Patents Examined by Parshofam S. Lall
  • Patent number: 4109626
    Abstract: A feedback fuel pipe is provided, between a fuel reservoir and a portion of a main fuel pipe communicating with a discharging nozzle, for controlling the amount of fuel fed back to the fuel reservoir, which control is actually performed by valve means which is provided in the feedback fuel pipe and responsive to a signal representing at least one engine operating condition.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: August 29, 1978
    Assignee: Nissan Motor Company, Limited
    Inventors: Shigeo Aono, Makoto Anzai
  • Patent number: 4109627
    Abstract: Flyweights develop sufficient centrifugal force to overcome the preload of a high speed governor spring when the speed of an internal combustion engine is above a predetermined maximum value to move a fuel control rod to decrease the amount of fuel injection and reduce the engine speed to the maximum value. The flyweights develop insufficient centrifugal force to overcome the preload of a low speed governor spring when the engine speed drops below a predetermined minimum value and the low speed governor spring moves the flyweights and thereby the fuel control rod to increase the amount of fuel injection and increase the engine speed to the minimum value. A manual speed control member moves the fuel control rod to control the engine speed between the minimum and maximum values.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: August 29, 1978
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Mitsuo Uchino, Seizi Takahashi
  • Patent number: 4109628
    Abstract: A governor mechanism for a fuel injection pump is of the type having interacting fly-weights and a main governor spring for regulating engine speed, and means are included for selectively changing the spring rate of the main governor spring to change the regulation of the governor.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: August 29, 1978
    Assignee: Caterpillar Tractor Co.
    Inventors: Robert H. Miller, Harold C. Davidson
  • Patent number: 4098243
    Abstract: An ignition timing control system comprises a sensor for detecting a reference point of the crankshaft of an internal combustion engine in synchronism with the rotation of the crankshaft, a speed detector for detecting the rotational speed of the crankshaft, a processor responsive to an interruption request by the reference signal from the sensor for temporarily stopping the computational operation being executed at that time and computing a time period from the time of the interruption request to the point of ignition in accordance with a desired spark advance value and the speed signal from the speed detector to produce the corresponding computed value, and an ignition command circuit for applying an ignition command signal to the ignition system of the engine at the expiration of a time corresponding to the computed value from the processor.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: July 4, 1978
    Assignee: Nippondenso Co., Ltd.
    Inventors: Hiroshi Yoshida, Kiyokazu Konishi
  • Patent number: 4075997
    Abstract: A spark ignition system includes a variable reluctance pick-up providing the input signal to a saturating amplifier which includes a feedback path constituted by a capacitor and a resistor in series. This amplifier has a transfer function while it is being driven towards saturation, such that its output is the sum of an integral part and a proportional part and does not saturate as a result of oscillatory high frequency spurious signals since these have a low integral. A resistor in the input of the amplifier is shorted out by a diode connected transistor when the polarity of the signal from the pick-up reverses, to increase the gain of the amplifier while it is being driven towards de-saturation, such change of polarity signalling production of a spark.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: February 28, 1978
    Assignee: Lucas Electrical Co., Limited
    Inventor: William Frank Hill
  • Patent number: 3951011
    Abstract: An hydraulic control system for an automatic transmission having a plurality of friction engageable devices to produce a plurality of drive ratios by selective engagement thereof, two of the engageable devices comprising friction brakes engageable to establish a second speed drive ratio through the transmission, and conduit means connecting a source of pressure to each of the brake devices and to an hydraulic accumulator. The conduit means has a first branch connected to one of the brake devices, a second branch connected to a second of the brake devices, and a logic valve is provided in the conduit means between the branches adapted to interconnect the branches and the respective servomotors for engaging the brake devices, providing equalization of the pressures at the brake devices whereby they are engaged with identical engaging force.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: April 20, 1976
    Assignee: Borg-Warner Corporation
    Inventor: Robert W. Lemon
  • Patent number: 3938408
    Abstract: An improved differential drive mechanism includes a clutch assembly which is engaged to retard relative rotation between driving and driven members. A clutch actuator assembly includes a pair of flyweights which are rotated at a speed which varies as a function of variations in the speed of relative rotation between the driving and driven members. The flyweights are hinged to move outwardly under the influence of centrifugal force as they are rotated. To prevent excessive loading on hinge connection at high rotational speeds, outward movement of the flyweights is limited by a pair of stop members which engage outer surfaces of the flyweights. The flyweights are pivotally mounted on the stop members and the torque for rotating the flyweights is transmitted from an input shaft to the flyweights through the stop members. To prevent overloading of a flyweight drive mechanism, secondary clutches are provided between the stop members and input shaft.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: February 17, 1976
    Assignee: Eaton Corporation
    Inventor: Jerry F. Baremor
  • Patent number: 3933052
    Abstract: A pressure compensated, hermetically sealed transmission system is described which includes, basically, a hermetic rotary coupling. Rotary motion is applied through a casing, wherein a cylindrically shaped input shaft having a circular inner bearing race affixed to one end is coupled to a generally spherical shaped wobble plate by means of roller or ball bearings. In similar fashion, an output shaft is similarly coupled to the spherical shaped wobble plate at the opposite end. The inner races of the shafts are positioned at an angle and located eccentrically from the respective shaft center line. Both shafts are supported at their outer ends by combination journal thrust bearings, which are coupled to the main casing. The wobble plate is prevented from rotating about the common axis of the two shafts. Thus, as one shaft rotates, the wobble plate rocks, due to ball bearing action, but does not rotate. Likewise, due to the bearing action, as the wobble plate rocks the output shaft rotates.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: January 20, 1976
    Inventor: Carl R. Coles