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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5467656-A, on 21 November 1995. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003296

Measurement system for hand tools

Published
Permanent URL
Classification
Sensors, Controls & Machine Vision › Force and Pressure Sensing
Assignee
LIBERTY MUTUAL INSURANCE CO
Original source
US-5467656-A, the United States Patent and Trademark Office, 21 November 1995
Document SHA-256
0219ffe2187c7e8492ad09f1bc63f484444e09f581fa253298f13702c734a5ac

A measurement system for measuring hand tools includes a number of instrumented tools and a data collector. The data collector has a processor which can operate in a task analysis mode in which data is received, stored, and processed over a user-determined period of time. A number of different tools with different adaptor configurations can be coupled to a receptacle on the housing of the data collector. The collector has recognition circuitry for determining which type of tool is plugged into the receptacle, and, in response, the processor retrieves parameters needed to process the data and which are related to the recognized tool. The instrumented tools are designed to simulate actual tools used in the work place, and thus have substantially the same size, shape, weight, weight distribution, and feel of actual working models of the tools. The sensors can include strain gages for measuring force and torque, position detectors for measuring hand position, sensors for measuring grip, accelerometers for measuring acceleration of the tools and sensors for measuring an angle of rotation of a tool.

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Abstract

A measurement system for measuring hand tools includes a number of instrumented tools and a data collector. The data collector has a processor which can operate in a task analysis mode in which data is received, stored, and processed over a user-determined period of time. A number of different tools with different adaptor configurations can be coupled to a receptacle on the housing of the data collector. The collector has recognition circuitry for determining which type of tool is plugged into the receptacle, and, in response, the processor retrieves parameters needed to process the data and which are related to the recognized tool. The instrumented tools are designed to simulate actual tools used in the work place, and thus have substantially the same size, shape, weight, weight distribution, and feel of actual working models of the tools. The sensors can include strain gages for measuring force and torque, position detectors for measuring hand position, sensors for measuring grip, accelerometers for measuring acceleration of the tools and sensors for measuring an angle of rotation of a tool.

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Publication information

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Citation

OpenTechnical Publication OT-2026-000003296, “Measurement system for hand tools,” published September 15, 2026 at 20:04:23 UTC, https://opentechnical.org/p/OT-2026-000003296.

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This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.