Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-04-03
2007-04-03
Budd, Mark (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
10891623
ABSTRACT:
There is described a voltage booster circuit for powering a piezoelectric actuator of an injector, and having a first and a second input terminal supplied with an input voltage; a first and a second output terminal supplying an output voltage greater than the input voltage, the second input terminal and second output terminal being connected to each other over a common line; a first and a second inductor coupled magnetically and connected in series between the first input terminal and the first output terminal; a capacitor connected between the first output terminal and the second output terminal; and a controlled switch connected between the intermediate node between the first and second inductor, and the second input terminal and second output terminal, and which switches between a closed operating state, to permit charging of the first inductor by the input voltage, and an open operating state, to permit transfer of the charge stored in the first inductor to the capacitor via the second inductor.
REFERENCES:
patent: 4333434 (1982-06-01), Brunais et al.
patent: 4404502 (1983-09-01), Magori et al.
patent: 4767959 (1988-08-01), Sakakibara et al.
patent: 5299739 (1994-04-01), Takahashi et al.
patent: 6995496 (2006-02-01), Hagood et al.
European Search Report for EP 04 10 3376 (Dec. 6, 2005).
Budd Mark
C.R.F. Società Consortile per Azioni
Howrey LLP
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