Lapping machine
AssigneeP.R. Hoffman Machine Products Inc.
InventorMark A. Godshall
Life of this patent
Estimating the term…
Abstract
A lapping machine includes upper and lower lapping wheels and a sprocket having a common centered rotational axis. A rotational drive source for at least one of the upper and lower lapping wheels provides rotational movement about the axis. At least two independently locatable gears or sprockets disposed radially exterior of the upper and lower lapping wheels rotatably carry a carrier between the upper and lower lapping wheels, in which a material carried within an opening formed in the carrier travels at least partially radially exterior of both lower and upper lapping wheels during operation of the machine.
Claims22
A lapping machine comprising:
- upper and lower lapping wheels and a sprocket having a common centered rotational axis;
- a rotational drive source for at least one of the upper and lower lapping wheels to provide rotational movement about the axis;
- at least two independently locatable gears or sprockets disposed radially exterior of the upper and lower lapping wheels for rotatably carrying a carrier between the upper and lower lapping wheels, the at least two gears or sprockets configured to accommodate differently sized carriers, in which a work piece carried within an opening formed in the carrier travels at least partially radially exterior of both lower and upper lapping wheels during operation of the machine.
A lapping machine comprising:
- upper and lower lapping wheels and a sprocket having a common centered axis;
- a rotational drive source for at least one of the upper and lower lapping wheels to provide rotational movement about the axis;
- at least two independently locatable gears or sprockets disposed radially exterior of the upper and lower lapping wheels for rotatably carrying a carrier between the upper and lower lapping wheels, the at least two gears or sprockets configured to accommodate differently sized carriers, in which a work piece composed of a semiconductor material or rigid material carried within an opening formed in the carrier travels at least partially radially exterior of both lower and upper lapping wheels during operation of the machine.
12-21. (canceled)
A lapping machine comprising:
- upper and lower lapping wheels and a sprocket having a common centered axis;
- a rotational drive source for at least one of the upper and lower lapping wheels to provide rotational movement about the axis;
- at least two independently locatable idler gears or sprockets disposed radially exterior of the upper and lower lapping wheels for rotatably carrying a carrier between the upper and lower lapping wheels, the at least two gears or sprockets configured to accommodate differently sized carriers, wherein the carrier travels at least partially radially exterior of both lower and upper lapping wheels during operation of the machine.
(canceled)
Dependencies are inferred from the claim text.