Gregory M Dunlap

US Patent:

20110057758, Mar 10, 2011

Filed:

Sep 22, 2010

Appl. No.:

12/887722

Inventors:

Gregory M. Dunlap - St. Charles IL, US
Kai Chi Chan - Bloomingdale IL, US

International Classification:

H01F 21/00
H01F 27/30
H02K 15/00

US Classification:

336131, 336197, 29596

Abstract:

Wire-holders are provided that confine a single wire over a limited arc section and that are interspersed with ferrite ingots that provide wire-ways for several wires are utilized in the winding of the coils of a transformer. A method for consistently producing windings having accurate wire placement on rotors, stators, and other electrical componentry is also provided.

US Patent:

20100225433, Sep 9, 2010

Filed:

Mar 5, 2009

Appl. No.:

12/398560

Inventors:

Gregory M. Dunlap - St. Charles IL, US
Kai Chi Chan - Bloomingdale IL, US

Assignee:

SCHLEIFRING MEDICAL SYSTEMS, INC. - Elgin IL

International Classification:

H01F 27/28
H01F 27/30

US Classification:

336197, 29605

Abstract:

Wire-holders are provided that confine a single wire over a limited arc section and that are interspersed with ferrite ingots that provide wire-ways for several wires are utilized in the winding of the coils of a transformer. A method for consistently producing windings having accurate wire placement on rotors, stators, and other electrical componentry is also provided.

US Patent:

20100148505, Jun 17, 2010

Filed:

Dec 16, 2008

Appl. No.:

12/336195

Inventors:

Gregory M. Dunlap - St. Charles IL, US
Kai Chi Chan - Bloomingdale IL, US
Jason S. Katcha - Whitefish Bay WI, US
Thomas A. Spengler - Kingston IL, US
Jeremy A. Miller - Lake In The Hills IL, US

International Classification:

H02P 9/04
H01F 27/00

US Classification:

290 44, 336120

Abstract:

A transformer is provided comprising a first member upon which a first circuit is wound; a second member upon which a second circuit is wound such that power is transferred to the second circuit in a contact-less manner; and a signal transmitter on the first member in close proximity to an appropriate receiver on the second member together with a signal transmitter on the second member in close proximity to an appropriate receiver on the first member such that said transmitters and receivers exchange signals in a contact-less manner, whereby the circuits are embedded in a high thermal conductivity resin. An exemplary embodiment of the invented transformer is one where the second member rotates relative to the first member.

US Patent:

20090185658, Jul 23, 2009

Filed:

Jan 18, 2008

Appl. No.:

12/016824

Inventors:

Jason Stuart Katcha - Whitefish Bay WI, US
Gregory Martin Dunlap - St. Charles IL, US
Kai Chi Chan - Bloomingdale IL, US

International Classification:

H05G 1/02
H02P 9/04
H01F 21/06

US Classification:

378 15, 290 44, 290 55, 336131

Abstract:

Methods and apparatus for an imaging system are provided. The imaging system includes a gantry having a stationary member coupled to a rotating member. The rotating member has an opened area proximate an axis about which the rotating member rotates. An x-ray source provided on the rotating member. An x-ray detector may be disposed on the rotating member and configured to receive x-rays from the x-ray source. A rotary transformer having circumferentially disposed primary and secondary windings may form part of a contactless power transfer system that rotates the rotatable portion of the gantry at very high speeds, the primary winding being disposed on the stationary member and the secondary winding being disposed on the rotating member.