Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2011-07-05
2011-07-05
Wolfe, Jr., Willis R (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S406580, C123S1490FA, C701S115000, C073S114250, C702S066000, C702S190000
Reexamination Certificate
active
07974767
ABSTRACT:
In a method for detecting an operating parameter of a power tool having an internal combustion engine with a cylinder, a piston delimiting a combustion chamber in the cylinder and driving a crankshaft supported rotatably in a crankcase, an intake supplying combustion air to the combustion chamber, an exhaust removing combustion gases from the combustion chamber, and a signal generator driven in rotation by the crankshaft emitting sequential alternating voltage signals, a period duration of the voltage signal is selected to correspond to the n-th portion of a crankshaft revolution with n greater than 2. The n-th portion of the crankshaft revolution provides a crankshaft angle interval. For each crankshaft angle interval at least one information is detected that represents a course plotted against the crankshaft angle. The course is scanned with regard to characteristic features that are correlated with an operating parameter of the power tool.
REFERENCES:
patent: 4461151 (1984-07-01), Kanesaka
patent: 4510569 (1985-04-01), Takao et al.
patent: 4597368 (1986-07-01), Ament
patent: 4633838 (1987-01-01), Fukui
patent: 4648367 (1987-03-01), Gillbrand et al.
patent: 4679536 (1987-07-01), Morita
patent: 4995348 (1991-02-01), Melchior
patent: 5047943 (1991-09-01), Takahata et al.
patent: 5440877 (1995-08-01), Kamura et al.
patent: 5544636 (1996-08-01), Geiger et al.
patent: 5640847 (1997-06-01), Nakajima et al.
patent: 5826563 (1998-10-01), Patel et al.
patent: 6125824 (2000-10-01), Klare et al.
patent: 6170462 (2001-01-01), Kondo
patent: 6224021 (2001-05-01), Tanaka
patent: 6230096 (2001-05-01), Nishimoto
Abou-Aly Mohamed
Layher Wolfgang
Leufen Heinrich
Maier Georg
Schieber Eberhard
Andreas Stihl AG & Co. KG
Hoang Johnny H
Huckett Gudrun E.
Wolfe, Jr. Willis R
LandOfFree
Method for detecting operating parameters of a power tool... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting operating parameters of a power tool..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting operating parameters of a power tool... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2645008