Abstract: An inverse dispersion fiber having a large effective area and a transmission system that incorporates the fiber for providing dispersion and dispersion slope compensation in a transmission fiber. The large-effective-area inverse dispersion optical fiber (IDF) has a negative dispersion and a negative dispersion slope. The effective area, Aeff, of the IDF preferably is greater than approximately 31 micrometers squared (?m2) at a transmission wavelength of approximately 1550 nm. The large-effective-area IDF is suitable for use with super-large-effective-area (SLA) transmission fiber for compensating dispersion in the SLA transmission fiber while reducing nonlinear effects between wavelength channels and cabling loss, which is especially advantageous in transoceanic and long-haul terrestrial systems. These nonlinear effects are inversely related to the effective area of the fiber (i.e., nonlinearities˜1/Aeff).
Type:
Grant
Filed:
June 11, 2003
Date of Patent:
October 25, 2005
Assignee:
Fitel U.S.A. Corporation
Inventors:
David Kalish, Robert Lingle, Jr., David W. Peckham, Yi Sun
Abstract: A mobile chamber has an inlet for receiving polluted water and an outlet for pollution-free water to flow out. A mobile trap operating system includes an output pump, an input pump, a pollution tank, and a liquid tank, all operably connected to the chamber. Within the chamber is a collection reservoir with a skimming edge for skimming off floating pollutants such as motor oil, other hydrocarbons, and detergents. Alternative embodiments include a screen, baffles, and/or pivotal filter for further separating the pollutants from the water. A method for separating the pollutants from the water includes directing the water from the water tank at the pollutants and into a collection pool of polluted water, drawing the polluted water into the chamber, receiving the skimmed pollutants from the collection reservoir into the pollution tank, and receiving the pollutant-free liquid from the chamber into the liquid tank.
Abstract: A trailer hitching apparatus comprises a trailer hitch receiver assembly, a winching device, a trailer hitch and a cable. The trailer hitch receiver assembly includes a receiver tube having a first end, a second end, an opening at the second end, and a passage extending from the opening toward the first end. The cable extends through the opening. The trailer hitch receiver assembly is mountable on a chassis of a vehicle. The winching device is mountable on at least one of the chassis of the vehicle and the trailer hitch receiver assembly. The trailer hitch includes a receiver stub configured for being engaged within the receiver tube through the opening at the second end of the receiver tube. The cable has a first end attached to a spool of the winching device and a second end attached to the receiver stub of the trailer hitch.
Abstract: Intraocular lenses and methods producing the same are provided. The intraocular lens includes an optic and a haptic that are integrally formed together. The haptic has a polyimide coating. The polyimide coating promotes fibrosis in the surrounding eye tissue to enhance the anchoring of the IOL after it is implanted in an eye.
Abstract: A chamber has an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a collection reservoir having an adjustable weir with a skimming edge for skimming off floating matter such as motor oil, other hydrocarbons, and detergents. In alternative embodiments, there are included a screen, one or more baffles, and/or a pivotal filter for further dispersing, detaining, and/or filtering the storm water.
Abstract: Disclosed is an Amplifier (7) comprising an output driver with a first output stage (4) and a second output stage (5), where an input signal is applied non-inverted to the first output stage and inverted to the second output stage, characterized in that said input signal is applied with delay to one of the output stages (4, 5).
Abstract: A method and an apparatus for obtaining measurements of eccentricity in optical fibers, from which the spin imparted to the optical fiber can be ascertained. The method and apparatus enable eccentricity to be measured in such a way that this measurement can be utilized to determine the amount of spin imparted to an optical fiber as the optical fiber was being drawn, although the eccentricity measurement may be used for purposes other than to determine the amount of spin in the fiber. By viewing the fiber from one or more positions along the length of the fiber, the eccentricity of the fiber as a function of position along the length of the fiber can be determined. The amount of spin in the fiber can then be determined from the eccentricity measurement.
Type:
Grant
Filed:
January 30, 2003
Date of Patent:
August 30, 2005
Assignee:
Fitel U.S.A. Corporation
Inventors:
Andrew Ingles, Jr., Albert Ritger, Zhi Zhou, Harry D. Garner
Abstract: A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a pivotal filter that catches clay during typical storm flows and pivots out of the way during higher flows. In alternative embodiments, there are included a screen, one or more baffles, and/or a collection reservoir for further dispersing, detaining, and/or filtering the storm water.
Abstract: A composite composition and a method of making such a composite that is composed of a matrix material and dispersed reinforcement nanotubes that are substantially aligned along at least one specified direction or axis.
Type:
Grant
Filed:
March 14, 2003
Date of Patent:
August 23, 2005
Assignee:
Auburn University
Inventors:
Bor Z. Jang, Jun H. Liu, Shizu Chen, Zhimin M. Li, Hassan Mahfuz, Ashfaq Adnan
Abstract: This invention relates generally to opthalmic molds and methods useful for casting opthalmic moldings. In one aspect, the invention relates to a mold for casting an opthalmic molding formed from a first mold half detachably affixed to a second mold half, whereby the mold has a top and a bottom; and a cavity formed by the first and second mold halves, wherein the cavity receives a lens forming material through an opening at the bottom of the mold and vents gas and excess lens forming material from an opening at the top of the mold. In another aspect, this invention relates to methods for casting opthalmic moldings, particularly intraocular lenses.
Type:
Grant
Filed:
March 15, 2002
Date of Patent:
August 16, 2005
Assignee:
Novartis AG
Inventors:
Rafael Victor Andin, Tracy Weldon, Richard Charles Turek
Abstract: A colored contact lens having a very natural appearance is disclosed. The inventive lens has a non-opaque pupil section and iris section that is at least partially opaque and comprised of two portions. A first portion, generally located on the outside of the iris section, has a first shade. A second portion, generally located on the inside of the iris section has a second shade. A jagged border separates the two portions. A third iris section and second jagged border are also disclosed. In some embodiments portions of the iris section may be non-opaque.
Abstract: A golf training club comprising optical sensors, electronics and a display to provide visual feedback related to how a golfer strikes a golf ball. The club includes a shaft having a grip end and a tip distal from the grip end. The club has a club head affixed to the shaft proximate the tip that has a face for striking a golf ball. The optical sensors are embedded in the head and generate signals representative of the contact between the face and ball. The electronics, mounted within the shaft's grip end, process the sensor signals to determine the location of the contact between the face and ball. The display is operable to show such location. The electronics also process the sensor signals to determine whether the ball is tending to slice or hook by detecting lateral movement of the ball during contact with the face.
Abstract: A securing mechanism for use in a holster, gun safe, base station, recharging/docking station, gun rack, or other safety housing for a firearm or other item, including one or more retaining members that engage the trigger guard, barrel, or other part of the firearm to prevent withdrawl of the firearm from the safety housing by anyone other than an authorized user of the firearm. The securing mechanism includes a biometric identification mechanism such as a fingerprint sensor for scanning fingerprint information of a prospective user of the firearm, and a processor for comparing the scanned biometric information with stored biometric information of an authorized user and releasing the retaining member only if the scanned biometric information matches that of the authorized user.
Type:
Grant
Filed:
April 4, 2002
Date of Patent:
July 19, 2005
Assignee:
Safety First Devices, Incorporated
Inventors:
Albert W. Vor Keller, David R. Fletcher, Robert C. Chinn
Abstract: A super-large-effective-area (SLA) optical fiber that is suitable for communicating over a wide wavelength range and that, because of its large effective area, suppresses nonlinear effects that typically result from interaction between signal channels. The effective area, Aeff, of the SLA fiber of the present invention preferably is equal to or greater than approximately 80 ?m2 at a wavelength window around 1310 nm. The cutoff wavelength of the SLA fiber of the present invention preferably is less than 1310 nm. Thus, the SLA fiber of the present invention has a very large effective area and a very low cutoff wavelength. In accordance with the present invention, a variety of SLA fibers are provided that all have very large effective areas and desirable transmission properties. The large effective areas of the SLA fibers of the present invention enable nonlinear effects to be suppressed, as well as Stimulated Brillouin Scattering in analog transmission.
Abstract: The present invention relates to a process for the manufacture of a porous polymer; wherein a composition comprising a polymerizable component, a porogen having an inverse temperature dependent solubility and a solvent are polymerized at a temperature around the cloud point temperature of the composition. The porous polymers obtainable according to the process of the invention are useful, for example, as materials for the manufacture of biomedical devices and prostheses, including ophthalmic devices such as contact lenses or artificial corneas.
Type:
Grant
Filed:
July 22, 2003
Date of Patent:
May 24, 2005
Assignee:
Novartis AG
Inventors:
Angelika Maria Domschke, Vimala Mary Francis
Abstract: At least two rotors are mounted in a chamber and rotate synchronously to compress and/or transport fluid. The chamber has the shape of partially overlapping circles with each circle intersecting the center of the adjacent circle. The rotors are non-eccentric and have curved sides with the same radius as the circles. In exemplary embodiments, the rotors are trochoidal and the chamber is epitrochoidal. Also provided are compressors, pumps, actuators, and engines incorporating the rotary machine.
Abstract: A body has a support surface for temporarily supporting a siding, trim, or other construction piece that is to be installed on a building wall. A suction cup is controllable to temporarily adhere by suction the support device to the building wall. An extendible spacer is used to accurately position the support device on the building wall. Notches in the body receive the ends of a tape measure or chalk line for accurately sizing and positioning the construction pieces. The support device can be used with existing compressors, vacuum pumps, or other suction-inducing devices. A venturi tube in the body generates the suction when an air compressor is used. A method of installing the siding, trim, or other construction pieces is also provided.
Abstract: A method and apparatus for loading and ejecting ignition devices into a muzzle-loading firearm. A magazine contains a plurality of ignition devices, which are sequentially loaded from the magazine onto the breech plug of the firearm by a sliding bolt or other loading assembly. After firing, the loading assembly is actuated to extract and eject the spent ignition device and load a new ignition device onto the breech plug.
Abstract: The present invention comprises tunable optical wavelength filters and multi-level optical integrated circuits which use resonant optical cavities in a vertical arrangement with input and output waveguides. The resonant optical cavities are vertically separated from the input and output waveguides by a material or region of lower refeactive index. The vertical arrangement allows accurate control over the gap size between the waveguides and the cavities during manufacture. The present invention also enables the use of electrodes for enhancing tuning characteristics and for multiple tunable optical wavelength filters to be created in vertical alignment with one another by placing two resonant optical cavities and their respective input and output waveguides in vertical alignment with a low refractive index buffer between the multiple tunable optical wavelength filters.