Patent No. US11409647 (titled "Universal Protocol For Power Tools") was filed by Milwaukee Electric Tool Corp on Apr 23, 2020.
’647 is related to the field of communication protocols for power tools. Traditionally, power tools operated independently, lacking the ability to communicate with each other or external devices. This limited their functionality and prevented advanced features such as coordinated operation or remote monitoring. The patent addresses this limitation by enabling wireless communication between power tools, allowing them to exchange data and coordinate their actions.
The underlying idea behind ’647 is to enable power tools to communicate wirelessly and securely. This is achieved by establishing a wireless radio link between two power tools, where one tool sends a signal containing an identifier to the other. The receiving tool then verifies the sending tool's authorization based on this identifier before acting on the signal. This allows for coordinated control of tool components across multiple devices.
The claims of ’647 focus on a method and system for power tools to communicate. Claim 1 details a method where a first power tool establishes a wireless link with a second, receives a signal containing an identifier, verifies the second tool's authorization based on the identifier, and then controls a tool component based on the signal. Claim 11 describes a system with two power tools, where the first transmits a signal with an identifier, and the second verifies authorization and controls its tool component accordingly.
In practice, this invention allows for scenarios where one power tool can trigger actions in another. For example, a circular saw could wirelessly signal a vacuum cleaner to start when the saw begins cutting, ensuring efficient dust collection. The authorization step is crucial for preventing unauthorized control and ensuring that only trusted tools can interact with each other, enhancing safety and preventing malicious interference.
This approach differs from prior solutions by enabling direct, secure communication between power tools without relying on a central hub or external network. The use of an identifier for authorization adds a layer of security, preventing unauthorized devices from controlling the tools. This peer-to-peer communication allows for more responsive and reliable coordination compared to systems that rely on intermediary devices or complex network protocols.
In the early 2010s when ’647 was filed, at a time when power tools commonly relied on proprietary communication protocols, interoperability between different tools and systems was typically implemented using custom interfaces. When hardware or software constraints made implementing a universal communication protocol across diverse power tool platforms non-trivial, especially considering the variety of power sources and voltage levels.
The examiner approved the application because the prior art did not disclose or suggest a method and system for power tools to communicate messages by transmitting a signal that includes an identifier. The claimed invention verifies the authorization of the first power tool to send the signal to the second power tool based on this identifier. It also controls the tool component of the second power tool based on the signal combined with other claim limitations.
This patent includes 20 claims, with independent claims 1 and 11. The independent claims are directed to a method and a system for communication between power tools using a wireless radio link and authorization based on an identifier. The dependent claims generally elaborate on specific aspects, components, or functionalities related to the method and system described in the independent claims.
Definitions of key terms used in the patent claims.
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