Furukawa has patented a hydraulic hammering device featuring an auto-stroke mode and an idle strike prevention mode. The device utilizes a simple circuit with two control valves to manage piston movements, allowing for efficient operation by selecting between regular and short strokes while preventing idle strikes. GlobalData’s report on Furukawa 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 Furukawa, Lithium-ion batteries was a key innovation area identified from patents. Furukawa's grant share as of July 2024 was 49%. Grant share is based on the ratio of number of grants to total number of patents.
Hydraulic hammering device with auto-stroke and idle strike modes
The granted patent US12070844B2 describes a hydraulic hammering device designed to enhance operational efficiency through advanced control mechanisms. The device features a cylinder housing a piston that can move both forward and backward, regulated by a first control valve. A key innovation is the inclusion of an auto-stroke mode, which allows the piston to switch between a regular stroke and a shorter stroke, as well as an idle strike prevention mode that reduces the internal circuit pressure below the working threshold. The second control valve plays a crucial role in selecting between these modes, incorporating a shared spool that facilitates the simultaneous adjustment of both the auto-stroke and idle strike prevention settings.
Further details of the hydraulic hammering device include the structural configuration of the second control valve, which contains a high-pressure chamber and a control chamber separated by the shared spool. The design also incorporates a decompression chamber that connects to the decompression passage, strategically positioned between the high-pressure and control chambers. The mode selection mechanism allows for distinct operational states: in the regular position, it enables the auto-stroke mode, while in the upper position, it activates the idle strike prevention mode. Additionally, the device features a variable throttle linked to the decompression chamber, enhancing its ability to manage pressure effectively. The configuration ensures that the stroke control port and valve control port remain unconnected, optimizing the device's functionality and responsiveness during operation.
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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.
