Kai Chi Chan

US Patent:

7808352, Oct 5, 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 USA - Elgin IL

International Classification:

H01F 21/04
H01F 27/24
H01F 27/28

US Classification:

336115, 336212, 336117, 336222

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:

8130066, Mar 6, 2012

Filed:

Sep 22, 2010

Appl. No.:

12/887722

Inventors:

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

Assignee:

Schleifring Medical Systems USA - Elgin IL

International Classification:

H01F 21/04
H01F 27/24
H01F 27/28

US Classification:

336115, 336212, 336117, 336222

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.