Eaton Corporation

Arlene M Klumb

James E Hansen

Donald R Haefner

Lawrence J Ryczek

John Albert Kovacich

Michael G Taranowski

Ruth E Hubbell

Bruce M Hatton

Edward J Hummelt

Peter J McGinnis

Donald M Stout

Brian Thomas Pier

Richard A Baumann

Lewis J Gohde

Albert Y Chang

A system for enabling a vehicle operator to control the speed or rate of raising and lowering of a powered lift window. The actuator or switch includes a pressure responsive variable impedance device comprising a variable resistance in one embodiment and a variable capacitance in another embodiment. Increasing force directly on the variable impedance device by the user's finger or an actuator decreases the impedance which is sensed by a voltage divider which outputs a voltage which increases with increasing force. This latter voltage is compared with the output of a triangle wave oscillator and the output of the comparator is a pulse width modulated signal with pulse-width proportional to applied force. The pulses are applied to a power device (Mosfet) which modulates the duty cycle (%) of the current to the window lift mechanism drive motor to give variable motor speed.

Power window switch which incorporates express up/down and window motor

A transducer housing for mounting a port in a combustion chamber has a metal diaphragm exposed to the combustion gasses. The pressure of the combustion gasses deflects the diaphragm which locally deflects a simply supported beam. The beam is formed of refractory material having epitaxially grown crystalline piezoresistors formed on one surface of the beam and connected in a bridge circuit. Noble metal foil leads connect to the piezoresistors to form the bridge and provide attachment pads. The pads are noble metal welded to other noble metal foil pads provided on a ceramic substrate to form a sensor subassembly for mounting adjacent the diaphragm to form a transducer.

Combustion chamber pressure transducer and method of making same

Growing community of inventors

Richfield, WI, United States of America

Arlene M Klumb