Patents by Inventor Duane J. Bonvallet

Duane J. Bonvallet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5806875
    Abstract: A system for damping and/or stiffening a ski having a damping member and a stiffening member which are engageable and disengageable through the operation of a clutch. The clutch is engaged by a change in a threshold condition, such as a shift in the skier's weight during skiing. Engagement of the clutch engages the clamping member and/or stiffening member. The system maintains the damping member and/or stiffening member in a disengaged condition until the skier commences a turn, engages the damping member and/or the stiffening member during the turn, and disengages the damping member and/or the stiffening member once the turn is completed.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: September 15, 1998
    Assignee: Marker Deutschland GmbH
    Inventor: Duane J. Bonvallet
  • Patent number: 5779257
    Abstract: A system for damping and/or stiffening a ski having a damping member and a stiffening member which are engageable and disengageable through the operation of a switch member. The switch member is engaged by a change in a threshold condition, such as a shift in the skier's weight during skiing. Engagement of the switch member engages the damping member and/or stiffening member. The system maintains the damping member and/or stiffening member in a disengaged condition until the skier commences a turn, engages the damping member and/or the stiffening member during the turn, and disengages the damping member and/or the stiffening member once the turn is completed.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: July 14, 1998
    Assignee: Marker Deutschland GmbH
    Inventors: Duane J. Bonvallet, Jeffrey R. Bonvallet, John C. Bonvallet
  • Patent number: 5681054
    Abstract: A system for damping and/or stiffening a ski having a damping member and a stiffening member which are engageable and disengageable through the operation of a clutch. The clutch is engaged by a change in a threshold condition, such as a shift in the skier's weight during skiing. Engagement of the clutch engages the damping member and/or stiffening member. The system maintains the damping member and/or stiffening member in a disengaged condition until the skier commences a turn, engages the damping member and/or the stiffening member during the turn, and disengages the damping member and/or the stiffening member once the turn is completed.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: October 28, 1997
    Assignee: Marker Deutschland GmbH
    Inventor: Duane J. Bonvallet
  • Patent number: 5579570
    Abstract: An apparatus for preloading a bearing set that supports a pinion shaft in a differential gear assembly includes a low torque drive assembly for rotating the pinion shaft connected to a high torque drive assembly for tightening a pinion nut. A sensor assembly measures the drag torque of the rotating pinion shaft as the pinion shaft nut is being tightened to indicate bearing preload.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: December 3, 1996
    Assignee: Trio Tool Company
    Inventor: Duane J. Bonvallet
  • Patent number: 5207448
    Abstract: An inertia compensated step-in type ski binding for releasably securing a ski boot to a ski. The binding releases the boot from the ski when the lateral force imposed on the binding by the toe of the ski boot reaches a predetermined level. The ski binding includes a mass which function to generate a force within the binding which is equal to and opposite the force generated by the lateral acceleration of the boot mass so as to eliminate lateral acceleration as a factor in release.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: May 4, 1993
    Inventor: Duane J. Bonvallet
  • Patent number: 4777915
    Abstract: A housing on the cylinder head of an engine operatively supports an upper solenoid and a tubular lower solenoid such that therein working pole faces are opposed to each other for operatively effecting movement of an armature fixed to the free stem end of a poppet valve having its stem extending up through the lower solenoid. Upper and lower springs each have one end thereof positioned in the upper and lower solenoids, respectively, and the lower solenoid has an actuator operatively connected thereto to effect axial position of the lower solenoid relative to the upper solenoid, while the upper solenoid has a lash adjuster operatively associated therewith.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: October 18, 1988
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4724822
    Abstract: A variable valve lift and timing valve train mechanism includes a rocker arm having one end thereof operatively engaged by a valve actuator, a reaction member having one end thereof engaging an eccentric which can be rotated to change the angular position of the reaction member; a hydraulic lash adjuster including a plunger being operatively positioned in spaced apart relationship relative to the free stem end of an associate valve and substantially coaxial therewith, the plunger having an outboard pivot end projecting toward the stem of the valve, an opposite end of the rocker arm or reaction member pivotably engaging the stem of the valve while the other end pivotably engages the outboard pivot end of the plunger.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: February 16, 1988
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4711207
    Abstract: A valve deactivator mechanism includes a flanged valve actuator that is operatively connected to a conventional spring biased poppet valve, either intake or exhaust, and which is slidably received in a flanged cam follower adapted to be reciprocated by an engine driven camshaft, a spring being operatively positioned to normally bias the flanges of the cam follower into engagement with each other and, a solenoid coil is operatively positioned such that when it is energized the flange of the valve actuator acting as an armature is electromagnetically coupled to the flange of the cam follower that operates as a solenoid pole piece whereby the cam follower actuates the valve actuator to control the opening and closing movement of the poppet valve and, when the solenoid coil is deenergized the valve actuator is uncoupled from the cam follower whereby the poppet valve is deactivated.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: December 8, 1987
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4638773
    Abstract: A variable valve lift and timing valve train mechanism includes a rocker arm having one end thereof operatively engaging a valve and its opposite end being engaged by a valve actuator, the upper surface of the rocker arm intermediate its ends having a predetermined cam surface profile which is adapted to cooperate with a working surface of an angular movable upper reaction member so as to provide a fulcrum to effect pivotal movement of the rocker arm in a valve opening direction. The point of line contact between the cam surface of the rocker arm against the working surface of the upper reaction member and the geometry of the upper surface of the rocker arm cooperate to control the amount of valve lift and its timing.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: January 27, 1987
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4543920
    Abstract: A valve train for a reciprocating internal combustion engine has a fulcrum means provided by the follower body of a hydraulic lash adjuster and a rocker arm that define a pair of cooperating outer and inner cylindrical bearing surface contours, respectively, for carrying the reaction forces of rocker arm pivotal movement, the radius of the outer conformation being substantially two times the radius of the inner conformation, with the geometric center of the outer conformation being located within the effective cross sectional area of the stem of an associate valve, the inner conformation of the rocker arm being located such that an extension thereof will intersect the contact point of the rocker arm on the stem end of the valve. Restrainer means are provided to anchor the cooperating cylindrical conformations for substantially rolling action in relation to each other.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: October 1, 1985
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4491099
    Abstract: A valve train for a reciprocating internal combustion engine has a fulcrum means and a rocker arm that define a pair of cooperating outer and inner cylindrical bearing surface contours, respectively, for carrying the reaction forces of rocker arm pivotal movement, the radius of the outer conformation being substantially two times the radius of the inner conformation, with the center of revolution of the outer conformation being located on the operating axis of the valve, the inner conformation of the rocker arm being located such that an extension thereof will intersect the contact point of the rocker arm on the axis of the valve at the free end thereof or on a lifter positioned between the rocker arm and valve. Restrainer means are provided to anchor the cooperating cylindrical conformations for substantially rolling action in relation to each other.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: January 1, 1985
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4476822
    Abstract: A valve train for a reciprocating internal combustion engine has a fulcrum means and a rocker arm that define a pair of cooperating outer and inner cylindrical bearing surface contours, respectively, for carrying the reaction forces of rocker arm pivotal movement, the radius of the outer conformation being substantially two times the radius of the inner conformation, with the center of revolution of the outer conformation being located on the operating axis of the valve, the inner conformation of the rocker arm being located such that an extension thereof will intersect the contact point of the rocker arm on the axis of the valve at the free end thereof.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: October 16, 1984
    Assignee: General Motors Corporation
    Inventor: Duane J. Bonvallet
  • Patent number: 4277084
    Abstract: An acceleration compensated step-in type ski binding for releasably securing a ski boot to a ski. The ski binding includes a pivotable body member mounted on a support plate attached to the ski which engages the boot on one side of a pivot and carries a mass on the opposite side of the pivot. The mass generates a moment equal and opposite to the moment generated by the acceleration of the boot so as to cancel out the internal forces resulting from such acceleration of the boot. The ski binding further includes a boot engagement assembly for engaging a first portion of the ski boot.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: July 7, 1981
    Inventor: Duane J. Bonvallet
  • Patent number: 4129245
    Abstract: A ski binding having a retaining device which secures a skier's boot to a ski. The retaining device releases the boot when the lateral, longitudinal, and/or upward forces acting between the ski and the boot reach a predetermined level. The retaining device includes means which function to generate a force which is equal to and opposite to the force generated by the acceleration of the boot mass in the lateral and/or vertical directions so as to cancel out the internal forces resulting from such accelerations and thereby eliminate the premature release of the ski bindings.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: December 12, 1978
    Inventor: Duane J. Bonvallet