초록 ▼

An actuation system controls the flow of electric power to electromagnetic actuators to control motion or movement of at least two shafts or bodies. The system is preferentially applied to braking systems in automobiles and trucks, and may also be applied to other areas, including clutches and drive

An actuation system controls the flow of electric power to electromagnetic actuators to control motion or movement of at least two shafts or bodies. The system is preferentially applied to braking systems in automobiles and trucks, and may also be applied to other areas, including clutches and drive systems for other power transmission purposes. The electromagnetic retarders may also be used in combination with friction brake systems. Principal advantages of the combination system are the reliability and simplicity of friction and hydraulic components, and the lower wear and longer life of electromagnetic components.

대표청구항 ▼

An actuation system controls the flow of electric power to electromagnetic actuators to control motion or movement of at least two shafts or bodies. The system is preferentially applied to braking systems in automobiles and trucks, and may also be applied to other areas, including clutches and drive

An actuation system controls the flow of electric power to electromagnetic actuators to control motion or movement of at least two shafts or bodies. The system is preferentially applied to braking systems in automobiles and trucks, and may also be applied to other areas, including clutches and drive systems for other power transmission purposes. The electromagnetic retarders may also be used in combination with friction brake systems. Principal advantages of the combination system are the reliability and simplicity of friction and hydraulic components, and the lower wear and longer life of electromagnetic components. ching said plurality of multi-display sign boxes to said flat bed portion of said vehicle; positioning a lower member of each of said plurality of multi-display sign boxes on an upper surface of said flat bed portion; creating matching mounting holes in said lower member and said flat bed portion; passing at least one attaching means through said matching mounting holes; and securing said at least one attaching means in place, thereby securing said lower member to said flat bed portion. 15. The method of claim 14, wherein said step of attaching said plurality of multi-display sign boxes to said flat bed portion further includes attaching a pair of opposing multi-display sign boxes and a rear multi-display sign box to said flat bed portion such that said plurality of multi-display sign boxes forms an enclosure. 16. The method of claim 14, further comprising the step of illuminating said plurality of multi-display sign boxes. 17. The method of claim 14, further comprising the step of operating each of said plurality of multi-display sign boxes independently of each other. 18. The method of claim 17, further comprising the step of varying a frequency at which each of said plurality of sign boxes operates. 19. The method of claim 14, further comprising the step of providing power for operating said plurality of multi-display sign boxes. 20. The method of claim 14, further comprising the step of transmitting low power FM advertising messages. 21. A method of advertising comprising: providing a vehicle having a flat bed portion with an upper surface and at least one multi-display sign box bolted adjacent said upper surface of said flat bed portion thereof; and operating said vehicle in a plurality of locations. 22. The method of claim 21, further comprising the step of illuminating said at least one multi-display sign box. 23. The method of claim 21, further comprising the step of transmitting low power FM advertising messages. 24. A mobile multi-display billboard vehicle comprising: a vehicle including a cab and a flat bed portion; a plurality of multi-display sign boxes each of said multi-display sign boxes bolted to said flat bed portion and including a plurality of multi-sided display elements; a plurality of controllers, each of said controllers arranged and configured to operate one of said plurality of multi-display sign boxes at a desired frequency; and wherein each of said plurality of multi-display sign boxes is operatively coupled to one of said plurality of controllers. 25. The mobile multi-display billboard vehicle of claim 24, wherein each of said controllers further includes a computer. 26. The mobile multi-display billboard vehicle of claim 24, wherein said desired frequency of each of said controllers is selected from inside said cab. 27. The mobile multi-display billboard vehicle of claim 24, further including three of said multi-display sign boxes and three of said controllers. 28. A mobile multi-display billboard vehicle comprising: a vehicle having a cab and a bed portion; a pair of opposing multi-display sign boxes and a rear multi-display sign box, each of said multi-display sign boxes including a front side, a back side, a lower frame member, an upper frame member, a pair of end frame members, a plurality of triangular display elements being vertically supported between said upper frame member and said lower frame member, a drive mechanism partially disposed in said lower frame member for rotating said plurality of triangular display elements in tandem, a motor configured to rotate said drive mechanism, and a controller configured to allow a frequency at which said plurality of triangular display elements is rotated to be varied; a plurality of lighting fixtures being mounted to an upper surface of said bed portion and configured to illuminate said multi-display sign boxes; a diesel generator attached to said bed portion being configured to supply operating power to said multi-displa