摘要:
A channel cutting tool may include an arbor that connects to a rotating spindle of a machining tool or a similar spinning part of a machining tool. Two slot cutting blades may be fixedly mounted to the arbor. An inner washer may be fixedly mounted on the arbor between the cutting blades and establish the blade spacing. An outer washer may be rotationally mounted to the inner washer with a smaller thickness to facilitate rotation relative to the two cutting blades. The arbor rotates about a longitudinal rotation axis, which may also the rotation axis for the cutting blades, the inner washer, and the outer washer. The outer washer functions as a depth-limiting safeguard for the channel cutting tool.
摘要:
The invention relates to systems and methods for covering portions of one or more block members after laying of the block members to allow filling of hollow cores in the block members with filler materials. A cover member prevents the filler materials from entering into channels or apertures covered by the cover member. A cover member has a top section and a downwardly depending member extending from the top section. The downwardly depending member extends into a portion of the block, and may engage with the block member to retain the cover member in position.
摘要:
The invention provides novel railroad ties manufactured from novel composite materials that possess excellent physical and performance characteristics matching or exceeding existing concrete RRTs. The RRTs of the invention can be readily produced from widely available, low cost raw materials by a process suitable for large-scale production with improved energy consumption and more desirable carbon footprint and minimal environmental impact.
摘要:
Provided are derivatives substituted by urea associated with 4-substituted-(3-substituted-1H-pyrazole-5-amino)-pyrimidine-2-amino of formula (I), wherein these compounds may selectively regulate or inhibit an information transmission process controlled by natural or variant tyrosine kinase. Also provided are preparation methods and uses of the compounds.
摘要:
Apparatus for gas delivery (10), particularly at low pressure and volume. The apparatus has a gas reservoir, a delivery line between the gas reservoir (14) and a gas outlet (68) and a first supply line between a first inlet connect able to a first gas supply and the gas reservoir. A pressure control line is provided with an inlet connect able to a second gas supply. The pressure control line is coupled to the gas reservoir to thereby control the pressure in the gas reservoir.
摘要:
Apparatus for gas delivery (10), particularly at low pressure and volume. The apparatus has a gas reservoir, a delivery line between the gas reservoir (14) and a gas outlet (68) and a first supply line between a first inlet connect able to a first gas supply and the gas reservoir. A pressure control line is provided with an inlet connect able to a second gas supply. The pressure control line is coupled to the gas reservoir to thereby control the pressure in the gas reservoir.
摘要:
A substrate, preferably constructed of a ductile material and a tool having the desired shape of the resulting device for contacting contact pads on a test device is brought into contact with the substrate. The tool is preferably constructed of a material that is harder than the substrate so that a depression can be readily made therein. A dielectric (insulative) layer, that is preferably patterned, is supported by the substrate. A conductive material is located within the depressions and then preferably lapped to remove excess from the top surface of the dielectric layer and to provide a flat overall surface. A trace is patterned on the dielectric layer and the conductive material. A polyimide layer is then preferably patterned over the entire surface. The substrate is then removed by any suitable process.
摘要:
An exhaust treatment system is provided. The system may include a particulate trap configured to remove one or more types of particulate matter from an exhaust flow, the exhaust flow including at least a portion of a totality of exhaust gases produced by an engine. The system may further include a burner assembly configured to increase a temperature of gases in the exhaust flow at a location upstream from the particulate trap. The burner assembly may include an exhaust inlet oriented in a direction along a first axis and configured to direct the exhaust flow into the burner assembly and an exhaust outlet oriented in a direction along a second axis at an angle relative to the first axis, the exhaust outlet being configured to direct the exhaust flow out of the burner assembly toward the particulate trap. The burner assembly may also include a fuel injector having a longitudinal axis in substantial alignment with the second axis. In addition, the burner assembly may include a cylindrical combustion chamber member defining a combustion chamber, having a longitudinal axis in substantial alignment with the longitudinal axis of the fuel injector, and configured to house a flame that is fueled by the fuel injector within the combustion chamber. The burner assembly may further include an exhaust flow distribution member configured to substantially evenly distribute exhaust about the combustion chamber member and in a heat exchange relation to the combustion chamber member.