Traversing hoists – Overhead – Self-propelled trolley
Reexamination Certificate
2006-04-18
2006-04-18
Brahan, Thomas J. (Department: 3654)
Traversing hoists
Overhead
Self-propelled trolley
C212S270000
Reexamination Certificate
active
07028856
ABSTRACT:
This crane control apparatus and method with swing control and variable impedance is intended for use with overhead cranes where a line suspended from a moveable hoist suspends a load. It is responsive to operator force applied to the load and uses a control strategy based on estimating the force applied by the operator to the load and, subject to a variable desired load impedance, reacting in response to this estimate. The human pushing force on the load is not measured directly, but is estimated from measurement of the angle of deflection of the line suspending the load and measurement of hoist position.
REFERENCES:
patent: 2940608 (1960-06-01), Underwood et al.
patent: 4163929 (1979-08-01), Janu et al.
patent: 5350075 (1994-09-01), Kahlman
patent: 5850928 (1998-12-01), Kahlman et al.
patent: 5915673 (1999-06-01), Kazerooni
patent: 6204619 (2001-03-01), Gu et al.
patent: 6204620 (2001-03-01), McGee et al.
patent: 6299139 (2001-10-01), Kazerooni
patent: 6386513 (2002-05-01), Kazerooni
patent: 6796447 (2004-09-01), Laundry et al.
“Human Assisted Impedance Control of Overhead Cranes”, J.T. Wen, D.O. Popa, G. Montemayor, and P.L. Liu, presented at the CCA (Conference on Control Applications), Mexico City, Sep. 2001.
“Intelift Air Balancers”, Ingersoll-Rand web site, Intelift control handle, Jan. 30, 2001.
Laundry Bradford B.
Liu Li-te
Montemayor Gustavo
Popa Dan O.
Taylor Michael K.
Brahan Thomas J.
Brown & Michaels PC
Gorbel, Inc.
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