摘要:
Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the elastomeric liner is to be bonded to the interior of the stator, bonding is improved by electrically etching the interior of the stator during the electrochemical machining process to produce a roughened surface.
摘要:
A vertical takeoff and landing aircraft is disclosed that includes a support structure having a motor mounted vertically thereto, with the motor having a propeller for rotation in a horizontal plane. A power supply for the motor is mounted to the support structure below the motor and electrical coupled thereto. A plurality of fins are attached by their first end to the power and extending radially outward therefrom. Vertical posts have there first ends attached to the second end of the fins and extend upward to the plane of rotation of the propeller. A ring is mounted horizontally to the second ends of the plurality of vertical posts surrounding the propeller. The torque produced by the drag of fins as the aircraft rotates in the opposite direction reacting the torque of the propeller equal to the torque of the propeller necessary to achieve hover. The rotational inertia of aircraft is made equal to the rotational inertia of the propeller.
摘要:
It has been found that arginine serves to increase the receptivity of cells to lymphokines such as interleukin-2 and interferon. An improved method for treating a mammal with one or more lymphokines is disclosed wherein said improvement comprises administering said one or more lymphokines to said mammal in combination with an amount of arginine effective to increase the receptivity of cells of said mammal to said one or more lymphokines.
摘要:
A virtualization environment is provided to include a security management instance and an application instance. The application instance is separated from the security management instance and includes a first operating system and a particular software application. The security management instance includes a second operating system and one or more security tools to provide security for the particular application. Data for the application instance is received at the security management instance, the data is processed using at least one of the security tools, and the processed data is securely passed from the security management instance to the application instance.
摘要:
This invention is related to a portable texture-spraying apparatus for uniformly dispersing a viscous material. This apparatus broadly includes a tank assembly having a body with an inner wall that defines a sealed cavity, and a piston assembly slidably disposed within the sealed cavity. The piston assembly divides the sealed cavity into an air-side chamber and a material-side chamber by providing an airtight seal therebetween. Additionally an air-control assembly is provided that broadly includes a pressure-control mechanism configured for receiving compressed air and routing a controlled pneumatic pressure to a directional valve configured for adjusting between a dispensing mode and a loading mode. In dispensing mode, the directional valve routes the controlled pneumatic pressure to the air-side chamber biasing the piston assembly toward the material-side chamber. In loading mode, the directional valve releases the air-side chamber to the atmosphere allowing for filling the material-side chamber with viscous material.
摘要:
An ECM apparatus includes a stationary cathode tool having a passage, and a drive mechanism for moving a bar-shaped workpiece through the passage of the cathode tool while simultaneously rotating the workpiece. Electrolyte flows, from a manifold on one end of the cathodic tool to a manifold at the other end, through the passage, between the wall of the passage and the workpiece. An electric current is simultaneously established in the electrolyte, between the wall of the passage and the workpiece. The internal shape of the cathodic tool wall has a gradual transition from a circular entry opening to a lobed exit opening, and lobes formed in the wall of the tool are shaped so that they twist in the direction of workpiece rotation, in order to form helical lobes in the workpiece.
摘要:
An inspection tester system for testing for explosives. The tester includes a body and a swab unit adapted to be removeably connected to the body. At least one reagent holder and dispenser is operatively connected to the body. The reagent holder and dispenser contains an explosives detecting reagent and is positioned to deliver the explosives detecting reagent to the swab unit. A heater is operatively connected to the body and the swab unit is adapted to be operatively connected to the heater.
摘要:
Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the elastomeric liner is to be bonded to the interior of the stator, bonding is improved by electrically etching the interior of the stator during the electrochemical machining process to produce a roughened surface.