Patents by Inventor Peter W. Smith
Peter W. Smith 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: 11988144Abstract: A method of operating a gas turbine engine including an engine core including a turbine, compressor, combustor to combust a fuel, and core shaft connecting the turbine and compressor; a fan upstream of the engine core; a fan shaft; a gearbox that receives an input from the core shaft and outputs drive to the fan via the fan shaft; a primary oil loop system to supply oil to the gearbox; and a heat exchange system. The method includes controlling the heat exchange system to adjust fuel viscosity to be lower than or equal to 0.58 mm2/s on entry to the combustor at cruise conditions.Type: GrantFiled: June 20, 2023Date of Patent: May 21, 2024Assignee: ROLLS-ROYCE plcInventors: Craig W Bemment, Alastair G Hobday, Benjamin J Keeler, Christopher P Madden, Andrea Minelli, Andrew T Smith, Peter Swann, Martin K Yates
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Publication number: 20240122479Abstract: An imaging device includes a hollow flexible shaft having a central longitudinal axis and an imaging window therein. An optical fiber extends within the hollow flexible shaft substantially along the central axis. A distal tip of the optical fiber is attached to the hollow flexible shaft and aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window. A handle is attached to the hollow flexible shaft configured rotate the hollow flexible shaft at speeds of greater than 1,000 rpm.Type: ApplicationFiled: December 21, 2023Publication date: April 18, 2024Inventors: Peter H. SMITH, Manish KANKARIA, Priyanshu GUPTA, Nicholas J. SPINELLI, Charles W. MCNALL
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Publication number: 20240125232Abstract: A cutter head includes a first member, a cutting bit, and a second member. The first member includes a first end and a second end and includes a first mass. The cutting bit is coupled to the first member proximate the second end. The cutting bit includes a cutting edge rotatable about the axis. The second member is rotatable about the axis and includes a second mass eccentrically positioned with respect to the axis. Rotation of the second mass causes the first member and the cutting bit to oscillate.Type: ApplicationFiled: July 10, 2023Publication date: April 18, 2024Inventors: Russell P. Smith, Andrew D. Hunter, Peter A. Lugg, Ian B. Schirmer, Geoffrey W. Keech, Christopher Coates, Bradley M. Neilson
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Publication number: 20240094233Abstract: The present invention relates to methods, devices and systems for associating consumable data with an assay consumable used in a biological assay. Provided are assay systems and associated consumables, wherein the assay system adjusts one or more steps of an assay protocol based on consumable data specific for that consumable. Various types of consumable data are described, as well as methods of using such data in the conduct of an assay by an assay system. The present invention also relates to consumables (e.g., kits and reagent containers), software, data deployable bundles, computer-readable media, loading carts, instruments, systems, and methods, for performing automated biological assays.Type: ApplicationFiled: July 18, 2023Publication date: March 21, 2024Inventors: Jacob N. WOHLSTADTER, Manish KOCHAR, Peter J. BOSCO, Ian D. CHAMBERLIN, Bandele JEFFREY-COKER, Eric M. JONES, Gary I. KRIVOY, Don E. KRUEGER, Aaron H. LEIMKUEHLER, Pei-Ming WU, Kim-Xuan NGUYEN, Pankaj OBEROI, Louis W. PANG, Jennifer PARKER, Victor PELLICIER, Nicholas SAMMONS, George SIGAL, Michael L. VOCK, Stanley T. SMITH, Carl C. STEVENS, Rodger D. OSBORNE, Kenneth E. PAGE, Michael T. WADE, Jon WILLOUGHBY, Lei WANG, Xinri CONG, Kin NG
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Publication number: 20240093476Abstract: A toilet assembly includes a flush engine having a bowl defining a sump and a trapway extending from the sump. A bowl insert is configured to be located in the bowl and a shroud is configured to be positioned over the flush engine to conceal at least a portion of the flush engine.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Inventors: Billy Jack Ahola, Andrew L. Smith, Mark E. Baumgartner, Donald G. Bogenschuetz, Tobin J. Vetting, Lawrence E. Duwell, Peter W. Swart
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Publication number: 20240071593Abstract: Systems and methods are disclosed that provide smart alerts to users, e.g., alerts to users about diabetic states that are only provided when it makes sense to do so, e.g., when the system can predict or estimate that the user is not already cognitively aware of their current condition, e.g., particularly where the current condition is a diabetic state warranting attention. In this way, the alert or alarm is personalized and made particularly effective for that user. Such systems and methods still alert the user when action is necessary, e.g., a bolus or temporary basal rate change, or provide a response to a missed bolus or a need for correction, but do not alert when action is unnecessary, e.g., if the user is already estimated or predicted to be cognitively aware of the diabetic state warranting attention, or if corrective action was already taken.Type: ApplicationFiled: October 24, 2023Publication date: February 29, 2024Inventors: Anna Leigh DAVIS, Scott M. BELLIVEAU, Naresh C. BHAVARAJU, Leif N. BOWMAN, Rita M. CASTILLO, Alexandra Elena CONSTANTIN, Rian W. DRAEGER, Laura J. DUNN, Gary Brian GABLE, Arturo GARCIA, Thomas HALL, Hari HAMPAPURAM, Christopher Robert HANNEMANN, Anna Claire HARLEY-TROCHIMCZYK, Nathaniel David HEINTZMAN, Andrea Jean JACKSON, Lauren Hruby JEPSON, Apurv Ullas KAMATH, Katherine Yerre KOEHLER, Aditya Sagar MANDAPAKA, Samuel Jere MARSH, Gary A. MORRIS, Subrai Girish PAI, Andrew Attila PAL, Nicholas POLYTARIDIS, Philip Thomas PUPA, Eli REIHMAN, Ashley Anne RINDFLEISCH, Sofie Wells SCHUNK, Peter C. SIMPSON, Daniel S. SMITH, Stephen J. VANSLYKE, Matthew T. VOGEL, Tomas C. WALKER, Benjamin Elrod WEST, Atiim Joseph WILEY
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Patent number: 6810527Abstract: An end-to-end global distribution system that can produce and deliver live content as well as pre-recorded content and other content, to commercial passenger aircraft via a satellite and ground-based infrastructure. The content can include live television, pre-recorded content, advertisements as well as other content such as software applications, internet material, etc. The delivered content can be tailored based on distribution criteria such as airline, aircraft, origin and destination, flight number, cabin class, and others. Such system can be advertiser-supported and include targeted and distribution specific advertisements. Furthermore, access to the content can be controlled by various conditional access parameters at the server level, to various aircraft zones, and at the passenger level.Type: GrantFiled: September 27, 1999Date of Patent: October 26, 2004Assignee: News America, Inc.Inventors: Adam P. Conrad, John L. Norin, RĂ´mulo Pontual, Peter W. Smith, Jeffrey M. Wales
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Patent number: 6792881Abstract: A method according to the present invention for reducing the creation of dioxins during the burning of a biomass containing a contaminant, wherein the contaminant is solvated or neutralized in the presence of a corresponding solvent, includes the steps of prior to the burning or reacting (herein collectively referred to as burning) of the biomass, conveying the biomass and the solvent into a biomass washing means, washing the biomass in the solvent in the washing means, and once at least a portion of the contaminant has been washed from the biomass, conveying the biomass from the washing means and into a biomass burner, and conveying the solvent from the washing means.Type: GrantFiled: June 26, 2003Date of Patent: September 21, 2004Inventor: Peter W. Smith
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Publication number: 20040002028Abstract: A method according to the present invention for reducing the creation of dioxins during the burning of a biomass containing a contaminant, wherein the contaminant is solvated or neutralized in the presence of a corresponding solvent, includes the steps of prior to the burning or reacting (herein collectively referred to as burning) of the biomass, conveying the biomass and the solvent into a biomass washing means, washing the biomass in the solvent in the washing means, and once at least a portion of the contaminant has been washed from the biomass, conveying the biomass from the washing means and into a biomass burner, and conveying the solvent from the washing means.Type: ApplicationFiled: June 26, 2003Publication date: January 1, 2004Inventor: Peter W. Smith
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Patent number: 4860296Abstract: The invention is a controlled laser having an optical resonator, a laser gain medium placed inside the optical resonator, the laser gain medium being capable of emitting light and of lasing with the light, a multiple layer heterostructure placed inside the optical resonator, and means for varying an optical absorption of the multiple layer heterostructure for the light in order to control an optical gain of the optical resonator, and thereby control lasing of the laser gain medium. Passive mode locking is achieved by the light emitted by the gain medium controlling the optical absorption of the multiple layer heterostructure. Active mode locking and modulation are achieved by controlling the optical absorption of the multiple layer heterostructure by applying an electric field to the multiple layer heterostructure.Type: GrantFiled: May 14, 1987Date of Patent: August 22, 1989Assignee: American Telephone and Telegraph Company, AT&T Bell LaboratoriesInventors: Daniel S. Chemla, David A. B. Miller, Peter W. Smith
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Patent number: 4856860Abstract: Two-dimensional all-optical devices include a planar single-mode waveguide formed on or in a major surface of a supporting substrate. The waveguide comprises a nonlinear medium having an intensity-dependent index of refraction. For input optical signals above a critical intensity, self-focusing occurs in the waveguide. Microminiature high-speed bistable and switching devices based on this phenomenon and compatible with integrated-optics technology are thereby provided.Type: GrantFiled: May 26, 1988Date of Patent: August 15, 1989Assignee: Bell Communications Research, Inc.Inventors: Yaron Silberberg, Peter W. Smith
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Patent number: 4597638Abstract: A nonlinear optical apparatus is provided with a multiple layer heterostructure made from alternate layers of a charge carrier semiconductor material having a narrow bandgap energy, and a charge barrier material having a wider bandgap energy than the charge carrier material. The layers are deposited one upon the other in substantially flat planes forming a series of potential barriers. The potential barriers are capable of confining charge carriers which arise within the layers of the charge carrier semiconductor material to remain substantially therein. The optical absorption coefficient of the multiple layer heterostructure exhibits at least one sharp resonant optical absorption peak near the semiconductor material bandgap absorption. A light source is restricted to provide a beam of light photons of energy near the energy of the sharp resonant optical absorption peak for promoting production of charge carriers within the charge carrier semiconductor material.Type: GrantFiled: December 30, 1983Date of Patent: July 1, 1986Assignee: AT&T Bell LaboratoriesInventors: Daniel S. Chemla, David A. B. Miller, Peter W. Smith
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Patent number: 4551692Abstract: A dielectric substrate machined into a monolithic polarizer grating including structural support and matching regions, effective for transforming linearly to circularly polarized states of microwave radiation.Type: GrantFiled: March 28, 1984Date of Patent: November 5, 1985Assignee: United Technologies CorporationInventor: Peter W. Smith
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Patent number: 4528464Abstract: A four-wave mixer which uses a multiple quantum well structure as a nonlinear optical material is provided. There are provided means for providing a first beam of light which propagates through said multiple quantum well structure, and means for providing a second beam of light which also propagates through said multiple quantum well structure and substantially overlaps said first beam of light within said MQW structure. At least one ouput phase conjugate beam of light is produced by interaction of said first and said second beams of light with said multiple quantum well structure. An alternate embodiment has two counterpropagating pump beams and a probe beam of light which produce a backward scattered phase conjugate beam of light.Type: GrantFiled: February 28, 1983Date of Patent: July 9, 1985Assignee: AT&T Bell LaboratoriesInventors: Daniel S. Chemla, David A. B. Miller, Peter W. Smith
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Patent number: 4515429Abstract: Several types of nonlinear characteristics are provided in an optical device wherein at least two optical materials are constructed to provide a waveguide structure. At least one of the materials has a dominant nonlinear characteristic over the length of the waveguide that is commonly referred to as the Kerr effect. The index of refraction in this material is a function of the light intensity in the waveguide. By selecting materials that provide either positive or negative Kerr coefficients, and by constructing the device with the nonlinear material either as the core or as the cladding layer, power output versus input characteristics that exhibit both limiting and amplification can be provided. A bistable characteristic is provided in one of the embodiments by terminating the waveguide structure with a mirror. Specific embodiments using carbon disulfide and polydiacetylene as the nonlinear materials are disclosed.Type: GrantFiled: May 27, 1980Date of Patent: May 7, 1985Assignee: AT&T Bell LaboratoriesInventors: Peter W. Smith, Walter J. Tomlinson, III
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Patent number: 4507776Abstract: The present invention relates to a nonlinear optical time-division multiplexer and demultiplexer formed from a cascaded plurality of triggerable optical switching elements. In accordance with the present invention, an exemplary triggerable optical switching element comprises a nonlinear optical material disposed in, for example, a ring resonator arrangement. The nonlinear optical material exhibits an index of refraction which is a function of the intensity of the light passing therethrough. An exemplary switching element is responsive to two separate optical pulse streams, where neither pulse stream comprises a sufficient intensity to cause the element to switch. A trigger pulse is utilized which comprises a sufficient intensity to stimulate switching the output from a first optical pulse stream to a second optical pulse stream.Type: GrantFiled: September 12, 1983Date of Patent: March 26, 1985Assignee: AT&T Bell LaboratoriesInventor: Peter W. Smith
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Patent number: 4455643Abstract: The present invention relates to a high speed optical switch and the use of such switches to form a time division demultiplexer. The optical switch comprises a length of linear material (12) including an outer surface on a portion of which is formed a layer of nonlinear material (11) to form a nonlinear interface (10) at the boundary of the two materials. An input data light beam (14) is propagated in the linear material with a predetermined intensity and angle of incidence on the nonlinear interface to, by itself, cause total reflection of the input beam. A control light beam (11) is also selectively energized and directed at the nonlinear interface with an intensity and angle of incidence to cause a portion of the input data beam to be formed into a self-focused channel or beam propagating in the nonlinear material. The self-focused beam can then be detected at an edge of the nonlinear material.Type: GrantFiled: April 2, 1982Date of Patent: June 19, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: Peter W. Smith, Walter J. Tomlinson, III
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Patent number: 4453805Abstract: The invention provides apparatus comprising at least two beams of coherent radiation directed so as to intersect and form a standing wave pattern having a period .LAMBDA. in an optically responsive medium. The optically responsive medium is a colloidal suspension of dielectric particles in a liquid medium, the dielectric particles and liquid having different indices of refraction, and the diameter of the particles being less than or approximately equal to the period .LAMBDA.. The dielectric particles are arranged into a grating by the electric fields carried by the beams of coherent radiation. In an embodiment of the invention, the dielectric particles are small dielectric spheres. The dielectric particles and the liquid may have approximately equal mass densities. A third beam of light may generate an output beam of light by degenerate four-wave mixing processes incorporating a dielectric grating made by the electric fields carried by the beams of coherent radiation.Type: GrantFiled: February 19, 1981Date of Patent: June 12, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: Arthur Ashkin, Peter W. Smith, Walter J. Tomlinson, III
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Patent number: 4410239Abstract: Many prior art bistable optical devices require resonant optical cavities and are therefore limited in their operation due to the long lifetimes associated with their high-finesse cavities. A bistable optical device that does not use a resonant cavity is disclosed wherein a nonlinear medium whose index of refraction increases with increased light intensity is arranged to have input and output faces into which and out of which a laser beam having a nonuniform spatial profile can be propagated. A mirror having a predetermined area of reflectivity is positioned with respect to the output face of a nonlinear medium so as to reflect only the light energy that propagates in an area at the output face that is approximately equal to the area which the beam presents at this face when the beam is propagating at a critical power level, that is, when the beam is self-trapped.Type: GrantFiled: April 17, 1981Date of Patent: October 18, 1983Assignee: Bell Telephone Laboratories, IncorporatedInventors: Alexander E. Kaplan, John E. Bjorkholm, Peter W. Smith, Walter J. Tomlinson, III
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Patent number: 4376281Abstract: An array antenna having a plurality of radiating elements positioned in a planar configuration is divided into four separate quadrants. The array antenna is capable of being switched between two modes, a narrow pencil beam mode and a cosec.sup.2 .theta.cos.theta. mode, through the use of a single switch and a pair of phase shifters. In the pencil beam mode, the transmitted energy is symmetrically divided between the four quadrants of the antenna. By changing the switch to its second position the power is diverted to only the upper half of the antenna and a pair of phase shifters introduces a phase shift to the radiating elements along the lower half of the upper portion of the antenna. This causes an asymmetric radiation pattern from the antenna creating the cosec.sup.2 .theta.cos.theta. beam which is well suited for ground mapping.Type: GrantFiled: December 23, 1980Date of Patent: March 8, 1983Assignee: United Technologies CorporationInventor: Peter W. Smith