{"number":"US12703048B2","kindCode":"B2","documentType":"grant","title":{"original":"System and method for cracking a connecting rod","english":"System and method for cracking a connecting rod"},"abstract":{"original":"A method for creating a cracking line in a connecting rod includes etching, using a first pass of a laser, a groove in an inner surface of a larger bore of a connecting rod by removing material from the inner surface. The groove may be discontinuous and include a plurality of holes that are spaced apart and have different depths. The method further includes removing more material from the groove using a second pass of the laser to increase the depths of the holes, thereby increasing the stress concentration factor of the groove.","english":"A method for creating a cracking line in a connecting rod includes etching, using a first pass of a laser, a groove in an inner surface of a larger bore of a connecting rod by removing material from the inner surface. The groove may be discontinuous and include a plurality of holes that are spaced apart and have different depths. The method further includes removing more material from the groove using a second pass of the laser to increase the depths of the holes, thereby increasing the stress concentration factor of the groove."},"applicants":["Toyota Jidosha Kabushiki Kaisha","Toyota Motor Engineering & Manufacturing North America, Inc."],"inventors":["Craig Allen Buchanan","Adam Joseph Haynes","Toshiki Fujikawa","Yasuhiro Waki","Yuya Fukaya"],"filingDate":"2022-07-28","publicationDate":"2026-08-11","grantDate":"2026-08-11","verifiedWithOffice":true,"pdfUrl":"https://downloadpatent.com/pdf/US12703048B2.pdf","pages":{"en":"https://downloadpatent.com/patent/US12703048B2","zh-Hant":"https://downloadpatent.com/zh-Hant/patent/US12703048B2","ja":"https://downloadpatent.com/ja/patent/US12703048B2"}}