Patents Represented by Law Firm Mason, Fenwick and Lawrence
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Patent number: 5267320Abstract: 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: GrantFiled: March 12, 1992Date of Patent: November 30, 1993Assignee: Ricoh Company, Ltd.Inventor: Kenji Fukumizu
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Patent number: 5267117Abstract: 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: GrantFiled: June 28, 1991Date of Patent: November 30, 1993Assignee: Johnson & Wilson Co. Sales and Service, Inc.Inventor: Clifford B. Moore
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Patent number: 5261864Abstract: 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: GrantFiled: March 24, 1992Date of Patent: November 16, 1993Inventor: Patrick C. Fitzpatrick
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Patent number: 5260674Abstract: 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: GrantFiled: August 4, 1992Date of Patent: November 9, 1993Assignee: Acrodyne Industries, Inc.Inventor: Timothy P. Hulick
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Patent number: 5259221Abstract: 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: GrantFiled: March 6, 1992Date of Patent: November 9, 1993Assignee: Long Manufacturing Company, Inc.Inventor: Phillip Whitmore
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Patent number: 5260586Abstract: 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: GrantFiled: November 13, 1992Date of Patent: November 9, 1993Assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics Co., Ltd.Inventors: Hiroshi Kondoh, Kiyoshi Yamaguchi, Yasuhiro Osawa
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Patent number: 5258780Abstract: 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: GrantFiled: May 2, 1991Date of Patent: November 2, 1993Assignee: Ricoh Company, Ltd.Inventors: Hidetoshi Ema, Hitoshi Hattori, Masaaki Ishida, Susumu Imakawa, Yoshinobu Takeyama
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Patent number: 5257742Abstract: 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: GrantFiled: May 1, 1992Date of Patent: November 2, 1993Assignee: Fimatec Ltd.Inventors: Saburoh Yashima, Sadayuki Naitoh, Hiroyuki Takahashi, Manabu Abe
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Patent number: 5258594Abstract: 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: GrantFiled: July 8, 1991Date of Patent: November 2, 1993Inventors: Rene Pioch, deceased, by Sylvie Pioch, heir, by Colette Cahulau, heir, by Isabelle Pioch, heir, by Evelyne Pioch, heir, by Olivier Pioch, heir
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Patent number: 5256411Abstract: 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: GrantFiled: June 28, 1991Date of Patent: October 26, 1993Assignee: Intermune Life Sciences, Inc.Inventors: Anthony E. Bolton, Alan Drizen
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Patent number: 5253595Abstract: 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: GrantFiled: March 5, 1993Date of Patent: October 19, 1993Assignee: Steelcase Strafor (S.A.)Inventor: Charles Heidmann
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Patent number: 5254528Abstract: 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: GrantFiled: August 29, 1991Date of Patent: October 19, 1993Assignee: Koyo Seiko Co., Ltd.Inventor: Ryoichi Takahata
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Patent number: 5253953Abstract: 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: GrantFiled: December 10, 1991Date of Patent: October 19, 1993Inventor: Malcolm B. Whidden, Jr.
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Patent number: 5253733Abstract: 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: GrantFiled: August 18, 1992Date of Patent: October 19, 1993Assignee: Koyo Seiko Co., Ltd.Inventor: Takeshi Miyachi
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Patent number: 5253080Abstract: 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: GrantFiled: August 26, 1991Date of Patent: October 12, 1993Assignee: Ricoh Company, Ltd.Inventors: Shinichi Nishimura, Hiroyuki Kudose, Shingo Yamaguchi
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Patent number: 5251543Abstract: 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: GrantFiled: March 26, 1992Date of Patent: October 12, 1993Assignee: The Original Honey Baked Ham Company of Georgia, Inc.Inventor: Daniel L. Brothers
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Patent number: D340646Type: GrantFiled: October 9, 1991Date of Patent: October 26, 1993Assignee: Maison JeanjeanInventor: Bernard Jeanjean
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Patent number: D341326Type: GrantFiled: April 25, 1991Date of Patent: November 16, 1993Assignee: Societe nouvelle Chaumet, S.A.Inventor: Xavier Rousseau
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Patent number: D341583Type: GrantFiled: July 5, 1990Date of Patent: November 23, 1993Assignee: Transaction Technology, Inc.Inventors: Ernest Bevilacqua, David Conroy, William Doyle, Robert Haddock, Anne Lang, Joseph Moya, Arthur Nichols, Carl Thompson
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Patent number: D341684Type: GrantFiled: October 14, 1992Date of Patent: November 23, 1993Assignee: Frank L. WallInventors: Edward L. Wall, Frank L. Wall, Paul E. Beale