Recent Patents on Mechanical Engineering - Volume 13, Issue 3, 2020

Background: Malocclusion is a disease with a high incidence rate that is harmful to humans’ health. Fixed orthodontics is an effective method for the treatment of malocclusion. However, the orthodontic process takes a long time, requires frequent visits, causes pain, and increases the risk of complications. Since orthodontic treatment is lengthy, painful and unbearable, and even leads patients to abandon orthodontic treatme Read More

Background: Currently, there are about twenty percent of the subjects who feel pain and become uncomfortable while they are in the middle of the process of bowel disease examination by colonoscopy. Within the examination, the attending physician needs the assistance of nurses to complete the operation, which is extremely inconvenient. And there is still the chance of being hurt or infected by corrosive intestinal juice. Theref Read More

Background: Micro-Electrical Discharge Machining (EDM) milling is widely used in the processing of complex cavities and micro-three-dimensional structures, which is a more effective processing method for micro-precision parts. Thus, more attention has been paid on the micro-EDM milling. Objective: To meet the increasing requirement of machining quality and machining efficiency of micro- EDM milling, the processing devic Read More

Background: Valves are an important part of nuclear power plants and are the control equipment used in nuclear power plants. It can change the cross-section of the passage and the flow direction of the medium and has the functions of diversion, cutoff, overflow, and the like. Due to the earthquake, the valve leaks, which will cause a major nuclear accident, endangering people's lives and safety. Objective: The purpose of Read More

Background: According to "The World's Top Ten Chronic Diseases" published by the World Health Organization (WHO), Cervical Spondylosis, ranked second, has afflicted more youngsters and the number is still growing because of the popularity of smart devices and long-term office work. Surgical treatment is an invasive method with certain harm; in contrast, traction therapy, as a conservative treatment, can effectively re Read More

Background: Electrical Discharge Machining (EDM) technology is widely applied for micro- manufacturing of difficult-to-process materials and complex shapes, which causes a growing demand for tool electrodes. The machining performance of an electrode eventually affects machining efficiency and accuracy and electrode loss of EDM. Thus, more researches on the electrode structures and electrode materials in the ED Read More

Background: As a key component of the rail transit vehicle, the railway bogie greatly affects the dynamic performance, reliability, and safety of the high-speed rail vehicle. In this paper, the structural strength of a typical trailer bogie frame is evaluated and its strength and dynamic requirements are verified. In addition, various patents on bogie structural strength have also been discussed in this paper. Objective: The study aimed Read More

Background: Since the rapid development of polymers in the 1920’s, polymer products have become a necessary part of people's lives. Supercritical fluid technology was gradually introduced in this field. With the emergence of new technologies, methods, and equipment, the supercritical fluid technology has rapidly developed in the field of polymers and displayed a broad application perspective. Objective: Th Read More