This book gathers invited contributions as survey and research reports in mechanism and machine science (MMS) ranging across the entire field, related in most instances to the works of late Prof. Carlos López Cajún, one of the field's most prominent scholars. The book provides state-of-the-art information and showcases the latest achievements and challenges of MMS. The book is an accessible avenue to understanding ideas and solutions by leading international scientists who offer much-needed historical insights into the MMS field with future perspectives.