Torque transmission mechanisms and power tools having such...

Planetary gear transmission systems or components – Electric or magnetic drive or control – Differential drive or control

Reexamination Certificate

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C475S153000, C192S056200

Reexamination Certificate

active

06887176

ABSTRACT:
A torque transmission mechanism includes a drive shaft (31; 51; 84) and a driven shaft (32; 52; 87). The drive shaft rotates about an axis. The driven shaft extends along substantially the same axis as the drive shaft. A torque accumulator (35; 53; 90) serves to accumulate a rotational torque of the drive shaft and to transmit the rotational torque to the driven shaft due to a frictional force. A controller (20, 21, 24; 54, 57, 60, 64, 71, 73; 81, 92, 95, 98, 104) serves to control the accumulation of the torque in the accumulator.

REFERENCES:
patent: 3370680 (1968-02-01), Bangerter et al.
patent: 3803952 (1974-04-01), Whale, Jr.
patent: 3956905 (1976-05-01), Thackston
patent: 4243129 (1981-01-01), Schoeps
patent: 4328871 (1982-05-01), Gluskin
patent: 4502549 (1985-03-01), Hornung et al.
patent: 4875528 (1989-10-01), Thackston
patent: RE33514 (1991-01-01), Ciolli
patent: 5573472 (1996-11-01), Ciolli
patent: 5601149 (1997-02-01), Kawasaki et al.
patent: 2617640 (1977-01-01), None
patent: 3210889 (1983-09-01), None
patent: 3500324 (1985-07-01), None

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