MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202521119405 A) filed by Kirloskar Pneumatic Company Limited, Pune, Maharashtra, on Nov. 29, 2025, for 'micro-textured surface design for reduced drag in screw compressor rotor.'
Inventor(s) include Abhishek Kumar.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "Micro-Textured Surface Design for Reduced Drag in Screw Compressor Rotor The invention relates to a screw compressor rotor featuring a shark skin-inspired micro-textured (303) surface designed to reduce aerodynamic drag and enhance flow dynamics. The rotor includes riblet structures (103) modelled after shark dermal denticles, integrated onto the helical profiles of male (101) and female rotors (102). These riblets (103) are aligned with the direction of gas flow and fabricated using advanced techniques such as laser micromachining, additive manufacturing, or nano-imprinting. The invention further includes a screw compressor system incorporating such micro-textured (303) rotors within a housing, along with inlet and outlet ports, seals, and bearings. A method for manufacturing the rotor is also disclosed, involving the formation of riblet structures (103) during or after rotor fabrication, optimized for turbulent, multi-directional gas flows. The invention ensures compatibility with existing compressor designs and offers improved aerodynamic efficiency through precise boundary layer manipulation."
Disclaimer: Curated by HT Syndication.
