Patents Represented by Law Firm Mason, Fenwick and Lawrence
  • Patent number: 5267320
    Abstract: A noise controller which noise-controls a movable point so that a noise generated from a noise source and transmitted to the movable point can be reduced. The noise controller filters the noise in accordance with a least mean square algorithm and generates an antinoise to be collided with the noise so that the antinoise and the noise can cancel each other out. When a filter coefficient used for the least mean square algorithm is renewed, the noise controller uses position data of the movable point. Thus, even if the movable point moves, the proper noise-control can be performed.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: November 30, 1993
    Assignee: Ricoh Company, Ltd.
    Inventor: Kenji Fukumizu
  • Patent number: 5267117
    Abstract: The present invention provides a simple, reliable, comprehensive electrical phase and amplitude fault detection and response system. The system includes means for detecting any of various electrical faults, such as impermissibly low voltage levels, impermissibly high voltage levels, phase dropouts, single-phasing, phase reversals, and/or total power loss. Further, the invention provides both fault detection and response customized to the plant equipment, providing power cut-off an appropriate time after a given fault is detected, and preventing premature power restoration when the line power has not been fully returned to normal. The system provides the fault detection and response functions without the need for electrical power of its own, avoiding dependence on line voltage, batteries or back-up generators. This functioning independent of the presence of electrical power is enabled through use of a pneumatic arrangement for interrupting power to plant equipment.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: November 30, 1993
    Assignee: Johnson & Wilson Co. Sales and Service, Inc.
    Inventor: Clifford B. Moore
  • Patent number: 5261864
    Abstract: Physical exercising apparatus comprising a ground-supported user platform adapted to permit step-up exercise and at least one elastic member one end of which is attached to the apparatus and the free end of which carries a user handle to enable a user to exercise by stretching the elastic member while supported at least in part on the platform.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: November 16, 1993
    Inventor: Patrick C. Fitzpatrick
  • Patent number: 5260674
    Abstract: A first aspect of the present modulator provides for a reduction in an otherwise maximum level of an analog input signal during a particular time period (for example, the period of the synchronization pulse in an analog television format). When the normally predictable high-amplitude portion is reduced in amplitude, combiner power efficiency is increased. To regain the full amplitude, the gain of the amplifier corresponding to the most significant bit of the digitized signal being modulated, is increased. A second aspect of the present modulator provides an automatic gain control AGC arrangement especially suitable for the modulator of U.S. Pat. No. 4,804,931. The AGC arrangement is based on a circuit that is governed by the output of a respective amplifier as well as by the binary value of the respective bit corresponding to the significance of the amplifier and a reference value related to the bit's significance.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: November 9, 1993
    Assignee: Acrodyne Industries, Inc.
    Inventor: Timothy P. Hulick
  • Patent number: 5259221
    Abstract: A lock has a keeper plate for attachment to a first relatively moveable part of the trunk, which keeper plate has a peripheral rim bounding a circular keeper opening and having a slot formed therein. An attachment plate is affixed to a second relatively moveable part of the trunk, while a hasp member is hingedly connected at one to the attachment plate and adapted at the other end to overlie the peripheral rim and the keeper opening when in a mated position. A hollow cylindrical bolt housing of cup-shaped configuration is fixed to and projects rearwardly of the hasp member. The bolt housing includes a cylindrical wall having a bolt opening therein positioned to align with the slot when the hasp member and the latching plate assume the mated position. A latching bolt is supported in the bolt housing for movement along an axis paralleling a diameter of the bolt housing, and has a free end portion aligned with the bolt opening.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: November 9, 1993
    Assignee: Long Manufacturing Company, Inc.
    Inventor: Phillip Whitmore
  • Patent number: 5260586
    Abstract: An optical EXCLUSIVE-OR element in which the number of basic elements is reduced which results in increased integration of the element. The optical EXCLUSIVE-OR element comprises a substrate, a first optical functional element and a second optical functional element having the same structure as that of the first optical functional element. Each of the first and second optical functional elements has a light receiving portion and a light emitting portion. The light emitting portion is formed on the light receiving portion. The light emitting portion comprises semiconductor materials having an energy gap wider than the dominant peak energy of the input light, and the light receiving portion comprises semiconductor materials having an energy gap equal to or narrower than the dominant peak energy of the input light. A first electrode is formed over the first and second optical functional elements, and has windows which allow the input light and output light to pass through.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: November 9, 1993
    Assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics Co., Ltd.
    Inventors: Hiroshi Kondoh, Kiyoshi Yamaguchi, Yasuhiro Osawa
  • Patent number: 5258780
    Abstract: An image forming apparatus includes a semiconductor laser unit for emitting a laser beam, a photosensitive drum which rotates in a first direction, a scanning optical system for making the laser beam scan the photosensitive drum in a second direction perpendicular to the first direction, wherein an electrophotography process is carried out on the surface of the photosensitive drum, a data generator for generating intensity data for each dot in an image in accordance with image information supplied from an external controller, and a laser driver for outputting a driving signal which drives the semiconductor laser unit, the driving signal having a pulse width and a level for each dot in an image, the pulse width being a predetermined value less than a value corresponding to an interval between adjacent dots formed in a direction parallel to the first direction, and the level corresponding to the intensity data generated by the data generator.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: November 2, 1993
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidetoshi Ema, Hitoshi Hattori, Masaaki Ishida, Susumu Imakawa, Yoshinobu Takeyama
  • Patent number: 5257742
    Abstract: An ultrafine grinding mill in which fed material flows down through an agitated bed composed of small grinding medium characterized in that the ultrafine grinding mill comprises a vertically arranged cylindrical housing, a net member having a mesh size preventing the grinding medium from passing therethrough and arranged at the bottom of the cylindrical housing, a rotary shaft arranged on a central axis of the cylindrical housing, and agitating blades mounted at several stages on the rotary shaft, and in that both a gap between the tip of each agitating blade and the inner surface of the cylindrical housing and a gap between the agitating blade of the lowermost stage and the net member are not more than 2/3 the diameter of the grinding medium at room temperature.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: November 2, 1993
    Assignee: Fimatec Ltd.
    Inventors: Saburoh Yashima, Sadayuki Naitoh, Hiroyuki Takahashi, Manabu Abe
  • Patent number: 5258594
    Abstract: This invention relates to a high frequency heating process for treating a transformer core and windings. The process includes the steps of maintaining vacuum in an enclosure wherein the windings are to be treated, heating the windings with high frequency current, measuring the insulation resistance of the windings until a constant value is reached, stopping heating, filling the enclosure with oil, and then drying the oil from the enclosure. Alternatively, the transformer core and windings can be treated by encapsulating the winding with a polymerized resin, allowing the resin to flow into the mould and against the sides of the winding in a controlled fashion to enable polymerization of the resin to spread horizontally in a thin layer.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: November 2, 1993
    Inventors: Rene Pioch, deceased, by Sylvie Pioch, heir, by Colette Cahulau, heir, by Isabelle Pioch, heir, by Evelyne Pioch, heir, by Olivier Pioch, heir
  • Patent number: 5256411
    Abstract: A method for treating an immune system disorder in a human by administering to the human a therapeutically effective amount of an active substance selected from the group consisting of PP14, derivatives of PP14, muteins of PP14, fragments of PP14, and subunits of PP14, to alleviate the immune system disorder.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: October 26, 1993
    Assignee: Intermune Life Sciences, Inc.
    Inventors: Anthony E. Bolton, Alan Drizen
  • Patent number: 5253595
    Abstract: A modular system for office furniture comprising a sufficient number of three types of modules, each corresponding to one or more of the following functions: a "working surface" function, a "support" function, a "storage" function, and an "electrical wire guiding function." The first module, a "table top module," provides a working surface which performs the "working surface" function. It comprises three sections, two end sections and a middle connecting section, and is supported by the second and third modules. The end sections of the first table top module each rest on a second "support" module which performs both the "support" and "storage functions." The third module is a column having upper and lower portions and performs both the "electrical wire guiding" and support functions." The upper portion contains the electrical wires of all hardware and appliances distributed on the table top module and the lower supports the middle section of the first table top module.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: October 19, 1993
    Assignee: Steelcase Strafor (S.A.)
    Inventor: Charles Heidmann
  • Patent number: 5254528
    Abstract: A brake device which performs a braking operation on a rotating body in a non-contact mode, thereby substantially eliminating the need for replacement of components. To achieve this object, the invention provides a brake device which is especially suitable for use at temperatures allowing Type II superconducting properties. A magnet and a superconductor are provided, one of which is provided on a rotating body to be braked. The quantity of magnetic flux from the magnet which permeates the superconductor is controlled so as to provide a counter-rotative force to the rotating body. According to a first aspect of the invention, a permanent magnet is provided, along with a displacing mechanism to change the distance between the permanent magnet and the superconductor. According to a second aspect of the invention, an electromagnet is provided, along with a control device for controlling the magnetic strength of the electromagnet.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: October 19, 1993
    Assignee: Koyo Seiko Co., Ltd.
    Inventor: Ryoichi Takahata
  • Patent number: 5253953
    Abstract: A boom includes a plurality of boom sections joined end to end. Each boom section includes two or more parallel inflatable chambers which are joined with a weighted curtain which is reinforced for strength. Boom sections are stored compactly on respective reels. A substantial number of reels are arranged compactly in the hold of a carrier vessel which is smaller in size and has greater speed and maneuverability than vessels carrying known oil spill containment systems. Boom sections are consecutively unwound from their respective reels and connected end-to-end as they are deployed to form a continuous boom. The boom sections unwind naturally from the reels as the carrier vessel moves through the water away from a tender vessel holding the first end of the boom. The boom's deployment is controlled by a brake on an idler roller and a hydraulic crane's drive wheel on the reel, thus limiting manual handling to lighter-weight tasks.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: October 19, 1993
    Inventor: Malcolm B. Whidden, Jr.
  • Patent number: 5253733
    Abstract: In order to appropriately distribute a lubricating oil of high viscosity to lubrication points through a simple construction in oil and air lubrication, in a preferred embodiment of the present invention, three distributors 8, 9 and 10 are provided between oil feed passages 7, the most downstream one of which is connected at the downstream end of the passage to a fourth branch passage 14. Quantities of the lubricating oil are passed through the holes A, B and C of the first distributor 8, those E and F of the second distributor 9 and that H of the third distributor 10. Other quantities of the oil, which are nearly equal to each other, are sent to three lubrication points through the other holes D, G and I of the distributors 8, 9 and 10 and a first, a second and a third branch passages 11, 12 and 13. The three lubrication points are a point at contact-type oil seals 5, and two points in a four-train conical roller bearing 3.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: October 19, 1993
    Assignee: Koyo Seiko Co., Ltd.
    Inventor: Takeshi Miyachi
  • Patent number: 5253080
    Abstract: A picture signal binarization apparatus includes two comparators for converting an analog signal into a binary signal by comparing the analog signal with two different thresholds, two counters for counting inversions of the binary signal from each comparator and supplying a count signal indicative of the number of inversions of the binary signal from each of the comparators, and a selection part for selecting a binary signal from one of the comparators in response to the count signal supplied from one of the counters so that the selected binary signal is outputted as a subsequent output binary signal, the number of inversions indicated by the count signal from the one of the counters first reaching a predetermined value.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: October 12, 1993
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinichi Nishimura, Hiroyuki Kudose, Shingo Yamaguchi
  • Patent number: 5251543
    Abstract: An accessory for supporting a boneless cut of meat, for use in conjunction with a spiral meat slicer having an upper support bracket and a rotatable turntable positioned below the support bracket, and in which the turntable has a plurality of prongs extending upwardly therefrom, comprises a skewer assembly including a skewer and a base for supporting the skewer, a vertically-adjustable lower stop member slidably carried by the skewer, a vertically-adjustable upper prong member slidably carried by the skewer and positioned above the stop member, and a spindle assembly including a rod for slidably engaging the bracket and an adapter having a central bore therein for receiving the apex of the skewer. The base has a plurality of holes formed therein dimensioned and positioned to receive the prongs of the turntable.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: October 12, 1993
    Assignee: The Original Honey Baked Ham Company of Georgia, Inc.
    Inventor: Daniel L. Brothers
  • Patent number: D340646
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: October 26, 1993
    Assignee: Maison Jeanjean
    Inventor: Bernard Jeanjean
  • Patent number: D341326
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: November 16, 1993
    Assignee: Societe nouvelle Chaumet, S.A.
    Inventor: Xavier Rousseau
  • Patent number: D341583
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: November 23, 1993
    Assignee: Transaction Technology, Inc.
    Inventors: Ernest Bevilacqua, David Conroy, William Doyle, Robert Haddock, Anne Lang, Joseph Moya, Arthur Nichols, Carl Thompson
  • Patent number: D341684
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: November 23, 1993
    Assignee: Frank L. Wall
    Inventors: Edward L. Wall, Frank L. Wall, Paul E. Beale