Patents Represented by Attorney, Agent or Law Firm George P. Pappas
  • Patent number: 6477998
    Abstract: A cam actuated continuous simultaneously variable valve timing and lifting assembly for selectively operating the valve of an internal combustion engine. The valve is actuated by a cam on a camshaft driven by a crankshaft. The cam is in operative engagement with a slider. The slider is selectively movable by a slider actuator within a rocker arm. The slider actuator is selectively extended and retracted by a first motor drive unit. A computer controller operatively controls the motor drive unit to selectively and simultaneously vary the timing and lifting of the valve. A modification of the invention is provided with a second motor drive unit provided with a downwardly extending hexagonal transfer shaft drive assembly having a downwardly extending spherical ball which operatively engages a rocker arm assembly provided with a slider thereon to accommodate the movement of the slider as needed.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: November 12, 2002
    Inventor: Chinh T. Nguyen
  • Patent number: 6446589
    Abstract: A variable valve timing and lift assembly for operating a valve of an internal combustion engine. The valve is actuated by a cam on a camshaft driven by a crankshaft. The cam is in operative engagement with a slider. The slider is selectively movable by a slider actuator within a rocker arm slider opening of a rocker arm. The slider actuator is selectively extended and retracted by a motor drive unit. A computer controller operatively controls the motor drive unit to vary the timing and lift of the valve.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: September 10, 2002
    Inventor: Chinh T. Nguyen
  • Patent number: 6155369
    Abstract: An electric bicycle assembly provided with a lightweight, high performance DC electric motor and a tuned centrifugal slip clutch assembly in combination therewith. This bicycle assembly includes a two-stage start-run electric control circuitry which prevents high motor zero rpm in-rush currents which may damage the motor. Another embodiment of this invention utilizes a variable ratio V-belt drive assembly having a centrifugal clutch capability so as to engage and disengage at a predetermined RPM. Another embodiment of this invention is provided with a front wheel mounted regenerating wheel rotor assembly which is adapted to recharge batteries as needed. Another embodiment of this invention utilizes a mechanically actuated multi-stage power control switch so as to selectively provide a start circuit and two or more power control levels in the operational use thereof.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: December 5, 2000
    Inventor: Ronald W. Whittaker
  • Patent number: 4657132
    Abstract: A waist mountable cartridge holder assembly comprising a cartridge case having integrally formed base, foldable hinge and cover portions. A cartridge holder track support member is provided on the base portion so as to snap clampably supportably engage a plurality of individual cartridges in transversely oriented spaced-apart longitudinally aligned fixed positions above the base portion so as to enable finger access between the base and the individual cartridges so as to facilitate direct unloading of individual cartridges therefrom. The case cover portion is selectively foldable onto the base portion so as to cover the cartridge holder track support member and cartridges supported thereon. A snap tab lock is provided to extend from the base portion to lockably engage the cover portion in its closed position.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: April 14, 1987
    Inventor: Saide Abdo
  • Patent number: 4614343
    Abstract: A golf swing training device comprising an elongate golf club shaft provided with a golf club hand grip at the upper end thereof and a weighted mechanical head assembly fixedly connected to the lower end thereof. The shaft is connected to the mechanical head assembly by an improved connector assembly. The mechanical head assembly comprises a spring biased weighted cartridge member positioned within a barrel housing and provided with snap ring-engaging fingers extending outwardly through slots provided in the barrel housing. The barrel housing is provided with an adjustable head closure member at the lower end thereof which is adapted to selectively increase or decrease tension of the cartridge-engaging main spring contained in the barrel housing. A cartridge-engaging main spring is positioned within the barrel housing by use of upper and lower locator bearings.
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: September 30, 1986
    Assignee: Snapper, Inc.
    Inventor: Ronald F. Radway
  • Patent number: 4594785
    Abstract: A disc brake caliper piston diagnostic gauge for the in situ testing and monitoring of a caliper piston which consists of a dial gauge having an externally threaded probe stem housing which extends outwardly therefrom into close proximity to a caliper piston when the gauge is in its operative position on a caliper housing. An anchor plate is threadably mounted upon the stem housing so as to be in abutting engagement with the inside surface of the outboard caliper housing when the gauge is in its operative position upon a caliper housing. A bias spring assembly is provided in threadable engagement with the stem housing so as to be adapted for selective operative engagement with a caliper piston. A contact indicator probe is provided which extends from the dial gauge through the stem housing member into operative engagement with the caliper piston so as to monitor the movement of the caliper piston and to translate the movement of the caliper piston into a visual indication on the dial gauge.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: June 17, 1986
    Inventor: Herman L. Carlson
  • Patent number: 4531562
    Abstract: An interior window cover assembly is provided for selective insulating sealable closure of a window opening so as to prevent air infiltration and reduce heat transfer therethrough. The window cover assembly is provided with a pair of vertically oriented spaced-apart track assemblies adapted for opposed sealable engagement with the vertical sides of a window frame. A horizontally oriented spring-actuated window cover roller assembly is pivotally mounted across the top of a window frame in abutting engagement with the upper ends of the track assemblies. A flexible insulating window cover member having a sill closure bar across the bottom thereof is selectively extendable downwardly from the window cover roller assembly so as to cover the window opening. The vertical edge portions of the flexible cover member extend into grooves provided in the track assemblies and are movable therealong as the sill closure bar is moved downwardly to draw the window cover member over the window opening.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: July 30, 1985
    Assignee: Chemstyle, Inc.
    Inventor: C. D. Swanson
  • Patent number: D280600
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: September 17, 1985
    Assignee: Dart Container Corporation
    Inventor: John W. Earl
  • Patent number: D285410
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: September 2, 1986
    Inventor: Robert R. Webber
  • Patent number: D285967
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: September 30, 1986
    Assignee: Saginaw Automation & Machine, Inc.
    Inventor: William J. Murphy