The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1991
Filed:
Nov. 09, 1990
Walter W Wawrzyniak, Mt. Clemens, MI (US);
Richard A Habarth, Allen Park, MI (US);
Practical Engineering, Inc., Roseville, MI (US);
Abstract
A milling machine for cutting a surface on a workpiece and including a milling head assembly having a cutting stroke for cutting the surface of the workpiece and a return stroke to prepare for the next cutting stroke, the milling head assembly including a rotatable spindle structure with a cutter structure mounted to the spindle structure for rotation therewith and being actuable to provide a desired cut on the workpiece surface and a piston and cylinder construction operatively connected with the cutter structure to axially position the cutter structure separately from the spindle structure between an advanced position to provide a desired cut on the workpiece surface and a retracted position relative to the workpiece surface to preclude cutting engagement with the workpiece surface as the cutter structure is moved in opposite directions traversing the workpiece surface and a unique method providing a rough cut on the workpiece surface when the cutter structure is in the retracted position and a finish cut when the cutter structure is in the advanced position and actuating the cutter structure to the retracted position for the return stroke after the finish cut.