Phillip S Welch

US Patent:

8491253, Jul 23, 2013

Filed:

Nov 3, 2008

Appl. No.:

12/290627

Inventors:

Lance G. Hays - Anaheim CA, US
Phillip R. Welch - Irvine CA, US

Assignee:

Energent Corporation - Santa Ana CA

International Classification:

F01B 25/00

US Classification:

415 48, 415 80

Abstract:

A turbine is operatively connected to load structure, to transmit rotary drive thereto, with two-phase flow nozzle receiving pressurized flow to rotate the turbine, the nozzle structure configured to expand flow consisting of two or more of the following phases:.

US Patent:

20120006024, Jan 12, 2012

Filed:

Jul 9, 2010

Appl. No.:

12/803911

Inventors:

Lance G. Hays - Anaheim CA, US
Phillip R. Welch - Irvine CA, US

International Classification:

F01K 25/08
F22D 11/02

US Classification:

60651, 60692

Abstract:

A multi-component apparatus characterized as performing a two-phase thermodynamic cycle, for conversion of heat energy to useful power comprises: fluid means consisting to two or more chemical components to absorb heat energy, the fluid means providing an increasing temperature and increasing fraction of gas phase as increasing amounts of heat are absorbed, expander means operating to convert the enthalpy in a received mixture of gas and liquid, formed in said fluid means, as a result of the said heat energy absorbed by the fluid means, to mechanical, shaft power, heat exchanger means operating to transfer the heat energy to be absorbed by the fluid means, condenser means operating to reject the unconverted enthalpy, by the expander means, in the fluid means, thereby condensing any gas to convert the fluid means to liquid, and pump means operating to pressurize liquid fluid means leaving the condenser means, in order to return the fluid means to the heat exchanger means, closing the thermodynamic cycle.

US Patent:

46358587, Jan 13, 1987

Filed:

Jan 9, 1981

Appl. No.:

6/223833

Inventors:

Phillip W. Welch - Houston TX
Lawrence R. Roberts - Acton MA

Assignee:

W. R. Grace & Co. - Cambridge MA

International Classification:

B02C 2500

US Classification:

241 16

Abstract:

An electric motor operated rotary drum type grinding mill is operated at optimal efficiency by detecting and analyzing the motor current. The power signals are converted by signal processing equipment for presentation as pictorial display representations of mill operating conditions at a variety of motor current levels to permit unskilled operators to understand the current operating conditions. Instantaneous on line current signals are derived from the mill by a transformer coupling without rewiring or modification. Analytical equipment processes the detected current signals for mill control, storage of historical performance and pictorial display. Mill operation is accordingly controlled in semi-automatic or fully automatic modes that maintain optimum mill efficiency.