a portable panel saw for cutting full sheets of plywood or other sheet goods on site. Arms that fold in against the post would make a big tool easier to move and store than a fixed shop panel saw.

This is our opinion, not a product announcement. The patent does not confirm a product, brand, price or release date.

A screwdriver that knows its clutch setting: U.S. Patent No. 12,773,761

Patent drawing of a cordless screwdriver with its battery pack shown separately, from U.S. Patent No. 12,773,761, drawing sheet 1 (FIG. 1)
Drawing from U.S. Patent No. 12,773,761 (FIG. 1). Credit: USPTO, U.S. Patent No. 12,773,761.

The patent is titled “Powered Screwdriver Including Clutch Setting Sensor.” Claim 1 describes a rotary power tool with a clutch that limits the torque at the output shaft. The clutch uses a compression spring around the output shaft and a conductive target that engages the spring. Turning the clutch adjustment changes the length of the spring.

Here’s the new part. An inductive sensor sits near the conductive target, and an electronic control unit reads the sensor’s output to determine a parameter of the clutch. The claim also says the conductive target has a narrow portion that extends toward the sensor. In plain terms, the tool can electronically sense how its clutch is set.

This patent is a continuation of an earlier application that is now U.S. Patent No. 12,059,777.

  • Patent: U.S. Patent No. 12,773,761 (B2), granted Oct. 27, 2026 (full USPTO PDF)
  • Title on the patent: Powered Screwdriver Including Clutch Setting Sensor
  • Assignee (as printed): MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
  • Inventors: Jacob P. Schneider, Maxwell I. Merget and Douglas R. Fieldbinder
  • Filed: Aug. 12, 2024
  • Claims: 19

Our opinion

What We Think They’re Making

We think this could show up in a compact cordless screwdriver that knows which clutch number you picked. That could let the tool show the setting, or work together with electronic torque control, which would help anyone driving lots of small fasteners into cabinets, panels or electrical devices.

This is our opinion, not a product announcement. The patent does not confirm a product, brand, price or release date.

A tool that helps find itself when it’s lost: U.S. Patent No. 12,776,176

Patent drawing of power tools and a battery pack communicating wirelessly with a laptop and a server, from U.S. Patent No. 12,776,176 (FIG. 1)
Drawing from U.S. Patent No. 12,776,176 (FIG. 1). Credit: USPTO, U.S. Patent No. 12,776,176.

The patent is titled “Power Tool With Compartment for Receiving Another Device.” Claim 1 describes a power tool with a compartment in the housing that holds an insertable wireless communication device. That device periodically transmits an identification code.

The claim then walks through a lost-tool process. Using the interface on an external device, the user marks the tool as lost. That sends a request to a server, which flags the tool as lost and returns its last known location. Later, when a second external device picks up the tool’s identification code, the server gets that device’s geographic coordinates and sends back an updated last known location, and the user gets a notification.

This one has a long history. It is a continuation of a chain of applications going back to 2018, with provisional applications filed in 2017.

  • Patent: U.S. Patent No. 12,776,176 (B2), granted Oct. 27, 2026 (full USPTO PDF)
  • Title on the patent: Power Tool With Compartment for Receiving Another Device
  • Assignee (as printed): Milwaukee Electric Tool Corporation, Brookfield, WI (US)
  • Inventors: Tauhira Hoossainy, Christian P. Coulis and Stephen Matson
  • Filed: May 19, 2025
  • Claims: 20

Our opinion

What We Think They’re Making

We think this lines up with the tool-tracking side of Milwaukee’s ONE-KEY system. Crowd-sourced location, where other users’ phones report a lost tool as they pass by, is the kind of feature contractors with big tool fleets would value.

This is our opinion, not a product announcement. The patent does not confirm a product, brand, price or release date.

Final Thoughts

Two of these patents describe whole tools, a hard hat voltage detector and a fold-up panel saw. The other two dig into the electronics behind tools: sensing the clutch setting and tracking lost tools. As always, a patent is not a promise of a product, but it shows where the engineering work is going. We’ll keep watching the weekly grants.

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