Urquidi
Carlos A. Urquidi, Chihuahua MX
Patent application number | Description | Published |
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20100132431 | METHOD FOR TESTING AND CALIBRATING A CAPACITIVE FLEX FUEL SENSOR - A method for calibrating a flex fuel sensing apparatus having a fuel passage involves the use of a generally solid test blank having a size and shape configured to match that of the fuel passage. The test blank comprises material having a known, predetermined dielectric constant. The test blank is inserted into the fuel passage where the dielectric constant of the test blank is operative to simulate the presence of various gasoline and ethanol fuel blends. The test blank may also comprise a deformable/compressible solid such as rubber where the test blank is compressed during calibration to eliminate air gaps or the like, improving accuracy. The use of the solid test blank reduces complexity compared to using actual gasoline/ethanol blends for calibration as well as reduces post-calibration cleanup. | 06-03-2010 |
Carlos A. Urquidi, Cd. Juarez MX
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20090206846 | Capacitor-based position sensor for vehicle - A position sensor has an external moving element couplable to a moving part whose angular or linear position is sought to be sensed. A sealed enclosure is engaged with the moving element such that the moving element moves relative to the enclosure, and capacitive elements are in the enclosure. An internal moving element inside the enclosure is magnetically coupled to the external moving element for movement with the external element, with the internal moving element moving between the capacitive elements thereby change the capacitance between the capacitive elements as the external moving element moves. | 08-20-2009 |
20100004879 | Fluid level measuring system - A total capacitance is measured between an inner electrode disposed in a dielectric sleeve and an outer electrode surrounding the sleeve, with a fluid chamber being established between the sleeve and outer electrode. The total capacitance is correlated to a level (l) of fluid in the chamber using an electrode length, a unit length capacitance associated with the sleeve, and a unit length capacitance associated with the fluid chamber when no fluid is in the chamber. | 01-07-2010 |
20100058844 | Ethanol concentration sensor - A level of fluid in a container is determined as is a capacitance associated with the fluid. The capacitance and level are used to determine a concentration of ethanol in the fluid. | 03-11-2010 |
Luis Urquidi, Oceanside, CA US
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20110313288 | APPARATUS, SYSTEMS, AND METHODS FOR LOCALIZING MARKERS OR TISSUE STRUCTURES WITHIN A BODY - Apparatus, systems, and methods are provided for localizing lesions within a patient's body, e.g., within a breast. The system may include one or more markers implantable within or around the target tissue region, and a probe for transmitting and receiving electromagnetic signals to detect the one or more markers. During use, the marker(s) are into a target tissue region, and the probe is placed against the patient's skin to detect and localize the marker(s). A tissue specimen, including the lesion and the marker(s), is then removed from the target tissue region based at least in part on the localization information from the probe. | 12-22-2011 |
Luis R. Urquidi, Oceanside, CA US
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20110230700 | EXPANDABLE BRACHYTHERAPY APPARATUS AND METHODS FOR USING THEM - Brachytherapy treatment apparatus are provided that include an elongate body including a core member and an outer member surrounding and movable relative to the core member. One or more helical catheters are provided on a distal portion of the elongate body, e.g., including distal ends coupled to the core member and proximal ends coupled to the outer member. The outer member is movable relative to the core member, e.g., axially and/or rotationally, to direct the helical catheters between a collapsed configuration for introduction through a tissue tract to a target location, e.g., a lumpectomy cavity, and an expanded configuration. Each helical catheter includes a lumen, and, after expansion to the expanded configuration, a source of radiation may be introduced along the helical catheters and/or a lumen of the core member for delivering radiation to the target location. Optionally, the apparatus may include a balloon surrounding or within the helical members. | 09-22-2011 |
Ronald Urquidi, Van Nuys, CA US
Patent application number | Description | Published |
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20100075171 | NANO-GRAINED ALUMINUM ALLOY BELLOWS - A bellows includes a flexible section including a series of convolutions extending between a first end and a second end. The convolutions are formed of a nano-grained aluminum alloy. | 03-25-2010 |