MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202641110996 A) filed by Dr B Nagaraj; Sakthikailash P; Darshan. S; Dharshan. S; Ragupathi. S; and Jey Ashwanth M A on September 16, 2026, for Self-Adjusting Student Chair With Integrated Height And Weight Detection System.
Inventors include Sakthikailash P; Darshan. S; Dharshan. S; Ragupathi. S; and Jey Ashwanth M A.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: The present invention discloses an automatically adjustable ergonomic chair system designed for use in educational environments. The system comprises a piezoelectric pressure sensor array embedded within the seat surface, an infrared height sensor, an ultrasonic lumbar sensor, a 32-bit ARM microcontroller, and motorized pneumatic actuators. Upon a student occupying the seat, the pressure sensors confirm occupancy, while the infrared and ultrasonic sensors measure the student's seated height and lumbar distance respectively. The microcontroller processes the acquired data using a pre-programmed ergonomic algorithm and automatically adjusts the seat height within a range of 280mm to 520mm and the backrest angle between 90° and 115° to achieve an optimal ergonomic seating position tailored to the individual student's body dimensions. The entire adjustment cycle is completed within 3–5 seconds without any manual intervention. The system incorporates obstruction detection, load limiting, manual override, and a status indicator LED for safe classroom operation. An optional RFID-based student profile memory enables instant recall of previously stored adjustment settings. The invention addresses the widespread problem of standardized classroom furniture failing to accommodate the varied body sizes of growing students, thereby promoting correct posture, reducing musculoskeletal strain, and improving student comfort and concentration during academic activities.
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