Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2007-03-20
2007-03-20
Ip, Paul (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S433000, C318S436000, C254S418000, C254S424000
Reexamination Certificate
active
11243253
ABSTRACT:
An electric jack ground contact detection method and device for detecting ground contact of an electric motor-driven jack as the jack is being extended to adjust the attitude of a mobile platform. The device includes a controller that monitors the electrical power draw of an electric motor-driven jack while the jack is being extended for use in adjusting the attitude of a mobile platform. The controller recognizes jack ground contact when the monitored power draw value exceeds a ground contact power draw value consistent with jack ground contact. The controller calculates the ground contact power draw value as equaling the sum of a dynamically-adjusted threshold power draw value associated with jack extension before ground contact and a power draw increase value equaling an amount of additional power that the jack is known to draw as a result of jack ground contact.
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Ford Robert M.
Haley Shawn P.
Manfreda John P.
Woloszyk Mark J.
Innovative Design Solutions
Ip Paul
Reising Ethington Barnes Kisselle P.C.
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