Electricity: motive power systems – Constant motor current – load and/or torque control – Control of motor load or device driven
Reexamination Certificate
2007-04-24
2007-04-24
Ip, Paul (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
Control of motor load or device driven
C318S432000, C318S436000, C280S006159, C254S424000, C254S418000
Reexamination Certificate
active
11243233
ABSTRACT:
An electric jack load balancing method and device for reducing the difference in load carried by each jack of a pair of electric jacks while adjusting the attitude of a platform. The device includes a controller configured to reduce the difference in load carried by each jack of a pair of electric jacks. The method includes monitoring the power draws of the jack motors of the pair of electric jacks, comparing the ratio of the power draws of the jack motors to a predetermined desirable power draw ratio, and when the jack motor power draw ratio differs from the desirable power draw ratio, modifying the operation of the jacks in such a way as to decrease the difference between their actual power draw ratio and the predetermined desirable power draw ratio.
REFERENCES:
patent: 3606247 (1971-09-01), Liston
patent: 3943637 (1976-03-01), Hanser
patent: 4061309 (1977-12-01), Hanser
patent: 4084830 (1978-04-01), Daniel et al.
patent: 4148125 (1979-04-01), Hanser
patent: 4165861 (1979-08-01), Hanser
patent: 4380258 (1983-04-01), Hanser
patent: 4467250 (1984-08-01), Thomasson
patent: 4597584 (1986-07-01), Hanser
patent: 4655269 (1987-04-01), Hanser et al.
patent: 4743037 (1988-05-01), Hanser
patent: 4746133 (1988-05-01), Hanser et al.
patent: 4807767 (1989-02-01), Kornely
patent: 5143386 (1992-09-01), Uriarte
patent: 5176391 (1993-01-01), Schneider et al.
patent: 5188379 (1993-02-01), Krause et al.
patent: 5511459 (1996-04-01), Hanser et al.
patent: 5547040 (1996-08-01), Hanser et al.
patent: 5628521 (1997-05-01), Schneider et al.
patent: 5656903 (1997-08-01), Shui et al.
patent: 5676385 (1997-10-01), Schneider et al.
patent: 5772270 (1998-06-01), Hanser et al.
patent: 5890721 (1999-04-01), Schneider et al.
patent: 5901969 (1999-05-01), Schneider et al.
patent: 5908215 (1999-06-01), Hanser et al.
patent: 5913525 (1999-06-01), Schneider et al.
patent: 6050573 (2000-04-01), Kunz
patent: 6684623 (2004-02-01), Langston et al.
patent: 6948722 (2005-09-01), Sproatt et al.
patent: 7025178 (2006-04-01), Wengelski et al.
patent: 7091683 (2006-08-01), Smith et al.
patent: 2003/0015982 (2003-01-01), Cox-Smith et al.
patent: 2004/0046337 (2004-03-01), Sproatt et al.
patent: 2004/0155622 (2004-08-01), Mayhew et al.
patent: 2005/0237802 (2005-10-01), Santero et al.
Ford Robert M.
Haley Shawn P.
Manfreda John P.
Woloszyk Mark J.
Innovative Design Solutions
Ip Paul
Reising Ethington Barnes Kisselle P.C.
LandOfFree
Electric jack load balancing method and device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric jack load balancing method and device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric jack load balancing method and device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3778909