Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate
2006-06-21
2008-09-09
Ip, Paul (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
C318S280000, C318S445000, C318S468000
Reexamination Certificate
active
07423400
ABSTRACT:
A system and method for controlling a rotational closure system, such as a lift gate, of a vehicle may include sensing an angle of the rotational closure system, generating a drive signal, driving a drive mechanism with the drive signal to output a mechanical force for moving the rotational closure system, generating an angle signal having a digital pulsewidth modulation form with a duty cycle based on the angle of the rotational closure system, feeding back the angle signal, and, in response to the feedback angle signal, altering the drive signal while the drive mechanism is moving the rotational closure system between open and closed positions. In one embodiment, the angle signal is generated from a location disposed on the rotational closure system. A controller mounted to the rotational closure system may include an angle sensor and be configured to receive and process the angle signal to drive the drive mechanism.
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Chinsen Jason
Dominik Tomasz T.
Frommer Thomas P.
Grills Reginald C.
Flextronics Automotive Inc.
Ip Paul
Patton & Boggs LLP
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