Erik D Walker

US Patent:

8400025, Mar 19, 2013

Filed:

Feb 17, 2010

Appl. No.:

12/658961

Inventors:

Erik Keith Walker - Aurora CO, US
James Lee Elliott - Denver CO, US

International Classification:

G05F 1/70

US Classification:

307109, 307154, 323205, 323364

Abstract:

An apparatus and method for substantially reducing the electrical energy consumption of a. c. induction motor-driven appliances by connecting a database predetermined capacitance in parallel with the motor-driven appliances and connecting a database predetermined inductance in series with the a. c. induction motor-driven appliances to effect the optimal power factor correction and optimal inrush current limiting of such motor-driven appliances thereby conserving electrical energy and reducing electrical energy costs. The databases of the present invention which specify the optimal power factor correction capacitance value and an optimal inductance value for specific a. c. induction motor-driven appliances eliminates the need for preliminary power factor and inrush current related electrical measurements and making the mass production and sale of the present invention practical.

US Patent:

45531293, Nov 12, 1985

Filed:

Aug 5, 1983

Appl. No.:

6/520669

Inventors:

John B. McNesby - Mesa AZ
Erik K. Walker - Denver CO

Assignee:

GTE Communication Systems Corporation - Phoenix AZ

International Classification:

H03K 1324

US Classification:

340347DD

Abstract:

In a data transmission system, apparatus for converting a subrate binary data stream into a binary signal at the line transmission rate comprises means for periodically accepting a date byte from the subrate data stream and; means for expanding the data byte by one additional bit by adding a control bit in the first bit position of the accepting means. The apparatus additionally comprises means for recirculating the expanded data byte through the accepting means a predetermined number of times and means for serially reading out bits of the expanded data byte at the line transmission rate.

US Patent:

51085879, Apr 28, 1992

Filed:

Oct 30, 1989

Appl. No.:

7/429068

Inventors:

Erik K. Walker - Denver CO

International Classification:

B03C 123
B03C 126

US Classification:

209212

Abstract:

Electrodynamic separation of non-ferromagnetic, free-flowing materials, in which at least one component of the material to be processed is electrically conductive, whereby such material is caused to free-fall into a region of space permeated by time and space varying magnetic fields which induce eddy currents in the electrically conductive particles which produce forces on such particles that result in substantially different free-fall trajectory than that of nonconductive particles. Conductive particles are separated on the basis of mass, electrical conductivity and magnetic susceptibility. The time and space varying magnetic fields are generated by a plurality of permanent magnets or electromagnets attached to a rotor assembly such that the polarity of adjacent magnets is caused to reverse so that rotation of the rotor assembly generates magnetic fields which may vary in time and space to the maximum extent.