Patents by Inventor Radu Oprea

Radu Oprea 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).

  • Patent number: 11810929
    Abstract: An innovative image acquisition device is disclosed, providing an effective solution for maximizing information density, while reducing color artifacts. The device of the invention relies on selective wavelength absorption, in certain substances. The novel solution utilizes two photosite arrays, or sensors, separated by an absorption layer, of predetermined thickness. Thus, an incident light beam strikes the two sensors in different proportions, exposing one array to the unaltered incident light, while the light striking the other array is partially absorbed. Light intensity ratio, between corresponding photosites on the two sensors uniquely identifies the incident light wavelength, and subsequently its color.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: November 7, 2023
    Inventor: Radu Oprea
  • Publication number: 20220068988
    Abstract: An innovative image acquisition device is disclosed, providing an effective solution for maximizing information density, while reducing color artifacts. The device of the invention relies on selective wavelength absorption, in certain substances. The novel solution utilizes two photosite arrays, or sensors, separated by an absorption layer, of predetermined thickness. Thus, an incident light beam strikes the two sensors in different proportions, exposing one array to the unaltered incident light, while the light striking the other array is partially absorbed. Light intensity ratio, between corresponding photosites on the two sensors uniquely identifies the incident light wavelength, and subsequently its color.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 3, 2022
    Inventor: Radu Oprea
  • Publication number: 20130318274
    Abstract: A scalable portable-computer system is disclosed. A novel portable-computer comprises a cluster connectivity bus, hard-wired to the central and graphics processing units (CPU and GPU, respectively) of said portable computer. An innovative portable-computer module comprises a top and a bottom interconnection port, preferably oriented in a plane perpendicular to the base surface of the computer. Different embodiments include a laptop computer, an extended laptop computer and a tablet computer. Several optional modules are also disclosed, including a memory-extension and a base module. Use of suitable adapters ensures that all modules have the same width, length and interconnectivity ports location. A plurality of portable computers and optional modules are interconnectedly stacked, thereby forming an on-demand supercomputing cluster, advantageously utilizing all available CPUs and GPUs. Each individual computer acts as a node in the cluster.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 28, 2013
    Inventor: Radu Oprea
  • Patent number: 8418663
    Abstract: A novel device for controlling the compression pressure of an internal combustion engine is disclosed. The combustion chamber of each cylinder of the engine is divided into two virtual spaces, a gas exchange space and a control space. The intake and exhaust valves move in a plane substantially perpendicular to the cylinder centerline and open into the gas exchange space. The position of a preferably toroidal volume control slider determines the control space volume and subsequently, the geometrical compression ratio of the engine. At least one actuation cam bidirectionally drives said control slider, by means of a slot and captive roller arrangement. The device further comprises actuator means to rotate the cam to a predetermined angular position, as a function of engine load. Thus, the device of the invention is capable of maintaining a constant compression pressure, under varying load, by altering the geometrical compression ratio of the engine.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: April 16, 2013
    Inventor: Radu Oprea
  • Patent number: 8204459
    Abstract: A radio device includes an amplifier and first and second independently operable variable voltage supply inputs to the amplifier, providing a consistent output power range for the radio device across widely varying temperature conditions.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: June 19, 2012
    Assignee: Cooper Technologies Company
    Inventors: Michelle Zuliani, Radu Oprea, Yosi Levi
  • Publication number: 20120073550
    Abstract: A novel flow control device for metering a preferably gaseous fuel to an internal combustion engine is disclosed. The innovative flow control device maintains a predetermined air-fuel ratio, while automatically compensating for variations in the energy content of the fuel. A rotary-flap airflow meter directly drives a preferably butterfly-type main valve, the latter metering a main fuel dose, calibrated to provide an air-fuel ratio slightly leaner than desired, over the entire engine operating domain. A rotary, or linear, trim valve meters a trim fuel dose, used to additively adjust the mixture to the desired quality. A drive member, rigidly joined to the rotary air flap, drives said trim valve, through a variable-ratio lever mechanism. The lever fulcrum is linearly moveable, independently of cam position, thereby altering the lever ratio and subsequently, the corrective fuel dose, over a substantially wide flow range.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 29, 2012
    Inventor: Radu Oprea
  • Publication number: 20110117866
    Abstract: A radio device includes an amplifier and first and second independently operable variable voltage supply inputs to the amplifier, providing a consistent output power range for the radio device across widely varying temperature conditions.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 19, 2011
    Inventors: Michelle Zuliani, Radu Oprea, Yosi Levi
  • Publication number: 20100242919
    Abstract: A novel device for controlling the compression pressure of an internal combustion engine is disclosed. The combustion chamber of each cylinder of the engine is divided into two virtual spaces, a gas exchange space and a control space. The intake and exhaust valves move in a plane substantially perpendicular to the cylinder centerline and open into the gas exchange space. The position of a preferably toroidal volume control slider determines the control space volume and subsequently, the geometrical compression ratio of the engine. At least one actuation cam bidirectionally drives said control slider, by means of a slot and captive roller arrangement. The device further comprises actuator means to rotate the cam to a predetermined angular position, as a function of engine load. Thus, the device of the invention is capable of maintaining a constant compression pressure, under varying load, by altering the geometrical compression ratio of the engine.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 30, 2010
    Inventor: Radu Oprea
  • Patent number: 6595182
    Abstract: An injection and ignition device is disclosed, for preparing, injecting and igniting a stratified air-fuel charge inside the cylinder of an internal combustion engine. The device comprises and injection valve, ignition means and a combustion shell surrounding the injection valve and ignition means. The combustion shell has a plurality of flame nozzles cut through its walls. The injection valve divides the total amount of fuel injected per cycle into a main dose and a pilot dose. The main dose is injected into the combustion chamber, forming a lean mixture therein. The smaller pilot dose is injected inside the combustion shell, forming a rich moisture therein. The ignition means easily ignite this rich mixture. As the fuel burs inside the combustion shell, the pressure therein will rise and the combustion flames will be ejected through the flame nozzles into the combustion chamber. Thus torch ignition of the lean mixture field occurs.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: July 22, 2003
    Inventors: Radu Oprea, Edward Rakosi
  • Patent number: 6588406
    Abstract: A dual-fuel system, comprising an electrically triggerable injector, for alternatively or simultaneously supplying two distinct fuels to an internal combustion engine. The injector is connected to two separate fuel circuits. Each circuit comprises a fuel storage tank and a fuel rail. External valves control fuel access from the fuel storage tanks to the fuel rails. By appropriately activating the valves, one or both of the two fuels are fed to the injector. Inside the injector are two separate fuel paths, fluidically isolated from each other. Each internal fuel path communicates with one of the external fuel circuits. The injector contains a flow control valve for each separate fuel path and one electromagnet. In the non-activated position, both valves are resiliently urged against a common seat. When the electromagnet is energized, it simultaneously drives the two valves to open off the seat, thereby permitting one or two fuels to pass therethrough.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: July 8, 2003
    Inventor: Radu Oprea
  • Publication number: 20020195088
    Abstract: A novel dual-fuel system for an internal combustion engine is disclosed, that utilizes a single electrically triggerable metering device, in the form of a fuel injector, to supply two distinct fuels to an internal combustion engine, either alternatively or simultaneously.
    Type: Application
    Filed: May 21, 2001
    Publication date: December 26, 2002
    Inventor: Radu Oprea
  • Publication number: 20010050069
    Abstract: A direct injection fuel system for internal combustion engines is disclosed, which relies on a novel device for preparing, injecting and igniting a stratified air-fuel charge inside the cylinder of an internal combustion engine.
    Type: Application
    Filed: June 4, 2001
    Publication date: December 13, 2001
    Inventors: Radu Oprea, Edward Rakosi