Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1994-04-13
1996-02-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310317, 310319, 36137, 362103, H01L 4108
Patent
active
054951364
ABSTRACT:
A member made from a suitable material such as a polyurethane epoxy designed to withstand impact against an object is provided as a support member. For example, the member may constitute an insert disposed on or in the heel of a shoe but a wide variety of other applications are possible. A suitable member such as a piezoelectric member is disposed on the support member to produce a signal when the support member is impacted against the object or when the impact is released. This signal is amplified by an amplifier which is powered by a suitable source such as a battery. The amplified signals are introduced to a light emitting member such as a light emitting diode which provides an illuminated indication of the impact of the support member against the object. A member such as a resistance may be disposed in the circuit with the battery and the amplifier to limit the current flow through the amplifier during the times that the piezoelectric member is energized.
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patent: 4748366 (1988-05-01), Taylor
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patent: 4943752 (1990-07-01), Todd et al.
patent: 5188447 (1993-02-01), Chiang et al.
patent: 5285586 (1994-02-01), Goldston et al.
Chiang Lee
Ratcliffe William R.
Budd Mark O.
Marpole International Inc.
Roston Ellsworth R.
Schwartz Charles H.
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