Rotary tool with an indicating coiled spring
OwnerJi-Fen Menginventor
Life of this patent
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Abstract
A rotary tool includes a tool body having a driving end formed thereon and an annular groove defined therein. An indicating coiled spring is received in the annular groove. The indicating coiled spring has a colored indicating mark formed thereon for easily identifying a standard of the rotary tool. The indicating coiled spring is made of metal, wherein the indicating coiled spring is hard to be broken and a lifetime of the indicating coiled spring is lengthened. The indicating coiled spring is able to elastically expand to be easily and co-axially sleeved on the annular groove of the tool body, such that the indicating coiled spring being replaceable and re-useable. When operating, the indicating coiled spring is rotatable relative to the tool body.
Claims4
A rotary tool with an indicating coiled spring comprising:
- a tool body having a driving end integrally formed thereon and an annular groove defined in an outer periphery of the tool body;
- and
- an indicating coiled spring stably received in the annular groove of the tool body, the indicating coiled spring having a colored indicating mark formed thereon for easily identifying a standard of the rotary tool, the indicating coiled spring being made of metal, wherein the indicating coiled spring is hard to be broken and a lifetime of the indicating coiled spring is lengthened;
- wherein the indicating coiled spring is able to elastically expand to be easily and co-axially sleeved on the annular groove of the tool body, the indicating coiled spring being replaceable and re-useable;
- when operating, the indicating coiled spring being rotatable relative to the tool body and stably received in the annular groove for preventing the tool body from wearing.
Dependencies are inferred from the claim text.