Hard Hat Lamp Attachment System

Patent No. US11019870 (titled "Hard Hat Lamp Attachment System") was filed by Milwaukee Electric Tool Corp on Oct 29, 2020.

What is this patent about?

’870 is related to the field of hard hat accessories, specifically systems for attaching lamps or other devices to hard hats. Hard hats are essential safety equipment in many industries, and the ability to securely and conveniently mount lighting is often crucial for workers in low-light conditions. Existing solutions, such as straps or permanent mounting clips, can be unreliable, cumbersome, or compromise the structural integrity of the hard hat.

The underlying idea behind ’870 is to provide a non-destructive and easily removable mounting system for hard hat accessories. This is achieved by incorporating raised mounting ridges on the hard hat's surface and a rigid mounting bracket with receiving slots that securely grip these ridges. The bracket then serves as a stable platform for attaching lamps or other tools using a flexible strap or other fastening mechanisms.

The claims of ’870 focus on a hard hat system comprising a hard hat with a raised mounting ridge and a mounting bracket. The bracket has slots at either end that engage the opposing edges of the mounting ridge , allowing it to be securely and removably attached. The slots extend along the entire height of the mounting bracket, ensuring a stable connection.

In practice, the user simply slides the mounting bracket onto the raised mounting ridge of the hard hat, with the receiving slots clamping onto the ridge's edges. A flexible strap, threaded through channels on the bracket, then secures the lamp or other accessory to the bracket. This design allows for easy attachment and removal of accessories without requiring any permanent modifications to the hard hat itself.

This approach differs from prior art solutions that rely on straps that can slip or shift, or on permanent mounting clips that require drilling or other destructive methods. By using a rigid bracket that clips onto a pre-existing ridge , the invention provides a more secure and versatile mounting solution that does not compromise the hard hat's safety rating or warranty. The symmetrical design also allows for accessories to be mounted on either the front or back of the hard hat.

How does this patent fit in bigger picture?

Technical landscape at the time

In the late 2010s when ’870 was filed, hard hats at a time when hard hats were typically implemented using standardized mounting points or surfaces to accommodate various accessories. These accessories, such as lamps or cameras, often relied on mechanical attachment mechanisms to ensure secure and reliable integration with the hard hat. When hardware or software constraints made designing a universal attachment system non-trivial.

Novelty and Inventive Step

The examiner approved the application because the claims presented in the amendment filed on April 13, 2021, are allowable over the prior art of record.

Claims

This patent contains 21 claims, with independent claims 1 and 12. Independent claim 1 focuses on a hard hat system comprising a hard hat and a mounting bracket, while independent claim 12 focuses on a mounting bracket configured to couple to a hard hat mounting ridge. The dependent claims generally elaborate on specific features, dimensions, and configurations of the hard hat system and the mounting bracket.

Key Claim Terms New

Definitions of key terms used in the patent claims.

Term (Source)Support for SpecificationInterpretation
First slot
(Claim 1, Claim 12)
“The receiving slots engage to opposing edges of the mounting ridge to couple the mounting bracket to the mounting ridge. The rigid mounting bracket has receiving slots to receive the ridge of the mounting ridge and secure the rigid mounting bracket to the hard hat.”A slot located at the first end of the mounting bracket that receives and encloses one of the opposing edges of the raised mounting ridge.
Mounting bracket
(Claim 1, Claim 12)
“The hard hat lighting system includes a lamp, a hard hat, and a mounting bracket. The hard hat has a mounting ridge with opposite edges and located on a side of the hard hat. The mounting bracket securely and removably mounts on the mounting ridge of the hard hat and removably couples to the lamp.”A component that securely and removably attaches to the raised mounting ridge of the hard hat using slots.
Raised mounting ridge
(Claim 1)
“The hard hat has a mounting ridge with opposite edges and located on a side of the hard hat. The mounting bracket securely and removably mounts on the mounting ridge of the hard hat and removably couples to the lamp. The receiving slots engage to opposing edges of the mounting ridge to couple the mounting bracket to the mounting ridge.”A raised structure extending outward from the front surface of the hard hat, having opposing edges for attachment.
Second slot
(Claim 1, Claim 12)
“The receiving slots engage to opposing edges of the mounting ridge to couple the mounting bracket to the mounting ridge. The rigid mounting bracket has receiving slots to receive the ridge of the mounting ridge and secure the rigid mounting bracket to the hard hat.”A slot located at the second end of the mounting bracket that receives and encloses the other of the opposing edges of the raised mounting ridge.

Litigation Cases New

US Latest litigation cases involving this patent.

Case NumberFiling DateTitle
1:25-cv-00143Feb 4, 2025Klein Tools, Inc. V. Milwaukee Electric Tool Corporation

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US11019870

MILWAUKEE ELECTRIC TOOL CORP
Application Number
US17084303
Filing Date
Oct 29, 2020
Status
Granted
Expiry Date
Nov 20, 2039
External Links
Slate, USPTO, Google Patents