Electric wrench for vehicle repairing

Details Electric wrench for vehicle repairing Electric wrench for vehicle repairing

2005-07-19

2005-07-19

Smith, James G. (Department: 3723)

Tools

Including tool driving by impact delivering component or...

Structurally constrained to arcuate movement

C173S093500, C173S109000

Reexamination Certificate

active

06918325

ABSTRACT:
The present invention relates to an electric wrench for vehicle repairing which comprises a DC driving motor, transmission gears, a clutch, a power accumulator and a transmission shaft. When the DC driving motor rotates, it will drive the transmission gears which will in turn drive the power accumulator to rotate with high speed. The power accumulator will drive the clutch to rotate. When the power accumulator reaches the pre-set high speed, it accumulates sufficient inertial force. Owing to centrifugal force, the clutch will make a hammer block to impact a hammer inside the power accumulator, thus driving the transmission shaft to rotate suddenly. The electric wrench is with simple structure and can generate high output torque without producing reaction torque and angular force.

REFERENCES:
patent: 3090450 (1963-05-01), Fulop
patent: 3157074 (1964-11-01), Durkee
patent: 3559269 (1971-02-01), Schmitt et al.
patent: 4561331 (1985-12-01), Pratt, Sr.
patent: 5735354 (1998-04-01), Weidner et al.

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