Indian researchers secure 3 patents in assistive tech for differently-abled
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New Delhi: Indian researchers have developed innovative assistive technologies that reimagine the sewing machine’s foot pedal, enabling full operation through hand control and empowering differently-abled to work independently.
The breakthrough came after researchers at Tamil Nadu’s Sona College of Technology observed that women with limited lower-limb mobility were unable to use industrial sewing machines. A four-member team, D. Raja, K. Mani, G. Gunasekaran and S.S. Suresh, responded to the challenge, earning three patents in the process.
The latest, the Haptic Glove Variant (2025), is a wearable device that uses palm-pressure sensors to wirelessly activate the sewing machine motor, combining ergonomic comfort with inclusive design.
In 2024, the team patented the Optical Sensor Variant, which recognizes hand gestures to control the machine, offering a light-touch, hands-free system that enhances both safety and adaptability.
The journey began with the Load-Cell L-Plate Variant, patented in 2022, which replaced the traditional foot pedal with a hand-press system.
These innovations have enabled differently-abled women to perform all standard industrial sewing operations with ease, creating pathways for steady incomes in garment units close to home. Over the past nine years, more than 300 women have been trained to use the patented machines, many of whom have found not only employment but also renewed dignity and confidence.
“These patents are not just about technology,” said Chocko Valliappa, Vice Chairman of Sona College of Technology. “They are about breaking barriers, creating opportunities, and showing that inclusion can be designed into everyday tools.”
The Tamil Nadu government has sponsored 11 patented sewing machines for livelihood support at a Sona College-run community center in Maramangalathupatti, Salem district, where an additional 300 women have received training.