Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Reexamination Certificate
2007-10-23
2007-10-23
Aurora, Reena (Department: 2862)
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
Reexamination Certificate
active
10851825
ABSTRACT:
A device for sensing the input shaft speed of an automotive automatic transmission that is driven by the engine through the fluid coupling of a torque converter. The speed sensor device includes circumferentially spaced markings about the transmission input shaft and a speed sensor that is placed at close proximity to the circumferentially spaced markings through a hole in the torque converter stator shaft. An electronic control unit (ECU) analyzes the sensor output signal and in the case of an active speed sensor it also functions as its power source. During vehicle operation, the transmission input shaft rotates the target wheel in front of the speed sensor causing modulation of its output signal. The electronic control unit analyzes the signal modulation and calculates the input shaft rotational speed. A variety of sensor/target-wheel options and sensor mounting techniques could be used depending on the application constraints.
REFERENCES:
patent: 3845671 (1974-11-01), Sharp et al.
patent: 4002937 (1977-01-01), Anson
patent: 4586401 (1986-05-01), Nogle
patent: 4875785 (1989-10-01), Santos et al.
patent: 4905507 (1990-03-01), Klein et al.
patent: 4911000 (1990-03-01), Takase et al.
patent: 4934501 (1990-06-01), Gay et al.
patent: 5067350 (1991-11-01), Grillo et al.
patent: 5067355 (1991-11-01), Witte
patent: 5157966 (1992-10-01), Lugosi et al.
patent: 5269201 (1993-12-01), Uematsu
patent: 6064198 (2000-05-01), Wolf et al.
patent: 6291989 (2001-09-01), Schroeder
patent: 6405593 (2002-06-01), Palfenier et al.
patent: 6522133 (2003-02-01), Haupt et al.
patent: 6538426 (2003-03-01), Enrietto et al.
patent: 6846260 (2005-01-01), Horiuchi
patent: 6969986 (2005-11-01), Schmid et al.
patent: 2003/0109346 (2003-06-01), Horiuchi
patent: 2003/0160605 (2003-08-01), Michalek et al.
patent: 19826068 (1999-12-01), None
patent: 10017542 (2001-10-01), None
patent: 0213732 (1987-03-01), None
patent: 08093898 (1996-04-01), None
Burns James J.
Denny Wayne V.
Joki Mark A.
LaCroix Mark E.
Odegard Brian Thomas
Aurora Reena
The Webb Law Firm P.C.
Timken US Corporation
LandOfFree
Transmission input shaft speed measuring assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission input shaft speed measuring assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission input shaft speed measuring assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3863844