Patents by Inventor Mohammed A. Hashish
Mohammed A. Hashish has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6804459Abstract: An assembly for changing the temperature of ultrahigh-pressure fluid as it flows through ultrahigh-pressure tubing includes several thermally conductive blocks. Each block has a first bore through which the ultrahigh-pressure tubing passes, and a second bore containing a source of heating or cooling. Alternatively, resistance heating is used to increase the temperature of the ultrahigh-pressure fluid, by coupling electrodes to the outer surface of the tubing. The ultrahigh-pressure fluid is heated or cooled after it is pressurized, and is then discharged from the ultrahigh-pressure tubing at a selected temperature for use. For example, the ultrahigh-pressure fluid at a selected temperature may be discharged through a nozzle to form an ultrahigh-pressure fluid jet to cut or clean any desired surface or object, or it may be discharged to a pressure vessel to pressure treat a substance.Type: GrantFiled: June 15, 2001Date of Patent: October 12, 2004Assignee: Flow International CorporationInventors: Chidambaram Raghavan, Edmund Y. Ting, Bruce M. Schuman, Mohamed A. Hashish
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Patent number: 6755725Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.Type: GrantFiled: July 31, 2001Date of Patent: June 29, 2004Assignee: Flow International CorporationInventors: Mohamed A. Hashish, Steven J. Craigen, Felice M. Sciulli, Yasuo Baba
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Patent number: 6752686Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.Type: GrantFiled: July 31, 2001Date of Patent: June 22, 2004Assignee: Flow International CorporationInventors: Mohamed A. Hashish, Steven J. Craigen, Felice M. Sciulli, Yasuo Baba
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Publication number: 20040107810Abstract: An improved apparatus for generating a high-pressure fluid jet includes an orifice mount having a frusto-conical surface that engages a frusto-conical wall in a cutting head, the geometry of the orifice mount and cutting head being selected to increase the stability of the mount and reduce deflection of the mount adjacent a jewel orifice, when subjected to pressure. Alignment of a nozzle body and the cutting head is improved by providing pilot diameters both upstream and downstream of threads on the nozzle body and bore of the cutting head, respectively. Accurate placement of a mixing tube in a cutting head is achieved by rigidly fixing a collar to an outer surface of the mixing tube, the collar engaging a shoulder and bore of the cutting head downstream of a mixing chamber, to precisely locate the mixing chamber axially and radially.Type: ApplicationFiled: November 20, 2003Publication date: June 10, 2004Applicant: Flow International CorporationInventors: Felix M. Sciulli, Mohamed A. Hashish, Steven J. Craigen, Bruce M. Schuman
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Publication number: 20030037654Abstract: An improved apparatus for generating a high-pressure fluid jet includes an orifice mount having a frusto-conical surface that engages a frusto-conical wall in a cutting head, the geometry of the orifice mount and cutting head being selected to increase the stability of the mount and reduce deflection of the mount adjacent a jewel orifice, when subjected to pressure. Alignment of a nozzle body and the cutting head is improved by providing pilot diameters both upstream and downstream of threads on the nozzle body and bore of the cutting head, respectively. Accurate placement of a mixing tube in a cutting head is achieved by rigidly fixing a collar to an outer surface of the mixing tube, the collar engaging a shoulder and bore of the cutting head downstream of a mixing chamber, to precisely locate the mixing chamber axially and radially.Type: ApplicationFiled: April 1, 2002Publication date: February 27, 2003Inventors: Felix M. Sciulli, Mohamed A. Hashish, Steven J. Craigen, Bruce M. Schuman, Chidambaram Raghavan, Andreas Meyer, Wayne Johnson
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Publication number: 20030037650Abstract: An apparatus for generating and manipulating a high-pressure fluid jet includes an end effector assembly coupled to a manipulator that imparts motion to the end effector along one or more axes. The end effector assembly includes a cutting head coupled to a source of high-pressure fluid and to a source of abrasive, to generate a high-pressure abrasive fluid jet. A motion assembly is coupled to the cutting head via a clamp positioned around the cutting head. A nozzle body assembly is removably coupled to the cutting head assembly upstream of the orifice. The nozzle body assembly may be separated from the cutting head assembly to allow access to the orifice, without removing the cutting head assembly from the clamp. The clamp has a quick release mechanism, allowing an operator to open the clamp by hand to allow access to the cutting head, and an alignment member is provided on an inner surface of the clamp to accurately locate the cutting head in the clamp.Type: ApplicationFiled: August 27, 2001Publication date: February 27, 2003Applicant: Flow International CorporationInventors: Michael Knaupp, Charles D. Burnham, Mohamed A. Hashish, Robert J. Mann, Mira K. Sahney, C. David Bader, Andreas Meyer, Sean A. Vaughan, Thomas A. Pesek, Jonathan M. Stewart
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Publication number: 20030029934Abstract: A high-pressure fluidjet nozzle is formed from a plurality of segments joined together, for example, by a metal sleeve. Axial bores provided in the segments align to form an axial bore extending through the nozzle. The number, material, and outer and inner dimensions of the segments can be varied to provide a nozzle with desired performance characteristics. Spaces can be provided between the segments to form chambers with auxiliary ports connected to the chambers to allow monitoring and modulation of the jet.Type: ApplicationFiled: July 31, 2001Publication date: February 13, 2003Applicant: Flow International CorporationInventors: Mohamed A. Hashish, Steven J. Craigen
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Publication number: 20020191970Abstract: An assembly for changing the temperature of ultrahigh-pressure fluid as it flows through ultrahigh-pressure tubing includes several thermally conductive blocks. Each block has a first bore through which the ultrahigh-pressure tubing passes, and a second bore containing a source of heating or cooling. Alternatively, resistance heating is used to increase the temperature of the ultrahigh-pressure fluid, by coupling electrodes to the outer surface of the tubing. The ultrahigh-pressure fluid is heated or cooled after it is pressurized, and is then discharged from the ultrahigh-pressure tubing at a selected temperature for use. For example, the ultrahigh-pressure fluid at a selected temperature may be discharged through a nozzle to form an ultrahigh-pressure fluid jet to cut or clean any desired surface or object, or it may be discharged to a pressure vessel to pressure treat a substance.Type: ApplicationFiled: June 15, 2001Publication date: December 19, 2002Applicant: Flow International CorporationInventors: Chidambaram Raghavan, Edmund Y. Ting, Bruce M. Schuman, Mohamed A. Hashish
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Patent number: 6464567Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.Type: GrantFiled: July 31, 2001Date of Patent: October 15, 2002Assignee: Flow International CorporationInventors: Mohamed A. Hashish, Steven J. Craigen, Felice M. Sciulli, Yasuo Baba
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Publication number: 20020034924Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.Type: ApplicationFiled: July 31, 2001Publication date: March 21, 2002Inventors: Mohamed A. Hashish, Steven J. Craigen, Felice M. Sciulli, Yasuo Baba
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Publication number: 20020011579Abstract: An apparatus and method for pressure processing a pumpable substance, such as a pumpable food product or slurry. In one embodiment, the apparatus includes a pressure vessel having an inlet valve toward one end and outlet valve toward the other end. A flexible bladder is coupled between the inlet and outlet valves for receiving the pumpable substance. The pressure vessel can further include a high-pressure inlet port for receiving high-pressure fluid that biases the membrane inwardly to pressure process the pumpable substance. The pumpable substance is then removed from the vessel through the outlet valve.Type: ApplicationFiled: September 25, 2001Publication date: January 31, 2002Inventors: Mohamed A. Hashish, Chidambaram Raghavan, Olivier L. Tremoulet, Bruce M. Schuman
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Publication number: 20020009369Abstract: An apparatus and method for pressure processing a pumpable substance, such as a pumpable food product or slurry. In one embodiment, the apparatus includes a pressure vessel having an inlet valve toward one end and outlet valve toward the other end. A flexible bladder is coupled between the inlet and outlet valves for receiving the pumpable substance. The pressure vessel can further include a high-pressure inlet port for receiving high-pressure fluid that biases the membrane inwardly to pressure process the pumpable substance. The pumpable substance is then removed from the vessel through the outlet valve.Type: ApplicationFiled: September 25, 2001Publication date: January 24, 2002Inventors: Mohamed A. Hashish, Chidambaram Raghavan, Olivier L. Tremoulet, Bruce M. Schuman
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Publication number: 20010046833Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.Type: ApplicationFiled: July 31, 2001Publication date: November 29, 2001Inventors: Mohamed A. Hashish, Steven J. Craigen, Felice M. Sciulli, Yasuo Baba
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Publication number: 20010041206Abstract: An apparatus and method for pressure processing a pumpable substance, such as a pumpable food product. In one embodiment, the apparatus includes a plurality of coupled pressure vessels, each having an inlet port to receive the pumpable substance, an outlet port to remove the pumpable substance, an isolator to pressurize the pumpable substance and a high-pressure port for receiving pressurizing fluid to bias the isolator toward the pumpable substance. The apparatus can further include blocking valves to limit the travel of materials that may leak through the inlet and outlet valves, a heat exchanger to heat and/or cool the pumpable substance, and/or a gas controller to add gas to the pumpable substance or remove gas from the pumpable substance. Cleaning, rinsing, and/or sanitizing fluid can be pumped through the entire system, including through the isolator to cleanse and/or sanitize.Type: ApplicationFiled: July 17, 2001Publication date: November 15, 2001Inventors: Chidambaram Raghavan, Olivier L. Tremoulet, Mohamed A. Hashish, Edmund Ting
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Patent number: 6305913Abstract: An apparatus and method for pressure processing a pumpable substance, such as a pumpable food product or slurry. In one embodiment, the apparatus includes a pressure vessel having an inlet valve toward one end and outlet valve toward the other end. A flexible bladder is coupled between the inlet and outlet valves for receiving the pumpable substance. The pressure vessel can further include a high-pressure inlet port for receiving high-pressure fluid that biases the membrane inwardly to pressure process the pumpable substance. The pumpable substance is then removed from the vessel through the outlet valve.Type: GrantFiled: August 13, 1999Date of Patent: October 23, 2001Assignee: Flow International CorporationInventors: Mohamed A. Hashish, Chidambaram Raghavan, Olivier L. Tremoulet, Jr., Bruce M. Schuman
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Patent number: 6280302Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.Type: GrantFiled: March 24, 1999Date of Patent: August 28, 2001Assignee: Flow International CorporationInventors: Mohamed A. Hashish, Steven J. Craigen, Felice M. Sciulli, Yasuo Baba
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Patent number: 5144766Abstract: A high pressure liquid jet abrasive cutting apparatus having a removable and replaceable cartridge assembly. This cartridge assembly has a nozzle unit with a jewel orifice, an intermediate mixing chamber where the liquid jet and the abrasive particles mix, and a discharge tube through which the liquid jet incorporating abrasive particles therein is discharged. The nozzle unit and the discharge tube are preassembled in a cartridge housing at a factory location under controlled conditions, so that precise alignment is obtained. Replacement of the worn parts is accomplished by interchange of the cartridge assembly.Type: GrantFiled: February 26, 1992Date of Patent: September 8, 1992Assignee: Flow International CorporationInventors: Mohamed A. Hashish, John H. Olsen, Katherine J. Zarin, Glenn A. Erichsen
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Patent number: 5092085Abstract: A high pressure liquid jet abrasive cutting apparatus having a removable and replaceable cartridge assembly. This cartridge assembly has a nozzle unit with a jewel orifice, an intermediate mixing chamber where the liquid jet and the abrasive particles mix, and a discharge tube through which the liquid jet incorporating abrasive particles therein is discharged. The nozzle unit and the discharge tube are preassembled in a cartridge housing at a factory location under controlled conditions, so that precise alignment is obtained. Replacement of the worn parts is accomplished by interchange of the cartridge assembly.Type: GrantFiled: November 3, 1989Date of Patent: March 3, 1992Assignee: Flow International CorporationInventors: Mohamed A. Hashish, John H. Olsen, Katherine J. Zaring, Glenn A. Erichsen
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Patent number: D470566Type: GrantFiled: April 1, 2002Date of Patent: February 18, 2003Assignee: Flow International CorporationInventors: Felix M. Sciulli, Mohamed A. Hashish, Steven J. Craigen, Bruce M. Schuman
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Patent number: D480783Type: GrantFiled: April 1, 2002Date of Patent: October 14, 2003Assignee: Flow International CorporationInventors: Felix M. Sciulli, Mohamed A. Hashish, Steven J. Craigen, Bruce M. Schuman