Kyocera Senco Industrial Tools, Inc.

Cummins Inc.

Wausau Paper Towel & Tissue, LLC

Essity Operations Wausau LLC

Steven Roy Streicher

Adam Troy Elliott

Thomas A McCardle

Christopher D Klein

William H Hoffman

Mark Henson

Thomas Matthew Webster

Anthony D Kabbes

Dan Knight

Kenneth E Carper

Daniel James Knight

Ken Carper

James A Freeman

John E Taylor

Thomas A Mccardle

Adam Elliott

A gas spring fastener driving tool, having a cylinder filled with compressed gas that forces a piston/driver through a driving stroke movement; a rotary-to-linear lifter, then moves the piston/driver back to its ready position, preparing the tool for another driving stroke. The driver has protrusions (teeth) along its edges to contact extending pins of the lifter member, for lifting the driver during a return stroke. The driver's movements are detected by position sensors, and the information provided by those position sensors is used to prevent the lifter from impacting against the driver in situations where the driver did not finish its driving stroke in a correct ('in specification') position. The use of two position sensors allows a Dry Fire diagnostic test to determine if gas pressure in the gas storage chamber is too high, or has become too low.

Fastener driving tool with driver position sensors

A dual roll paper towel dispenser, a method of dispensing towel from a dual roll paper towel dispenser, and a method of servicing a dual roll paper towel dispenser are disclosed herein. The dual roll paper towel dispenser can be provided with a dispenser mechanism disposed in a dispenser housing. The dispenser mechanism can include a first drive roller for dispensing paper from an upper first roll of paper and a second drive roller for dispensing paper from a lower second roll of paper. The dispenser mechanism can further include a drive system including a motor for selectively operating the first drive roller and the second drive roller, wherein the drive system powers the motor in a first rotational direction to actuate the first drive roller and powers the motor in a second rotational direction opposite the first rotational direction to actuate the second drive roller.

Dual roll paper towel dispenser

The present invention contemplates a system and method for controlling or adjusting the accuracy of an exhaust gas sensor utilizing the impedance of the sensing element. In one embodiment, a periodic AC signal is superimposed over low frequency or DC output signal produced by the gas sensor. The AC current flowing through the gas sensor is a function of the actual impedance of the sensor, which is in turn a function of the temperature of the sensor. Thus, the invention further contemplates an impedance sensor circuit connected to an output of the gas sensor. The output of the impedance sensor circuit is a peak voltage that is indicative of the AC voltage drop across the sensor, and ultimately the impedance of the sensing element. This peak voltage is utilized to control the operation of the heating element in a closed loop control system in which the thermal output of the heating element is continuously varied as a function of the magnitude signal to accurately maintain a consistent temperature for the exhaust gas sensor. In a specific embodiment of the invention, the impedance sensor circuitry includes a bandpass filter centered around the frequency of the superimposed AC signal to eliminate spurious noise. The output from the bandpass filter is provided to a half-wave rectifier, the output of which is the peak voltage signal indicative of the sensor impedance.

System and method for controlling a self-heated gas sensor based on sensor impedance

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Cincinnati, OH, United States of America

Steven Roy Streicher