Class 451/16 - Ratchet and pawl drive

Subclass of Class 451 - Abrading
Definition: Subject matter including use of a circular toothed wheel
No. of patents: 4
Last issue date: 07/24/2007

Number	Title	Issue Date
7246424	Magnetic devices having magnetic features with CMP stop layers A magnetic device having a magnetic feature, the magnetic feature including a magnetic portion comprising a magnetic material, a region of non-magnetic material adjacent to the magnetic portion, and a stop layer disposed above the region of non-magnetic material, de...	07/24/2007
4680896	Tool unloading mechanism for automatic tool grinding machine Successively finished drills or other tools are ejected from a chuck into successive angularly spaced openings in a rotary turret, mounted on a carriage with a power device for reciprocating the turret into and out of an unloading position. A ratchet whee...	07/21/1987
4628642	Device for sharpening circular knives A knife sharpening device has a slide (8) which carries freely rotatable grinding wheels or disks (11, 12). The slide is adjustable along a bar (5) of a frame (1, 2). The slide is fixed against lateral displacement in an adjusted operating or rather grind...	12/16/1986
4213277	Method for dressing a grinding wheel A method of intermittently dressing the ring-shaped surface or active rim of an axially adjustable dished grinding wheel of a gear grinding machine and which active rim acts upon a workpiece. The position of the active rim is controlled and the grinding w...	07/22/1980

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