Patents Examined by W. E. Duncanson, Jr.
  • Patent number: 4835405
    Abstract: A generator set including an internal combustion engine which drives an alternator or generator to generate electricity. The engine and the generator are air cooled by air driven by a fan along two parallel air cooling circuits through the generator set. The components of the set are enclosed in a two-piece housing or enclosure having two openings, an air inlet and an air outlet.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: May 30, 1989
    Assignee: Onan Corporation
    Inventors: Stephen M. Clancey, Stanely D. Hjelmstad, Mark S. Lent, Michael C. Miller
  • Patent number: 4832159
    Abstract: An elevator control apparatus in which a stop position command signal for floor arrival at each floor is generated irrespective of the position of a plate; comprising cage position-calculation means for calculating the current position of a cage on the basis of the movement value of the cage, floor height value-memory means for storing the floor heights of respective floors, stop position command signal-calculation means for calculating the stop position command signal for each floor on the basis of the current position of the cage and the height value, and memory write/read means for adjusting the error of the stop position command signal ascribable to the deviation of the plate by rewriting offset data defined in correspondence with each floor.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: May 23, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Satomi Ikejima, Shigemi Iwata
  • Patent number: 4832158
    Abstract: An elevator system has a door operator with a door operator motor and a dedicated microprocessor for storing door open and door close cycles. The microprocessor initiates door open and close cycles responsive to external door open and door close commands. Preferably the microprocessor stores a plurality of door closed cycles in which the elevator controller selects one of the cycles when issuing a door closed command.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: May 23, 1989
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Dennis J. Farrar, Mark H. Duckworth
  • Patent number: 4833380
    Abstract: In an elevator system in which the elevator cars are moved by a hoist motor with a brake and the hoist motor is energized by controls to cause energization of the motor, movement of a car and release of the brake, motor protecting circuits which are time rather than current magnitude responsive. One protective circuit includes a time delay relay which is activated upon energization of the motor and which causes deenergization of the motor if the motor is energized longer than the time it normally takes a car to travel from the lower floor to the upper floor or vice versa. The other protective circuit includes a time delay relay which is activated when the motor is energized and the brake fails to release and which cause deenergization of the motor if the brake fails to release within a predetermined time. Either circuit may be used alone. Also, an indicator to indicate operation of a time delay to deenergize the motor.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: May 23, 1989
    Inventor: John E. Magee
  • Patent number: 4831277
    Abstract: A power system specifically adapted to provide DC power for powering a DC load at a remote site under severe environmental conditions, such as is found at remote gas pipeline locations. The power system includes a slow speed heat engine adapted to be powered by fuel, preferably taken directly from the gas pipeline, the supply of which is controlled by means of a pressure regulator. The engine is adapted to be directly coupled to an oversized, slow speed three-phase alternator so as to produce AC power, which is subsequently rectified to DC power output for powering a load in the range of 500 to 5,000 watts. The engine is particularly adapted to be started with a hand crank or a portable starter, and is provided with ceramic main bearings, an oversized lubrication system, redundant independent ignition systems and a highly superior cooling system.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: May 16, 1989
    Inventor: Nicholas S. Christopher
  • Patent number: 4828075
    Abstract: An elevator control apparatus suppresses the jerk at the start-up of speed controlled elevator installations in both directions of travel, not only the friction jerk at the transition from the static friction to the sliding friction, but also the imbalance jerk at unbalanced car loads. A set point signal multiplier is connected to the output side of a set point memory in the hoist motor drive control and the set point multiplying factor can be controlled by way of an on/off circuit. The multiplier is switched, prior to the start of the movement, by the on/off circuit to a value greater than one, and is switched back to one at start of movement in the direction of travel. The motor driving force is controlled to a value which, when summed with the imbalance force, is equal to the sliding friction force at start-up. This suppression of jerks is eminently suitable for the refitting of controlled elevator drives and increases, due to the earlier start of movement, their elevating capacity.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: May 9, 1989
    Assignee: Inventio AG
    Inventors: Klaus-Jurgen Klingbeil, Horst Woyciel
  • Patent number: 4829195
    Abstract: An overhang type starter is arranged such that a pinion provided at the front end of a driving shaft is provided in a position ahead of a bearing which supports the shaft rotatably. The driving shaft has an annular projection formed thereon at a position close to the pinion, the annular projection being slidably supported by a bearing. Since the driving shaft is supported by the annular projection thereof, when the shaft is advanced to its operative position, it is supported at the same point as in the case when the shaft is in a retracted position, and therefore no change occurs in the amount of overhang of the pinion. Accordingly, deflection of the driving shaft and the rotary output shaft is minimized.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: May 9, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Kazuo Takami
  • Patent number: 4829196
    Abstract: The pressure of fluid supplied by a high-pressure line is reduced to a lower pressure suitable for a low-pressure utilization device located in an environment having an electrical grid by interposing a fluid motor between the high-pressure line and the low-pressure utilization device such that operation of the latter causes the high-pressure fluid to operate the motor and to exhaust into the utilization device. The fluid motor drives an asynchronous generator whose output is connected to the electrical grid through a switch whose state is normally open. The switch is maintained in a closed state only during operation of the motor by providing, for example, a pressure sensor in the exhaust of the motor for sensing the passage of fluid through the motor.
    Type: Grant
    Filed: July 22, 1981
    Date of Patent: May 9, 1989
    Assignee: Ormat Turbines (1965) Ltd.
    Inventors: Lucien Y. Bronicki, Gerard Lehman
  • Patent number: 4827148
    Abstract: An improved vehicle reverse control system having a power circuit for a starter motor for starting an engine. The circuit may include a control element for controlling the starter motor, in combination with separate control elements for starting the engine and for controlling reverse operation, at least one of which may be located on or near the operator's handle grip. The circuit may also include an element which detects reverse operation and an element which suppresses the starter motor whenever the vehicle is operated in reverse. The circuit may also include an element for detecting when the engine is operating and an element for disabling reverse operation of the starter motor when the engine is operating. The circuit may also include elements for suppressing engine start and for suppressing reverse operation, disposed so that the starter motor may be controlled for only one of the two operations at a time.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: May 2, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroaki Hirosawa, Atsuo Ohta, Morio Sato
  • Patent number: 4825095
    Abstract: An engine starter motor includes a stopper member having an outer diameter larger than an outer diameter of an output shaft of the starter motor and adapted to be detachably threaded to a front end portion of the output shaft, a front end of the stopper member being behind a front end of a pinion when fully retracted, a land portion formed on an inner surface of the pinion, the land portion being engaged with a rear end of the stopper member when the pinion is moved forwardly by a predetermined distance, and a bearing fixedly supported by the inner surface of the pinion and supporting the output shaft slidably, the bearing being positioned to receive a reactive force exerted on the output shaft.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: April 25, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Morishita, Shuzo Isozumi
  • Patent number: 4823914
    Abstract: A monitor system for use with a plurality of segregated groups of controls, each group having corresponding status control lines indicative of the operational status of an elevator, an escalator, or the like. The monitor system includes a series of monitor devices for responding to the status control lines. Each one of the monitor devices corresponds to an individual one of the group of controls, for diagnosing the operational problems associated therewith. A computing device is located remotely from the groups of controls, for monitoring them remotely and continuously. A plurality of individual single communication links correspond individually to one of the monitor devices, for facilitating connection selectively and individually of the monitor devices to the remote computing device.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: April 25, 1989
    Assignee: Elevator Performance Technologies, Inc.
    Inventors: Robert C. McKinney, Lloyd F. Perry, Scott T. Boden
  • Patent number: 4824149
    Abstract: The aim of the invention is to improve upon conventional electricity generator sets consisting of a driven generator with relatively complex couplings and possibly a gear box transmission between the crank shaft and the generator.In accordance with the invention the engine is a stirling or hot gas engine with at least four double acting cylinders, each of whose pistons placed between a hot and a cold cycle space is connected with a piston rod on a cross head linearly guided in a cross head guide and coupled via coupling member, more especially one in the form of a connecting rod, with a crank shaft. Furthermore the moving elements--permanent magnets or exciting windings--of a linear generator are located in each cross head and the stationary parts--stators--are arranged on the associated cross head guide. The crank shaft and linking members only serve to synchronize the working cycles of the engine and are therefore only designed for light duty.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: April 25, 1989
    Assignee: MAN Technologie GmbH
    Inventor: Gunter Reuchlein
  • Patent number: 4819975
    Abstract: An engine starter motor comprises a d.c. motor and a transmission device of high reduction ratio, the d.c. motor having an output shaft connected through the transmission device to an input shaft of an engine. The transmission device includes a wave generator connected to the output shaft of the d.c. motor, an internal gear 20; 48 formed integrally with a housing of the d.c. motor, and a flexible gear 21; 45 having an output shaft connected to the input shaft of the engine and meshing with the internal gear.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: April 11, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Morishita, Toshinori Tanaka
  • Patent number: 4819766
    Abstract: In a group supervisory system for outdoor observatory elevators according to the present invention, idle elevator cages wait at various floors in a functionally and esthetically pleasing pattern. Cages waiting at upper floors for a predetermined time are directed by a predetermined floor-removing circuit to move from the upper floors. The circuit then directs the cages to return to the upper floors. Compensating ropes or travelling cables of stationary cages at high floors may be exposed to air currents long enough to begin swaying back and forth and collide with devices or implements in the shaft. To prevent these collisions from taking place, the group supervisory system periodically directs the cages to move. More specifically, when a cage has waited at the upper floor for a predetermined time, the system registers the cage to a hall call from a lower floor. In response, the cage moves down to a lower floor. Later, the system directs the cage to move back up to the upper floor.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: April 11, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Takaharu Saito
  • Patent number: 4818889
    Abstract: A stopper member in the form of a pin or pins or a pair of ring halves having inner teeth is fixedly supported by a thrust spline and meshes with engaging grooves having a definite length and formed on an output portion of a planet shaft to limit an axial movement of a pinion.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: April 4, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Takashi Kinoshita
  • Patent number: 4817761
    Abstract: A control apparatus for an elevator according to this invention comprises a signal setter for setting a new value instead of a value of great variation when at least one signal at the present time among a transmission reference speed command signal transmitted to a speed controller through a transmission interface, a cage speed signal, and a controlled variable based on these signals greatly varies as compared with the time-serial value of the corresponding signal detected in the past.In this invention, the signal setter stores a value at the present time and also stores serially past values with respect to time as to the transmitted reference speed command signal, the cage speed signal, or the controlled variable based on these signals, and it sets the new value not greatly varying, as a present value if the value at the present time greatly varies in view of the past serial values of the corresponding signal. Accordingly, even if any of the transmission interface, cage speed signal-detector, etc.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: April 4, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigemi Iwata, Hiroyuki Ikejima
  • Patent number: 4816697
    Abstract: The present apparatus is a hydroelectric power device for generating energy from currents of water. It includes a blade spiraling about a spindle or shaft which is connected to a generator. The rotation of the blade and shaft is converted by the generator into energy.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: March 28, 1989
    Inventors: Nikolaes A. Nalbandyan, Grigor A. Nalbandyan, Harutyun G. Nalbandyan
  • Patent number: 4815568
    Abstract: An elevator control system employing a micro-processor-based group controller (FIG. 2) which communicates with the cars (3, 4) of the elevator system to determine conditions of the cars and responds to hall calls registered at a plurality of landings in the building serviced by the cars under control of the group controller, to provide assignments of the hall calls to the cars based on the summation for each car, with respect to each call, a weighted summation of a plurality of system response factors, some indicative, and some not, of conditions of the car irrespective of the call to be assigned, assigning "bonuses" and "penalties" to them in the weighted summation.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: March 28, 1989
    Assignee: Otis Elevator Company
    Inventor: Joseph Bittar
  • Patent number: 4815567
    Abstract: An apparatus for controlling an A.C. powered elevator is provided to reduce a primary current frequency to an induction motor to be smaller than a specific value when the motor is switched from a power drive to a brake mode of operation. In other words, the frequency after the motor is switched to the brake mode is reduced to be lower than the frequency at which the machine input power to the induction motor is equal to the internal power consumption of the induction motor.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: March 28, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroyuki Ikejima
  • Patent number: 4808835
    Abstract: A power generation cassette type power plant for marine electric propulsion includes a multiplicity of power generation units each being formed as a power generation cassette including a power generator, a prime mover, for example an internal combustion engine for driving the power generator and a support structure for supporting the power generator and the engine internally. The support structure is formed in the same shape as that of a container for transporting cargo. When the power generators of the multiplicity of power generation units are operated in parallel to each other to supply electric power to a load, controllers serve to share the load to the generators properly.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: February 28, 1989
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Masanari Tsuji, Yuji Tani, Akira Zaitsu, Kojiro Shimamoto, Masaaki Hashii, Ikuo Donoue, Hiromi Suzuki, Yoshihito Sakakibara