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US 6,315,079 B1Granted
Lifting device with movable lifting columns
AssigneeStertil B.V.
InventorsJan Berends, Jurjen Jan De Jong
Life of this patent
Estimating the term…
Abstract
A lifting device having separately displaced lifting column with a carriage controllably driven in a longitudinal direction. Connecting lines connect the control of the column. The connecting lines function as part of a digital data bus in order to exchange digital control signals with each lifting column having a separate operation device connected to the connecting lines to provide simultaneous actuation of the control of all lifting columns.
Claims19
A lifting device, comprising:
- at least two separately displaceable lifting columns;
- a carriage associated with each of said lifting columns wherein said carriage is guided slidably in a longitudinal direction of the column;
- drive means for displacing the carriage in a longitudinal direction relative to the column;
- control means for controlling the drive means;
- connecting lines for connecting the control means of the respective columns wherein said connecting lines form part of a digital data bus and wherein the control means are adapted to exchange digital control signals through said data bus and wherein each of said at least two lifting columns includes an operating means connected to the connecting lines for at least simultaneous actuation of the control means of all lifting columns.
2 more elements
A lifting device, comprising:
- at least two lifting columns which are separately displaceably in an unloaded state, each of said columns provided with a support foot;
- a carriage guided slidably in a longitudinal direction of a respective column;
- a lifting member arranged on one end of said carriage;
- drive means for displacing said carriage in a longitudinal direction relative to the column;
- control means for controlling said drive means;
- connecting lines for connecting the control means of the columns;
- operating means connected to the connecting lines for at least simultaneous actuation of the control means of each of said listing column wherein said connecting lines form part of a two-wire CAN digital data bus and wherein the operating means and the control means are adapted to exchange signals through said CAN type digital bus.
4 more elements
A lifting device, comprising:
- at least two lifting columns which are separately displaceably in an unloaded state, each of said columns provided with a support foot;
- a carriage guided slidably in a longitudinal direction of a respective column;
- a lifting member arranged on one end of said carriage;
- drive means for displacing said carriage in a longitudinal direction relative to the column;
- control means for controlling said drive means;
- connecting lines for connecting the control means of the columns;
- operating means connected to the connecting lines for at least simultaneous actuation of the control means of each of said listing column wherein said connecting lines form part of a digital data bus and wherein the operating means and the control means are adapted to exchange signals through said type digital bus, wherein the operating and control means are adapted so that, after arranging of the connecting means, the operating means and the control means assigned to each of the lifting columns a serial number intended for addressing of the control signals.
4 more elements
A lifting device, comprising:
- at least two lifting columns which are separately displaceably in an unloaded state, each of said columns provided with a support foot;
- a carriage guided slidably in a longitudinal direction of a respective column;
- a lifting member arranged on one end of said carriage;
- drive means for displacing said carriage in a longitudinal direction relative to the column;
- control means for controlling said drive means;
- connecting lines for connecting the control means of the columns;
- operating means connected to the connecting lines for at least simultaneous actuation of the control means of each of said listing column wherein said connecting lines form part of a digital data bus and wherein the operating means and the control means are adapted to exchange signals through said type digital bus, wherein the operating and control comprise adjusting members for mutually associating determined lifting columns to form independent operable pairs.
4 more elements
Dependencies are inferred from the claim text.