UnfoldIPThemes

Company patents

Harbor Freight Tools USA, Inc.

Harbor Freight Tools USA, Inc. shows a surprising and strong emerging focus on Hand Tools, with its patenting in this category growing by 100.0% year-over-year in both 2025 and so far in 2026, now representing 9.9% of its total portfolio. Concurrently, the company appears to be shifting priorities away from Welding & Soldering, which saw a 100.0% decline in 2025 and has no patents filed so far in 2026.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

71 US filings (since 2023) · 4 categories · 10 themes

Power Tool Drivetrain & Mechanics

Design and optimization of the mechanical components and power transmission systems within powered hand tools, including motors, gears, spindles, and impact mechanisms, for efficiency, durability, and compact form factor.

Hand Tools
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8since 2023
+200.0%YoY
Welding & Soldering Tool Design

Design and features of welding and soldering tools, fixtures, and accessories that enhance user safety, ergonomics, operational efficiency, and precise workpiece manipulation, including protective equipment and clamping mechanisms.

Welding & Soldering
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5since 2023
+100.0%YoY
Integrated Tool Features & Ergonomics

Design elements and integrated components that improve the usability, comfort, and versatility of hand tools, such as built-in lighting, vibration reduction, modular storage, or adjustable form factors.

Hand Tools
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5since 2023
0.0%YoY
Integrated Tool Lighting

Lighting systems designed to be integrated directly into handheld tools or portable work equipment, often featuring compact designs, robust housings, and specific light direction for work areas.

Lighting Devices (Functional Features)
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3since 2023
new
Integrated Multi-Component Spray Systemsfiltered

Spraying devices designed to handle, mix, or independently dispense multiple distinct fluid components, often with mechanisms for selection, blending, or sequential application.

Spraying & Atomizing
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3since 2023
new
Precision Dosing & Targeted Spraying

Systems and methods for accurately controlling the volume, location, and characteristics of sprayed fluids, often involving sensors, feedback, or specific nozzle geometries for precise application.

Spraying & Atomizing
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2since 2023
new
Agricultural Spraying Automation & Control

Technologies for improving the efficiency, precision, and environmental impact of spraying applications in agriculture, including smart nozzles, boom control, and real-time sensing.

Spraying & Atomizing
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2since 2023
new
Adaptive Lighting Control Systems

Systems and methods for dynamically adjusting light output, distribution, color, or intensity based on environmental conditions, user presence, content, or specific application needs.

Lighting Devices (Functional Features)
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2since 2023
new
Welding Process Control

Systems and methods for precisely controlling welding parameters such as power, speed, oscillation, and material feed to optimize weld quality, consistency, and efficiency, often involving automated or semi-automated processes.

Welding & Soldering
Who else files here? →
2since 2023
n/a
Electronic Component Bonding

Specialized welding or bonding techniques and apparatuses tailored for joining small-scale electronic components, integrated circuits, or semiconductor wafers, emphasizing precision, miniaturization, and electrical connectivity.

Welding & Soldering
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1since 2023
n/a

Patents

Showing 1-4 of 4

Integrated Multi-Component Spray Systems
Page 1 of 1
US 12661671 B2GRANTED
B05B9/04

Portable airless fluid dispensing apparatus and valves

Filed:2023-12-13Pub:2026-06-23
Applicant:Harbor Freight Tools USA, Inc.

An airless fluid dispensing apparatus, a stem-less spray valve, and a pressure relief valve are disclosed. The stem-less spray valve comprises a generally cylindrical valve body; a fluid conduit, operable to allow a flow of the fluid from a pump, at least partially through the valve body, to a spray orifice; a movable plug disposed at least partially within the valve body; a seat, shaped to conform to a shape of the movable plug; a spring disposed within the valve body. The spring biases the movable plug against the seat to prevent the fluid from flowing through the fluid conduit to the spray orifice when a fluid pressure is below a spray pressure threshold. When the fluid pressure reaches or exceeds the spray pressure threshold, the spring compresses, at least partially retracting the movable plug away from the seat, and allowing the fluid to flow through the fluid conduit to the spray orifice.

US 20250196169 A1APPLICATION
B05B9/04

PORTABLE AIRLESS FLUID DISPENSING APPARATUS AND VALVES

Filed:2023-12-13Pub:2025-06-19
Applicant:Harbor Freight Tools USA, Inc.

An airless fluid dispensing apparatus, a stem-less spray valve, and a pressure relief valve are disclosed. The stem-less spray valve comprises a generally cylindrical valve body; a fluid conduit, operable to allow a flow of the fluid from a pump, at least partially through the valve body, to a spray orifice; a movable plug disposed at least partially within the valve body; a seat, shaped to conform to a shape of the movable plug; a spring disposed within the valve body. The spring biases the movable plug against the seat to prevent the fluid from flowing through the fluid conduit to the spray orifice when a fluid pressure is below a spray pressure threshold. When the fluid pressure reaches or exceeds the spray pressure threshold, the spring compresses, at least partially retracting the movable plug away from the seat, and allowing the fluid to flow through the fluid conduit to the spray orifice.

US 11819863 B2GRANTED
B05B9/01

Paint sprayer saddle seal insertion tool and method

Filed:2022-09-26Pub:2023-11-21
Applicant:Harbor Freight Tools USA, Inc.

A reversible paint spray tip, including a barrel portion configured to be inserted into a barrel bore of a tip holder, and a tip flag portion attached to the barrel portion and positioned generally transversely of the barrel portion. The tip flag portion includes a handle portion defining a handle axis, integrally formed with a first end of the tip flag portion, and an alignment portion defining an alignment axis, integrally formed with a second and opposing end of the tip flag portion. The handle axis and the alignment axis are non-collinear and intersect at an angle relative to the handle portion to prevent interference of the handle portion and barrel portion with one or more guards of the tip holder when the alignment portion is positioned in the barrel bore while in an alignment position.

US 20210283640 A1APPLICATION
B05B15/534

PAINT SPRAYER SADDLE SEAL INSERTION TOOL AND METHOD

Filed:2020-03-11Pub:2021-09-16
Applicant:Harbor Freight Tools USA, Inc.

A reversible paint spray tip, including a barrel portion configured to be inserted into a barrel bore of a tip holder, and a tip flag portion attached to the barrel portion and positioned generally transversely of the barrel portion. The tip flag portion includes a handle portion defining a handle axis, integrally formed with a first end of the tip flag portion, and an alignment portion defining an alignment axis, integrally formed with a second and opposing end of the tip flag portion. The handle axis and the alignment axis are non-collinear and intersect at an angle relative to the handle portion to prevent interference of the handle portion and barrel portion with one or more guards of the tip holder when the alignment portion is positioned in the barrel bore while in an alignment position.

1