Takeuchi Mfg.’s patented working vehicle features a drive unit with inverters, AC motors, and hydraulic pumps, controlled by a battery, controller, and display unit. The system ensures safe operation by setting residual voltage below a predetermined level when the vehicle is turned off. GlobalData’s report on Takeuchi Mfg. gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Takeuchi Mfg., Hybrid work machines was a key innovation area identified from patents. Takeuchi Mfg.'s grant share as of May 2024 was 39%. Grant share is based on the ratio of number of grants to total number of patents.
Working vehicle with stop control for residual voltage management
A recently granted patent (Publication Number: US11993917B2) discloses a working vehicle equipped with a sophisticated system for controlling its operation. The vehicle includes a drive unit with inverters, AC motors, and hydraulic pumps, all powered by a battery managed by a controller and a battery management system. The system also features a switch, an electromagnetic contactor, and a display unit, all interconnected to ensure smooth operation. Notably, the controller is designed to perform stop control by operating the AC motors to set a residual voltage in the inverters below a predetermined level when the vehicle is turned off, enhancing safety and efficiency.
Furthermore, the patent details error detection mechanisms within the system. If the controller detects that the residual voltage exceeds the set level, it transmits error signals to the display unit, prompting the display of error indications. Additionally, the system allows for precise start control of the AC motors when the vehicle is turned on, ensuring seamless operation. The vehicle's drive unit is also designed with redundancy, featuring multiple sets of inverters, AC motors, and hydraulic pumps, each controlled independently by the controller during operation and shutdown phases, preventing hydraulic oil discharge to specific actuators when the vehicle is turned off for added safety measures.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
