Gear cutting – milling – or planing – Milling – Randomly manipulated – work supported – or work following device
Reexamination Certificate
2006-07-04
2006-07-04
Cadugan, Erica (Department: 3722)
Gear cutting, milling, or planing
Milling
Randomly manipulated, work supported, or work following device
C409S138000, C409S137000, C409S136000, C409S135000, C409S134000, C409S215000, C408S059000, C144S136950, C144S252100
Reexamination Certificate
active
07070371
ABSTRACT:
A chamfering air tool includes a driving shaft in a casing rotated by air pressure, a rotary shaft perpendicularly combined to the driving shaft for rotation, and a cutter fixed to the rotary shaft. Air holes are formed through the rotary shaft in a longitudinal direction. An air discharge groove is formed in the cutter, and a hole communicated with the air hole is formed in a fixing bolt head. An air path is formed in the fixing bolt head to keep a predetermined gap from the cutter. A guide ring having a diameter approximate to a lower end of the cutter is rotatably mounted to the fixing bolt head. Thus, air is blown to the air hole of the rotary shaft, the air hole formed in the fixing bolt head, the air path formed between the cutter and the guide ring, and the air discharge groove of the cutter, thereby eliminating cut chips and cooling the cutter.
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Cadugan Erica
Jordan and Hamburg LLP
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