Recent Patents on Mechanical Engineering - Volume 8, Issue 1, 2015

Measurement of asphaltene precipitation onset is important to detect the precipitation of asphaltene during production, transport and refining of petroleum fluids that can result in production losses and large increases in maintenance costs. A large quantity of methods can help determine the onset of asphaltene precipitation, including gravimetric analysis, visual observation, electromagnetic beam absorbance and physical pro Read More

In recent years, many double-prism mechanism patents have become promising solutions for precision engineering applications, which can perform superior optical pointing and tracking functions. The paper focuses on surveying recent patents related to rotating double-prism scanner used in the fields of free-space laser communications, laser radar, optical switches, laser scanning, and other precision engineering. A g Read More

As a main component of injection molding machine, nozzle is used to prevent polymer melt from leaking during plasticizing and provide an access injecting polymer melt into the mold cavity during injecting process. The straight-through nozzles and shut off nozzles with hydraulic or pneumatic are adopted in the traditional injection molding machine. The paper reviews various patents on nozzles with new structures and optimize Read More

The paper reviews recent patents by applying the boundary slippage technology to conserve the energy consumption in hydrodynamic lubricated gears and bearings. This technology has also the benefits of increasing the load-carrying capacity of hydrodynamic lubricated mechanical components. Several inventions were discussed outlining how to apply the boundary slippage technology in gears and bearings for differ Read More

A 3D model of oil film between friction pair was built and based on the principle of computational fluid dynamics (CFD), the distribution law of pressure field, temperature field, and velocity field of oil film were investigated thoroughly. We can find that distribution law of pressure is very regular; from inlet to outlet, the value decreases gradually, and with the highest value of 0.3MPa on the inner radius. Nevertheless, the t Read More

In recent years, many patents have been devoted to develop the walnut mechanical cracking and kernel fetching, kernel shell separation and walnut classification techniques that can significantly improve the walnut shell cracking rate and decrease the walnut kernel breaking rate. However, those machines adjust poorly to different sizes of walnuts, requiring size grading by human with high kernel breaking rate, low Read More

The paper presents an engineering surface technology registered in patents by designing the surface topography for improving the performance of a lubricated sliding contact. According to this technology, the surface topography should be artificially formed with a certain width of the flattened top, or the surface asperity should be truncated in a certain degree with a formed top plateau of a certain width parallel to the surface s Read More

In this work, the critical design factors in the development of an adapter capable of enabling the use of projectiles that are of diameters less than the optimal 0.5 inches (in ballistics, a projectile having a half inch diameter is commonly called a caliber .50 projectile) are explored. This recently- patented slug adapter enables the users of the standard caliber .50 disruptor (the Mk 2 disruptor) to successfully implement sub-caliber Read More

The experimental study was carried out on axial force of shearer drum cutting coal and rock on the coal-cutting test bed, in order to find the influence on the axial force of drum structural parameters when shearer drum cutting coal and rock. The structure parameter of drum is the main object of this research. The results of research indicate that when the cone angle of conical pick is equal to 90°, the axial force on both Read More

To eliminate the static unbalance mass of the propeller through once grinding or counterweighing, the key problem is how to obtain solution of the static unbalance. Based on the suspension theory for the hydrostatic spherical bearing, a special detection device of vertical static balance for large marine propeller is researched and developed. The device can be used to detect the static unbalance mass. Moreover, two effective mo Read More