Abrading – Precision device or process - or with condition responsive... – Computer controlled
Reexamination Certificate
2011-08-02
2011-08-02
Eley, Timothy V (Department: 3723)
Abrading
Precision device or process - or with condition responsive...
Computer controlled
C125S016010, C451S009000, C451S010000, C451S048000, C451S304000
Reexamination Certificate
active
07988528
ABSTRACT:
An apparatus for grinding a threaded portion of a workpiece, is provided. The threaded portion has a spiral groove formed therein. The apparatus includes a motor, a grinding cord, a detector and a controller. The motor has a rotary portion for rotating the threaded portion of the workpiece about an axis. The grinding cord is configured for being looped around the threaded portion of the workpiece with a middle part thereof engagingly received in a given portion of turns of the spiral groove for grinding the thread portion of the workpiece. The detector is for detecting a rotating cycle of the rotary portion. The controller is communicatively coupled to the detector for controlling the rotary portion to selectively rotate in a first rotating direction or in a reverse second rotating direction based on the received signal from the detector.
REFERENCES:
patent: 2714790 (1955-08-01), Lindenborg
patent: 3850215 (1974-11-01), Orlomoski
patent: 7118446 (2006-10-01), Walsh et al.
patent: 67232 (1882-12-01), None
patent: 1304662 (1973-01-01), None
Cheng Andrew C.
Eley Timothy V
Hon Hai Precision Industry Co. Ltd.
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