Raytheon Technologies has been granted a patent for a clutch assembly featuring a rotating control piston that engages with a clutch pack. The control piston includes a chamber divider dividing the enclosed volume into control pressure and pressure balancing chambers, filled with hydraulic fluid. Movement between engaged and disengaged positions is controlled by hydraulic pressure modulation. GlobalData’s report on Raytheon Technologies 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 Raytheon Technologies, Photovoltaic drones was a key innovation area identified from patents. Raytheon Technologies's grant share as of May 2024 was 58%. Grant share is based on the ratio of number of grants to total number of patents.
Clutch assembly with rotating control piston for hydraulic modulation
A recently granted patent (Publication Number: US12000343B1) discloses a clutch assembly designed for speed-changing transmission systems. The assembly includes a control piston that can engage a clutch pack through hydraulic pressure modulation, allowing for smooth transition between disengaged and engaged positions. The control piston is divided into a control pressure chamber and a pressure balancing chamber, both filled with hydraulic fluid. The assembly also features control pressure orifices and pressure balance chamber orifices for fluid connection and modulation, along with glide rings for smooth operation. Additionally, the chamber divider can be connected to the output shaft, and a retaining ring is included to secure the cover plate inside the piston member.
Moreover, the patent extends to a speed-changing transmission assembly and an aircraft application. The transmission assembly comprises multiple clutch assemblies, each with a similar design to the clutch assembly described earlier. The control piston's movement is controlled by hydraulic pressure in the control pressure chamber, ensuring equal and opposite forces for balance. The transmission assembly also includes control pressure orifices, pressure balance chamber orifices, glide rings, and a retaining ring for each clutch assembly. In the aircraft application, the transmission assembly connects the gas turbine engine to accessory components, converting rotational energy to a usable speed range. The assembly's design allows for efficient modulation of hydraulic pressure in both the control pressure and pressure balancing chambers, ensuring smooth operation and optimal performance for the aircraft's systems.
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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.
