Measuring and testing – Speed – velocity – or acceleration
Patent
1998-05-27
2000-03-21
Williams, Hezron
Measuring and testing
Speed, velocity, or acceleration
73493, 73DIG3, 180167, 180170, G01P 1500, B60K 4100
Patent
active
060389230
ABSTRACT:
A hand-operated accelerator device includes a handgrip speed controlling actuator sleeved rotatably on a handlebar. A speed controlling signal emitting member has an elongated chamber therein with an opened guiding slot. A shifting member is slidably received in the elongated chamber, and has two magnets spaced apart from each other, and a protruding member extending outwardly of the guiding slot to move the shifting member in the chamber upon rotation of the actuator. A hall-effect generator extends transversely between the magnets so as to generate a voltage signal to be received by a circuit board when the shifting member is moved in order to convert the voltage signal into a control signal for controlling revolutions of an electric drive mechanism of an electric-powered bicycle. A spring is disposed to bias the shifting member in a longitudinal direction.
REFERENCES:
patent: 5307706 (1994-05-01), Nagano
patent: 5395293 (1995-03-01), Matsuura et al.
patent: 5433284 (1995-07-01), Chou
patent: 5581136 (1996-12-01), Li
patent: 5816355 (1998-10-01), Battlogg et al.
patent: 5855410 (1999-01-01), Lin
Giant Manufacturing Co. Ltd.
Kwok Helen C.
Williams Hezron
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