The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2025
Filed:
Apr. 28, 2020
Indian Institute of Technology Madras, Chennai, IN;
Svp Laser Technologies Pvt. Ltd., Chennai, IN;
INDIAN INSTITUTE OF TECHNOLOGY MADRAS, Chennai, IN;
SVP LASER TECHNOLOGIES PTE. LTD., Chennai, IN;
Abstract
The hotwire cutting machine () comprises a plurality of heated wires (), springs (), and grooved rods (, and) supported on end bearings (). The grooved rods (, and) are coupled to a motor () for rotating the grooved rods (, and) in the direction of wire movement due to thermal expansion. The wires are oscillated along their length by the to-and-fro rotation of a splined shaft (). Existing solutions oscillate the entire heavy frame, resulting in vibrations and requiring heavy motors and drives. In contrast, the proposed hotwire cutting machine () minimizes the oscillating mass and allows for automatic adjustment of inter-wire distance/pitch. The composite cutting wire section includes a first wire () with high mechanical strength and low electrical resistance, joined by manual twisting or welding with a second wire (), typically Nichrome, to withstand repeated bending cycles.