Resumes
Resumes
Fabio Bertolotti Phones & Addresses
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Hartford, CT
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15 Ivy Ln, South Windsor, CT 06074
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Yorktown, VA
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Columbus, OH
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Princeton, NJ
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Lynchburg, VA
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127 Tremont St, Hartford, CT 06105
Publications
Us Patents
Interlocking String Network For Sports Rackets
View pageUS Patent:
6506134, Jan 14, 2003
Filed:
Jul 13, 2001
Appl. No.:
09/905541
Inventors:
Fabio Paolo Bertolotti - South Windsor CT, 06074
International Classification:
A63B 5102
US Classification:
473543, 473521, 473522
Abstract:
The invention is an improved sports racket comprising streamlined transversal strings and streamlined longitudinal strings with surface indentations that permit the strings to lock into other at the string crossings so the strings do not move with respect to each other and also stay oriented so as to minimize wind resistance during the swinging motion of the sports racket before and after ball contact. The invention includes a spacer for assembly of the strings in the sports racket incorporating a flexible body between the string and the racket frame for the absorption and restitution of part of the balls kinetic energy during impact with the string to beneficially alter the feel of the strings.
Pressure Compensated Discharge Emitter
View pageUS Patent:
6513734, Feb 4, 2003
Filed:
Jan 8, 2001
Appl. No.:
09/756639
Inventors:
Giacomo Bertolotti - Lynchburg VA, 06074
Fabio P Bertolotti - South Windsor CT
Fabio P Bertolotti - South Windsor CT
Assignee:
Giacomo Bertolotti - Lynchburg VA
International Classification:
B05B 130
US Classification:
239542, 23953313
Abstract:
A a drip irrigation system comprises a hose with a flexible wall circumscribing and bounding a main flow-path for carrying irrigation fluid, and pressure-compensated emitters spaced along the length of the hose and providing a communicating channel between the main flow-path and a region at lower pressure outside the main flow-path, such as the region outside the hose, the pressure-compensating function of the emitters producing a flow-rate through the emitters that is weakly dependent on the pressure differential across the emitters. The pressure compensated emitters comprise one slit extending through the flexible wall, the slit interrupting the circumferential stresses in the flexible wall when the flow-path is pressurized, the stress interruption simultaneously causing a dilatation of the slit and an outwardly radial displacement in the single wall material adjacent to, and around the slit, and protrusions connected to the flexible wall and extending from the perimeter of the slit towards the main flow-path to form an outwardly diverging discharge channel with an inlet facing the inward fluid region, the outwardly diverging discharge channel connecting the inward fluid region to the slit, the protrusions narrowing the cross-sectional area of the inlet to increase the hydrodynamic resistance of the discharge channel in response to both the dilatation of the slit and to the outward displacement of the wall material adjacent to and around the slit.
High-Efficiency Turbulators For High-Stage Generator Of Absorption Chiller/Heater
View pageUS Patent:
7117686, Oct 10, 2006
Filed:
Dec 11, 2003
Appl. No.:
10/733753
Inventors:
Sunghan Jung - South Glastonbury CT, US
Jifeng Zhang - East Hartford CT, US
Timothy C. Wagner - East Hartford CT, US
Mark E. Marler - Glastonbury CT, US
Fabio P. Bertolotti - South Windsor CT, US
Michael K. Sahm - Avon CT, US
Jinsang Ryu - Gyunggi-do, KR
Jifeng Zhang - East Hartford CT, US
Timothy C. Wagner - East Hartford CT, US
Mark E. Marler - Glastonbury CT, US
Fabio P. Bertolotti - South Windsor CT, US
Michael K. Sahm - Avon CT, US
Jinsang Ryu - Gyunggi-do, KR
Assignee:
UTC Power, LLC - South Windsor CT
International Classification:
F25B 27/00
F28F 13/00
F28F 13/00
US Classification:
622384, 62497
Abstract:
Turbulators are disclosed for use in a high-stage generator for an exhaust-fired absorption chiller/heater. The turbulators are designed to minimize pressure drop across the turbulator, and thus minimize the efficiency loss to the exhaust source. One turbulator design has a number of flanges extending at a non-normal angle to a central web. Further, some of the flanges have cutout portions. The overall turbulator design is intended to minimize wake downstream of the turbulator blades, which could otherwise cause undesirable pressure drop. A second turbulator design incorporates flanges that extend at a normal angle relative to the central web, but wherein the flanges have a non-rectangular cross-sectional shape. Again, the goal of the turbulator designs here is to minimize wake, and potential pressure drop.
Perforated Skin Structure For Laminar-Flow Systems
View pageUS Patent:
7152829, Dec 26, 2006
Filed:
Apr 17, 2003
Appl. No.:
10/511930
Inventors:
Fabio P. Bertolotti - South Windsor CT, US
Assignee:
Airbus Deutschland GmbH - Hamburg
International Classification:
B64C 21/06
US Classification:
244209
Abstract:
The outer skin () of an aerodynamic body () has perforations () arranged in particular patterns in respective spanwise extending groups or bundles (). Each perforation is preferably a micro-slot with a length of 100 to 3000 μm and a width of 50 to 250 μm. Air is sucked through the micro-slots from the boundary layer flowing over the outer skin, to achieve boundary layer control. In each bundle, the pattern, size, orientation, and other parameters of the micro-slots are designed to achieve mutual destructive interference of flow disturbances arising due to the suction, to minimize the excitation of flow instabilities in the boundary layer. Particularly, the spatial spectrum of the perforation pattern of a given bundle is essentially absent of significant energy at predetermined wavelengths of predetermined flow instabilities that otherwise appear in the boundary layer air flow. The aerodynamic body further includes supporting ribs () extending parallel to the perforation bundles () and a perforated inner plate () providing a throttling control of the suction flow through groups of the bundles.
Rotor Hub Fairing System For A Counter-Rotating, Coaxial Rotor System
View pageUS Patent:
7229251, Jun 12, 2007
Filed:
May 31, 2005
Appl. No.:
11/141246
Inventors:
Fabio P. Bertolotti - South Windsor CT, US
Mark W. Scott - Bethany CT, US
Brian E. Wake - South Glastonbury CT, US
T. Alan Egolf - Glastonbury CT, US
Duane C. McCormick - Colchester CT, US
Mark W. Scott - Bethany CT, US
Brian E. Wake - South Glastonbury CT, US
T. Alan Egolf - Glastonbury CT, US
Duane C. McCormick - Colchester CT, US
Assignee:
Sikorsky Aircraft Corporation - Stratford CT
International Classification:
B64C 27/50
US Classification:
416 33, 416128, 416134 A, 416204 R
Abstract:
A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system is sized and configured to reduce the overall drag on a dual, counter-rotating, coaxial rotor system. Preferably, the rotor hub fairing is fully integrated. The shaft fairing preferably includes a minimal thickness at the midsection to reduce drag with an increasing thickness adjacent the upper and lower hub fairings to reduce the flow separation on the hub fairing surfaces without overly excessive drag. Other aerodynamic structures, such as a horizontal splitter and/or a plurality of turning vanes may be mounted to the shaft fairing to facilitate flow around the upper and lower hub fairings to reduce flow separation and drag.
High-Efficiency Turbulators For High-Stage Generator Of Absorption Chiller/Heater
View pageUS Patent:
7275393, Oct 2, 2007
Filed:
Aug 3, 2006
Appl. No.:
11/498886
Inventors:
Sunghan Jung - South Glastonbury CT, US
Jifeng Zhang - East Hartford CT, US
Timothy C. Wagner - East Hartford CT, US
Mark E. Marler - Glastonbury CT, US
Fabio P. Bertolotti - South Windsor CT, US
Michael K. Sahm - Avon CT, US
Jinsang Ryu - Gyunggi-do, KR
Jifeng Zhang - East Hartford CT, US
Timothy C. Wagner - East Hartford CT, US
Mark E. Marler - Glastonbury CT, US
Fabio P. Bertolotti - South Windsor CT, US
Michael K. Sahm - Avon CT, US
Jinsang Ryu - Gyunggi-do, KR
Assignee:
UTC Power, LLC - South Windsor CT
International Classification:
F25B 33/00
US Classification:
62497, 622384, 62476
Abstract:
Turbulators are disclosed for use in a high-stage generator for an exhaust-fired absorption chiller/heater. The turbulators are designed to minimize pressure drop across the turbulator, and thus minimize the efficiency loss to the exhaust source. One turbulator design has a number of flanges extending at a non-normal angle to a central web. Further, some of the flanges have cutout portions. The overall turbulator design is intended to minimize wake downstream of the turbulator blades, which could otherwise cause undesirable pressure drop. A second turbulator design incorporates flanges that extend at a normal angle relative to the central web, but wherein the flanges have a non-rectangular cross-sectional shape. Again, the goal of the turbulator designs here is to minimize wake, and potential pressure drop.
Arrangement For Controlling Fluid Jets Injected Into A Fluid Stream
View pageUS Patent:
7415827, Aug 26, 2008
Filed:
May 18, 2005
Appl. No.:
11/131976
Inventors:
Fabio P. Bertolotti - South Windsor CT, US
David S. Liscinsky - Glastonbury CT, US
Daniel R. Sabatino - East Hampton CT, US
David S. Liscinsky - Glastonbury CT, US
Daniel R. Sabatino - East Hampton CT, US
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F23R 3/06
US Classification:
60752, 239433, 239568, 239598
Abstract:
In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening. Pairs of openings and associated collars maybe placed in symmetric relationship so as to promote mixing in particular applications, and nozzles maybe placed on the inner side of wall to enhance the flow characteristics of the primary fluid.
Wind-Turbine With Load-Carrying Skin
View pageUS Patent:
7528497, May 5, 2009
Filed:
Jul 11, 2006
Appl. No.:
11/484503
Inventors:
Fabio Paolo Bertolotti - South Windsor CT, US
Assignee:
Hamilton Sundstrand Corporation - Windsor Locks CT
International Classification:
F03D 9/00
H02P 9/04
H02P 9/04
US Classification:
290 55, 290 44
Abstract:
A horizontal axis wind-turbine includes a stationary support structure, a two-bladed rotor supported by the stationary support structure, and a hollow shaft rotationally attached to the stationary support structure through a bearing. Teeter hinges are spaced apart from each other and connect the hollow shaft to a rotor-hub to allow a teetering action of the rotor-hub with respect to the hollow shaft. The hollow shaft structurally supports the two-bladed rotor with respect to the stationary support structure, with a maximum outer diameter of the hollow shaft being greater than an outer diameter of the bearing.