Resumes
Resumes
Ronald Marmol Phones & Addresses
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417 E River Bend Dr, Eatonton, GA 31024 (757) 268-1532
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Port St Lucie, FL
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106 Beatties Landing Rd, Yorktown, VA 23692 (757) 875-1126
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1058 Woodbine Way, San Jose, CA 95117 (408) 246-5851
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West Palm Beach, FL
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Saratoga, CA
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Madison, AL
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Hampton, VA
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Port St Lucie, FL
Publications
Us Patents
Support For Oil Film Dampers
View pageUS Patent:
49814150, Jan 1, 1991
Filed:
Aug 16, 1989
Appl. No.:
7/394704
Inventors:
Ronald A. Marmol - Palm Beach Gardens FL
Walter E. Wojcicki - Nashville TN
Walter E. Wojcicki - Nashville TN
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F01D 1100
F16C 2700
F16C 2700
US Classification:
4151742
Abstract:
A relatively less complex segmented spring mounted under the bearing and damper or the same configuration segmented spring mounted on either side of the bearing and damper serves to center the shaft of a rotor of a gas turbine engine and is characterized as being simple, occupying minimum space, but being capable of maintaining an adequate fatigue stress margin.
Active Hydraulic Rotor Damping
View pageUS Patent:
58392688, Nov 24, 1998
Filed:
May 4, 1995
Appl. No.:
8/434464
Inventors:
Robert J. Morris - Port Saint Lucie FL
Ronald Marmol - Madison AL
Paul E. McClure - Jupiter FL
Margaret Ann Owen - Juno Beach FL
Wesley B. Owen - Juno Beach FL
Carl F. Weiss - West Palm Beach FL
Ronald Marmol - Madison AL
Paul E. McClure - Jupiter FL
Margaret Ann Owen - Juno Beach FL
Wesley B. Owen - Juno Beach FL
Carl F. Weiss - West Palm Beach FL
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F02C 700
US Classification:
60 3902
Abstract:
The compressor shaft in a gas turbine engine is supported on a bearing having four independently hydraulically pressurized cells. The pressure in the cells is controlled by a signal processor based on engine operating parameters, including stall margin and blade tip to compressor case clearance.
Fluid Damper For Thrust Bearing
View pageUS Patent:
49520768, Aug 28, 1990
Filed:
Jul 21, 1989
Appl. No.:
7/383389
Inventors:
Walter H. Wiley - Palm Beach Gardens FL
Charles D. Aaron - Palm Beach Gardens FL
Russell L. Carlson - North Palm Beach FL
Charles L. Davis - Palm Beach Gardens FL
Ronald A. Marmol - Palm Beach Gardens FL
Charles D. Aaron - Palm Beach Gardens FL
Russell L. Carlson - North Palm Beach FL
Charles L. Davis - Palm Beach Gardens FL
Ronald A. Marmol - Palm Beach Gardens FL
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F16C 2700
US Classification:
384 99
Abstract:
A film squeeze damper for a thrust bearing includes a plurality of curved beam segments each having a fluid chamber adjacent the support housing and mounted end to end to surround the thrust bearing. Side mounted nibs transmit the thrust load from a radial dependent member of the outer race to the support housing through each segment. This permits unrestrained radial damping of vibratory energy occasioned by the unbalance in the supported shaft. A mechanical stop is provided by the design to limit radial deflection of the segment during a high rotor unbalance.
Bearing Support Structure Combining Fluid Damping And Spring Damping Apparatus
View pageUS Patent:
42136610, Jul 22, 1980
Filed:
May 8, 1978
Appl. No.:
5/904089
Inventors:
Ronald A. Marmol - Palm Beach Gardens FL
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F16C 2700
US Classification:
308184R
Abstract:
A bearing support structure capable of reliable operation in a rotary machine is disclosed. Various construction details which enable the damping of vibratory energy are discussed. Fluid damping and spring damping apparatus are combined in forming an effective structure for damping synchronous and non-synchronous vibratory energy. The system is built around a plurality of arcuate beams which effect spring damping, and which collaterally form chambers for the containment of a fluid damping medium.