LASH ADJUSTMENT BETWEEN ROLLERS AND A CAM PLATE OF A BARREL ENGINE
First Claim
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1. A lash adjustment system for a roller in a barrel engine of the type having a plurality of combustion chambers each having a piston movable along a piston axis, the lash adjustment system comprising:
- a cam plate having a track portion for a roller, the track portion having a first surface, a second surface, a thickness between the first and second surface, an inner side, an outer side, and a width between the inner side and the outer side;
a first roller in mechanical communication with the first surface of a cam plate track portion to allow rotational engagement of a roller surface with the first surface of the cam plate track portion, the first roller having a rotational axis and a frustoconical shape defining a base portion of the first roller having a larger cross-sectional diameter compared to a top portion of the first roller; and
a force applying mechanism in mechanical communication with the first roller, the mechanism operable to move the first roller along the rotational axis so as to reduce lash between the first roller and the first surface of the cam plate.
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Abstract
A lash adjustment system for a roller is provided which includes a cam plate surface and a frustoconically shaped roller in mechanical communication with the surface. Means for moving the roller relative to the surface are included to urge the roller inwardly with respect to the cam plate in order to reduce lash.
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Citations
10 Claims
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1. A lash adjustment system for a roller in a barrel engine of the type having a plurality of combustion chambers each having a piston movable along a piston axis, the lash adjustment system comprising:
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a cam plate having a track portion for a roller, the track portion having a first surface, a second surface, a thickness between the first and second surface, an inner side, an outer side, and a width between the inner side and the outer side; a first roller in mechanical communication with the first surface of a cam plate track portion to allow rotational engagement of a roller surface with the first surface of the cam plate track portion, the first roller having a rotational axis and a frustoconical shape defining a base portion of the first roller having a larger cross-sectional diameter compared to a top portion of the first roller; and a force applying mechanism in mechanical communication with the first roller, the mechanism operable to move the first roller along the rotational axis so as to reduce lash between the first roller and the first surface of the cam plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for reduction of lash between a roller and a surface in a barrel engine of the type having a plurality of combustion chambers each having a piston movable along a piston axis, the method comprising:
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providing a system comprising a cam plate having a track portion for a roller, the track portion having a first surface, a second surface, a thickness between the first and second surface, an inner side, an outer side, and a width between the inner side and the outer side; providing a first roller in mechanical communication with the first surface of a cam plate track portion to allow rotational engagement of a roller surface with the first surface of the cam plate track portion, the first roller having a rotational axis and a frustoconical shape; and providing a force applying mechanism in mechanical communication with the first roller, wherein lash is present between the first roller and the first surface of the cam plate; and applying force to a first roller with the force applying mechanism so as to move the first roller along the rotational axis, such that lash between the first roller and the first surface of the cam plate is reduced.
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10. A lash adjustment system for a roller in a barrel engine of the type having a plurality of combustion chambers each having a piston movable along a piston axis, the lash adjustment system comprising:
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a cam plate having a track portion for a roller, the track portion having a first surface, a second surface, a thickness between the first and second surface, an inner side, an outer side, and a width between the inner side and the outer side; a first roller supported on a shaft for rotation about a rotational axis, the first roller being in mechanical communication with the first surface of a cam plate track portion to allow rotational engagement of a roller surface with the first surface of the cam plate track portion, the first roller having a frustoconical shape defining a base portion of the first roller having a larger cross-sectional diameter compared to a top portion of the first roller; and a force applying mechanism in mechanical communication with the first roller, the mechanism operable to move the first roller along the rotational axis so as to reduce lash between the first roller and the first surface of the cam plate.
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Specification