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Inventor: George G. Zipfel, Jr.


Address: Summit, NJ
No. of patents: 5
Last patent issue date: 09/07/1999

NumberTitleIssue Date
5949162Unbalanced force generation in motors
In many uses of electrical motors, the interaction of a tool being powered, e.g., a milling machine, and the workpiece being worked on by the motor induces mechanical vibrations which adversely affect the functioning of the tool as well as inducing wear p...
09/07/1999
5596413Sub-micron through-the-lens positioning utilizing out of phase segmented gratings
Through-the-lens alignment during deep UV lithographic processing in the manufacture of VLSI is accomplished without shifting the mask or wafer from the exposure position. Introduction and extraction of alignment light of actinic wavelength depends on bea...
01/21/1997
5493165Force generator for electrostrictive actuators
This disclosure describes a method for producing high-performance layered-element electrostrictive or piezoelectric actuators, and the resulting product. The process calls for steps that minimize decreases of the stack stiffness which usually characterize...
02/20/1996
5438627Reactance-mass actuator
Disclosed is an electrodynamic moving coil actuator comprising one or more separate coils contained in interior spaces of a reactance mass. The coils are oriented in closely spaced parallel zones within the interior spaces. The spaces are formed and posit...
08/01/1995
4407054Method of making electromechanical transducers using improved flexible composite piezoelectric material
A method of making flexible composite piezoelectric materials exhibiting hydrostatic response and having a stable response over time is given. A prepolymer material is combined with a piezoelectric material and polarized by applying an electric field whil...
10/04/1983
 
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