Patents Represented by Law Firm Brooks Haidt Haffner & Delahunty
  • Patent number: 6038047
    Abstract: A digital optical telecommunication method including the steps of: generating a digital modulated optical signal in an optical transmitting station, which signal corresponds to a first electric input signal carrying a piece of information; feeding the modulated optical signal to an optical-fiber line; receiving the modulated optical signal transmitted from the optical-fiber line at an optical receiving station, converting it to an electric form and thereat generating a second digital electric signal; wherein the modulated optical signal is coded in a sequence of elementary information units at a first frequency and wherein the step of generating a second digital electric signal comprises detecting in said converted signal, an electric signal having a second frequency higher than the first frequency and recognizing in said detected signal, the phase of an electric signal at the first frequency by comparing a received sequence of elementary information units with at least one reference sequence and verifying th
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: March 14, 2000
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Adriano Nava, Mario Tamburello
  • Patent number: 5998392
    Abstract: Improved compositions of benzoyl peroxide are prepared by at least partially dissolving benzoyl peroxide in diethylene glycol monoethyl ether to prepare a premixture which forms a flocculent composition of benzoyl peroxide when admixed with water or an aqueous medium. The improved benzoyl peroxide compositions have a small particle size compared with those prepared by conventional grinding techniques and the time and potential hazards associated with grinding are avoided. The small particle size of the benzoyl peroxide flocculents result in increased surface area of active ingredient on the skin for a given concentration of benzoyl peroxide. The flocculent compositions are used to prepare compositions for the topical treatment of acne or other dermatological disorders.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: December 7, 1999
    Assignee: Gattefosse s.a.
    Inventors: Veronique Simard, David Garlen, Kenneth Klein
  • Patent number: 5993205
    Abstract: An orthodontic bracket comprising a base plate having an edge configuration in which the mesial and distal edges are formed to extend in parallel to mesial and distal secants of the tooth crown. Those secants extend close to the mesial and distal edges of the tooth's crown when seen in front view between the mesial and distal junctions of the enamel, respectively, and the cement at the gingival edge of the tooth and the junction of the incisal edge or cusp and the mesial and distal edge, respectively, of the tooth's crown. Thereby, the positioning of the bracket in conformity with the anatomy of the tooth's crown is facilitated.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: November 30, 1999
    Inventors: Wolfgang Heiser, Claus Schendell
  • Patent number: 5929180
    Abstract: The present invention relates to a process for continuous gas-phase polymerisation of olefin(s) in a fluidized-bed reactor, comprising drawing off the polymer from the vertical side wall of the reactor into a lock hopper via a draw-off conduit so that all flow of the polymer in the draw-off conduit is produced according to a downward direction forming with a horizontal plane an inclination with an angle A at least equal to the angle of repose .beta. of the polymer and not exceeding 90.degree.. The present invention improves the degree of filling of the lock hopper and reduces the amount of gas drawn off with the polymer.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: July 27, 1999
    Assignee: BP Chemicals Limited
    Inventor: Jean-Claude Chinh
  • Patent number: 5914059
    Abstract: A filler material is melted into a metallic substrate having a defect under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large diameter for an extended length of time to produce a molten pool with a low aspect ratio.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: June 22, 1999
    Assignee: United Technologies Corporation
    Inventors: John Joseph Marcin, Jr., Justin Andreas Neutra, David Henry Abbott, James Peter Aduskevich, Dilip M. Shah, Dorothea Nadette Carraway, Raymond Paul Langevin, Marc R. Sauerhoefer, Richard Alan Stone
  • Patent number: 5911361
    Abstract: A viscous heater includes a heat generating chamber 10 of a sealed structure. The viscous heater is further provided with a storage chamber SR, which is in communication with the heat generating chamber 10 at its central part, via a recovery hole 3c, a feed groove 3f and a feed hole 3e formed in a rear plate 3 and a rear housing 4. The storage chamber SR can store an amount of the viscous fluid, which exceeds the volume of a heat generating gap between an inner surface of the heat generating chamber and an outer surface of a rotor 16. The speed of degradation of the viscous fluid is slowed, while eliminating the necessity of a strict administration of a charged amount of the viscous fluid.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: June 15, 1999
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Shigeru Suzuki, Takashi Ban, Tatsuyuki Hoshino, Tatsuya Hirose
  • Patent number: 5903371
    Abstract: An optical self-healing-ring communication network is described which include: a first optical communication line, forming a closed optical path; at least two add/drop nodes for optical signals, optically connected along the line; a second optical communication line forming a closed optical path and optically connected to the optical-signal add/drop nodes. Defined in the network are first and second mutually opposite travel directions of the optical signals, with respect to the position of the optical-signal add/drop nodes. At least one of said nodes further comprises selection means, controlled by the optical signals, for the selective dropping of the optical signals from one of the communication lines. At least one of the optical-signal add/drop nodes further include means for the simultaneous input of at least one optical signal in the first direction along the first communication line and in the second direction along the second communication line.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: May 11, 1999
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Fulvio Arecco, Fausto Meli, Marcos Antonio Brandao Sanches
  • Patent number: 5902506
    Abstract: High frequency electrical heating apparatus in which metal parts are heated as they are advanced,either for annealing or forge welding purposes,and in which the electrical heating current is supplied by solid state D.C. to A.C. inverter through a load matching and frequency control circuit which maintains the desired load current and current frequency with changes in the load impedance caused by the metal parts as they are advanced.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: May 11, 1999
    Assignee: Thermatool Corp.
    Inventors: Paul Scott, Michael Turzhitsky, Thomas Lee, Wallace C. Rudd
  • Patent number: 5899859
    Abstract: Methods and apparatus for kinematic studies of the movable joints of the body using magnetic resonance imaging. The apparatus controls the position of movable joints at a multiplicity of predetermined positions, enabling the controlled movement of the joints to each of the predetermined positions. It also includes a device which automatically sequences the movement of a movable joint to each position among the multiplicity of predetermined positions, and the acquisition of magnetic resonance imaging data at each of these positions. These features enhance the clinical utility of kinematic studies of movable joint functionality by magnetic resonance imaging.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 4, 1999
    Assignee: Fonar Corporation
    Inventors: Jan Votruba, Rajendra Shenoy, Raymond V. Damadian
  • Patent number: 5900170
    Abstract: A containerless method of producing a crack free metallic article of near-net shape includes melting a filler material into a metallic substrate or seed under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large beam diameter at the substrate surface for an extended length of time to produce a molten pool with a low aspect ratio. Near-net shape is achieved by applying the process in a closed-loop, multi-axis material deposition system.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: May 4, 1999
    Assignee: United Technologies Corporation
    Inventors: John Joseph Marcin, Jr., Justin Andreas Neutra, David Henry Abbott, James Peter Aduskevich, Dilip M. Shah, Dorothea Nadette Carraway, Raymond Paul Langevin, Marc R. Sauerhoefer, Richard Alan Stone
  • Patent number: 5893706
    Abstract: A compressor having a compression mechanism within a housing for compressing a refrigerant gas according to the rotation of a rotary shaft operatively connected to an external power source. A pulley is mounted on the rotary shaft and located on one side of the housing for transmitting power from the external power source to the shaft. A fan sends air to the outer surface of the housing by rotating with the pulley. Heat transferring fins are provided on the housing adjacent to the fan.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: April 13, 1999
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Masahiro Kawaguchi, Masanori Sonobe, Takuya Okuno, Takashi Michiyuki, Ken Suitou, Shinichi Ogura
  • Patent number: 5890876
    Abstract: A control valve in a compressor that adjusts the discharge displacement based on controlling of an inclination of a cam plate. The compressor includes a supply passage for connecting a discharge chamber with a crank chamber. The control valve is placed midway on the supply passage for adjusting the amount of the gas introduced into the crank chamber from the discharge chamber. The control valve has a valve hole and a valve chamber respectively disposed midway on the supply passage. A valve body is located in the valve chamber to adjust the opening size of the valve hole. A reacting member reacts to the pressure in the first area. The reacting member moves the valve body via a first rod in accordance with the pressure in the first area. A solenoid is opposed to the reacting member with respect to the valve body. The solenoid has a fixed core, a plunger and a plunger chamber.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: April 6, 1999
    Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, NOK Corporation
    Inventors: Ken Suito, Masahiro Kawaguchi, Hiroshi Kubo, Tomohiko Yokono, Norio Uemura, Kazuaki Nagayoshi, Ichiro Hirata, Kouji Watanabe
  • Patent number: 5865212
    Abstract: An automatic by-pass valving system for an electrical cable system wherein insulating fluid at a pressure above atmospheric pressure is supplied to an electrical power cable, such as a pipe-type or self-contained cable, having a fluid flow channel and having at least one hydraulic stop interrupting the flow of fluid between the channels of adjacent portions of the cable which are at different elevations. The valving system comprises a check valve, which allows fluid flow only in a first direction, from the lower elevation portion to the higher elevation portion, and a flow-limiting valve, which allows fluid flow only in a second direction, from the higher elevation portion to the lower elevation portion, at a reduced rate. Preferably, a relief valve is also provided to allow fluid flow in the second direction at a higher rate if the fluid pressure difference in the second direction is exceeded by a predetermined amount.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: February 2, 1999
    Assignee: Pirelli Cable Corporation
    Inventor: Bryan Gaines
  • Patent number: 5863995
    Abstract: The present invention relates to an ethylene polymerization process carried out with the aid of a catalyst system of the Ziegler-Natta type consisting essentially of titanium, halogen and magnesium. The process is performed such that the ethylene polymerization takes place in the presence of a polychlorinated saturated hydrocarbon compound. The halogenated hydrocarbon compound is used in a quantity such that the molar ratio of the halogenated hydrocarbon compound to titanium of the catalyst is in the range from 0.01 to 1.8. Preferably the halogenated hydrocarbon compound is chloroform or trichloro-1,1-ethane.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: January 26, 1999
    Assignee: BP Chemicals Limited
    Inventor: Erick Daire
  • Patent number: 5857402
    Abstract: A variable displacement compressor includes an inclining swash plate connected to a drive shaft. A rotor rotates integrally with the drive shaft. A guiding mechanism is provided between the swash plate and the rotor to guide the inclination of tho swash plate between a minimum inclination position and a maximum inclination position and thus change the stroke of the piston. An abutment is provided to restrict the inclination of the swash plate. In another embodiment, a cap included in the guiding mechanism determines the maximum inclination position of the swash plate. In one embodiment, the maximum inclination position is determined by the length of a spring arranged between the swash plate and the rotor. In another embodiment, a spacer is arranged between the swash plate and the rotor. The thickness of the spacer determines the maximum inclination position. The maximum displacement of the compressor can be changed by changing only one part.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: January 12, 1999
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Takahiro Hoshida, Shigeki Kanzaki, Kazushige Murao
  • Patent number: 5855261
    Abstract: A system for supplying electric power to an electrically powered vehicle includes a feeder disposed along a structural member as a guide rail that guides the vehicle. The vehicle has an electric power receiving unit that receives electric power from the feeder on a non-contact basis. The electric power receiving unit has a ferrite core with a coil. A ferrite sheet is disposed on a surface of the structural member in such a manner that the ferrite sheet is opposite to the electric power receiving unit. The feeder is surrounded by the ferrite core and the ferrite sheet. When an AC current is supplied to the feeder, a magnetic flux that penetrates the ferrite core and the ferrite sheet varies, thereby causing electromotive force to occur in the coil.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: January 5, 1999
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Yasuharu Odachi, Masaki Takasan, Norimoto Minoshima
  • Patent number: 5853399
    Abstract: The present invention relates to a puncture method and a puncture system. More specifically, the objective of the present invention is to carry out the aspiration of a sample from a human organ or an animal organ and the inner examination thereof, without the outward leak of the fluid and the like in the organ.The puncture method and puncture system of the present invention is in the following structure; making a parasol part arranged on a reservoir adhere through an adhesive to the site to be punctured, inserting a needle body through a sealing part of the reservoir into the site to be punctured to draw out the inner fluid, the leak of the fluid can be prevented by the reverse operation of the sealing part.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: December 29, 1998
    Inventor: Hiroshi Sasaki
  • Patent number: 5851439
    Abstract: A coloring layer composition for a chromatic device of the present invention contains an oxide such as tungsten oxide or niobium oxide and so on as a solute, water and an organic solvent such as propanol. In the step of forming a reduction coloring layer, a film is formed by using a peroxotungstic acid solution containing 100 parts by weight of WO.sub.3.aNb.sub.2 O.sub.5.bH.sub.2 O.sub.2 .andgate.cH.sub.2 O (wherein a, b and c are each a positive number) as a solute, 20 to 120 parts by weight of water and 80 to 800 parts by weight of n-propanol as an organic solvent. At this time, a dip coating method is used, and the vertical pulling-up speed is less than 15 cm/min. The present invention can effectively prevent unevenness and separation of the reduction coloring layer.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: December 22, 1998
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Toshiki Inoue, Yoshifumi Kato, Hisashi Shiraki, Takanori Murasaki
  • Patent number: 5852510
    Abstract: An optical telecommunication system including a transmitting station and a receiving station for optical signals, connected with each other by an optical fiber line including optical line amplifiers having a rare-earth-doped active fiber and connected in series, in which the transmitting station includes signal generator for generating signals at several wavelengths, and connections for conveying the signals to a single optical fiber line. The optical signal receiving station includes apparatus for separating the signals. At least one of the optical line amplifiers has dopants, fiber length and pumping power capable of determining, at the input of the receiving station, an optical signal/noise ratio which for the different wavelengths has a difference less than 2 dB, and for each signal is greater than 15 dB.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: December 22, 1998
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Fausto Meli, Stefano Piciaccia
  • Patent number: 5851680
    Abstract: There is disclosed a titanium nitride doped with boron crystallizing with the same structure as titanium nitride TiN and having a Vickers microhardness greater than approximately 50 GPa. There is also disclosed an anti-wear coating comprising this titanium nitride doped with boron. There are also disclosed parts such as metal parts, tungsten carbide parts and cermet parts, for example, including a coating of this type.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: December 22, 1998
    Assignee: Tecmachine
    Inventor: Christophe Heau