Patent
Apparatus and method for restricting the discharge of fasteners from a tool
TLDR
In this paper, a method for discharging fastening elements and a method of preventing a device from discharging a fastening device into human flesh was described. But the method was not discussed.Abstract:
A device for discharging fastening elements, and a method of preventing a device from discharging fastening devices into human flesh, are disclosed. The device includes a coil proximate a location of discharge, a capacitive element coupled in parallel with the conductive coil to form a resonant tank circuit, an oscillator that drives the tank circuit, a frequency detector, an amplitude control circuit and a processor. The detector detects a frequency of oscillation of the tank circuit as affected by a material proximate the coil. In response to an electrical signal from the oscillator, the control circuit generates a control signal that is provided back to the oscillator. Based upon the frequency and an additional signal functionally related to the control signal, the processor provides an output signal that prevents the device from discharging when the material proximate the coil is human flesh.read more
Citations
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Patent
Brake positioning system
TL;DR: In this paper, a saw is described as having a detection system adapted to detect a dangerous condition between a person and a saw blade, and a brake adapted to stop the saw blade in response to detection of the dangerous condition.
Patent
Retraction system for use in power equipment
Stephen F. Gass,David A. Fanning,David S. D'Ascenzo,Joel F. Jensen,Sung H. Kim,Andrew L. Johnston +5 more
TL;DR: In this article, a detection system adapted to detect one or more dangerous conditions between a person and the cutting tools, and a reaction system associated with the detection system is configured to retract the cutting tool at least partially away from the cutting region upon detection of a dangerous condition.
Patent
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Stephen F. Gass,J. David Fulmer +1 more
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Firing subsystem for use in a fast-acting safety system
Stephen F. Gass,Andrew L. Johnston,Joel F. Jensen,Sung H. Kim,David A. Fanning,Robert L. Chamberlain +5 more
TL;DR: In this paper, the authors describe a cutting machine with high-speed safety systems, and a reaction system that stops the cutting tool upon detection of a dangerous condition between a cutting tool and a person.
Patent
Safety system for power equipment
TL;DR: In this article, safety systems for power equipment are disclosed, such as a detection system adapted to detect contact between a person and a working portion of a machine, where the detection system is adapted to capacitively impart an electric charge on the working portion and to detect when that charge drops.
References
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