Manual screwdriver
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 14, 2017
Issued Date -
N/A
app pub date -
Dec 17, 2014
filing date -
Nov 12, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A manual screwdriver includes a handle defining a cavity and a slot, a screwdriver head at one end of the handle, a rotation connector rotatably received in the cavity, a spiral rod defining a spiral groove and being rotatably received in the cavity, an operating arm slidably received in the spiral groove with two ends of the operating arm extending from the cavity through the slot, and a first elastic element biased on the operating arm. The screwdriver head is connected to the handle via the rotation connector. The spiral rod can be driven by the operating arm to engage or disengage the rotation connector. When the spiral rod and the rotation connector are combined into an engaged state, the operating arm can slide in the spiral groove toward the screwdriver head to drive the spiral rod and the rotation connector to rotate relative to the handle.
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