Donald A Wolf

US Patent:

6856457, Feb 15, 2005

Filed:

Mar 26, 2002

Appl. No.:

10/109340

Inventors:

William I. Vogt - Baraboo WI, US
Michael J. Szulczewski - Middleton WI, US
Donald J. Wolf - Madison WI, US

Assignee:

Prairie Technologies, Inc. - Middleton WI

International Classification:

G02B021/06

US Classification:

359389, 359368, 359738

Abstract:

Disclosed are microscopes, preferably confocal microscopes, that include aperture plates having one or more arrays of apertures defined therein. The aperture plate is disposed in a position within an incoming light beam such that the incoming light beam is spatially filtered as it passes through the array of apertures. In certain embodiments of the invention, the aperture plate is fixed and immovable, in others, the aperture plate is translatable within a plane of confocality.

US Patent:

20160329780, Nov 10, 2016

Filed:

Feb 4, 2015

Appl. No.:

15/108059

Inventors:

- Madison WI, US
Daniel Colin Ludois - Madison WI, US
William P. Mason - Brooklyn WI, US
Donald Wolf - Madison WI, US

International Classification:

H02K 11/028
H02K 11/40

Abstract:

Rotary capacitor assemblies divert or mitigate high-frequency electrical currents and voltages in bearings of electric machinery (e.g., motors and generators) without direct contact with the bearings. The assemblies include rotating capacitors, in which surfaces in close proximity are free to rotate with respect to another while maintaining relative surface area and separation distance. A lubricant (such as air or oil) facilitates capacitive surfaces hydrodynamically “floating” on each other. A shunt body is connected electrically in parallel with the bearings of the machine, providing a non-contact or nearly non-contact electrical pathway for damaging high-frequency currents an voltages to be shunted around the mechanical load carrying bearings.