摘要:
Described are various embodiments of a tapping apparatus and accessory for tapping a hole. The apparatus generally comprises a body defining a longitudinal cavity therein for longitudinal alignment with the hole. A tap assembly comprises opposed tapping and driving elements engaged within the cavity to rotate in longitudinal alignment therewith and to be longitudinally guided thereby in operation.
摘要:
Super Bainite Steel is described comprising between 90% and 50% bainite, the rest being austenite, in which excess carbon remains within the bainitic ferrite at a concentration beyond that consistent with equilibrium; there is also partial partitioning of carbon into the residual austenite. Such bainite steel has very fine bainite platelets (thickness 100 nm or less). In this specification the expression “Super Bainite Steel” is used for such steel. In particular, the impact of varying the manganese content to achieve fast transformation times, and hence low manufacturing costs without the presence of expensive alloying materials is discussed. In one embodiment of the invention a Super Bainite Steel comprises in weight percent: carbon 0.6 to 1.1%, silicon 1.5 to 2.0%, manganese 0.5 to 1.8%, nickel up to 3%, chromium 1.0 to 1.5%, molybdenum 0.2 to 0.5%, vanadium 0.1 to 0.2%, balance iron save for incidental impurities. In particular it was noted that excellent properties were obtained if the manganese content is about 1% by weight. Various processes for making the Super Bainite Steel are discussed, but a particularly useful process includes the step of cooling the steel from an austenite quickly enough to avoid transformation to pearlite and transforming the steel to bainite at a temperature in the range 190° C. to 2500° C. The patent discusses the impact of changing the transition temperature on hardness, and conclude that the invention can provide a very hard steel (>630HV) It is also noted that suitable pearlite can be produced for cutting drilling and shaping, before final transformation to Super Bainite Steel.
摘要:
An electric lamp (12) includes a generally cylindrical lamp vessel (16) which encloses an interior space (18). A source of illumination (20) is disposed within the interior space. A reflective layer (28) is disposed on a light transmissive first end (22) of the lamp vessel. The reflective layer reflects light emitted by the source of illumination into the interior space. The lamp is suited to use in a vehicle headlamp. The reflective layer enables the lamp to have a higher efficiency than a conventional lamp with a black end coat.
摘要:
A system and method for the simulation and modeling of biopharmaceutical batch process manufacturing facilities using process time lines is described herein. The system employs an eleven-field delimited string code which specifies the unit identifier code and the iteration value for each of the ten levels of nested scheduling cycles of the biopharmaceutical drug production process being modeled. The method includes generating a process time line using operational parameters, a block flow diagram, and a set of scheduling cycles for each of a sequence of unit operations. The process time line is used as a tool for batch processing and facility design.
摘要:
A ceramic arctube preferably for a high pressure discharge lamp. The ceramic arctube can have an anti-reflection interference coating on the outside or inside surface of the bulb section of the arctube. The outside and/or inside surface of the outer wall of the bulb section of the arctube can be substantially spherical to increase efficiency. The wall thickness of the outer wall of the bulb section can be shaped to lens rays from the arc toward a preselected region of a reflector optically coupled to the arctube to increase efficiency.
摘要:
Apparatus for an interactive video system comprising a transmissive projection screen (8) from which an image projected on to the rear surface is visible from the front side but not visible from the rear side, a projector (20) to project display images on to the rear surface of the screen (8); and a video camera (22) positioned to video a user (2) in front of the screen (8). The user (2) effects a writing action on the screen (8) using a dry pen (24) comprising infrared LEDs (64) which operate when the dry pen (24) is pressed against the screen (8). These emissions are detected and position decoded, and a corresponding image projected on the screen (8) so it appears as direct writing to the user (2). The videoed image of the user and the input written data may be combined and transmitted during a videoconference to corresponding apparatus used by a further user (4) who thereby sees interaction between the first user (2) and the written data.
摘要:
A system of binding organizational intelligence to a server machine EO whereby it is no longer distributed throughout both the client(s) and the server(s) but managed exclusively within the RDBMS. An RDBMS portal software tool possessing analytical and data manipulative functionalities, but by design no organizational intelligence, is installed and configured at an end user computer. A data table and stored procedure are created in the RDBMS. The table serves registry and coordination functions, while the stored procedure functions as a menu procedure. The tool is the common interface for all stored procedures and for the user. The user passes instructions to the tool, and the tool passes instructions to the RDBMS to execute stored procedures. The tool receives back from the RDBMS the data sets which results from their execution and provides them to the user. The user may manipulate the data and perform analyses using the tool.
摘要:
A door closer power adjusting device for use with a door closer having a spindle driven by a compressed spring with a movable plate for adjusting an amount of compression of said spring, or with an adjusting screw for adjusting an amount of compression of said spring, between a first high level of compression and a second low level of compression. A powered unit is provided for moving the plate in a first direction to achieve the second low level of compression and in a second direction to achieve the first high level of compression. A user engageable switch is used to activate the powered unit in the first direction and a first switch is arranged to be engaged upon the spring being compressed to the second low level of compression to deactivate the powered unit. A timing circuit is used to activate the powered unit in a second direction after the passage of a predetermined amount of time. A second switch is arranged to be engaged upon the spring being compressed to the first high level of compression to deactivate the powered unit.
摘要:
A cannula for use as for example on the inflow end of an implantable intravascular heart pump. The stiffness of the cannula is differentiated along its length, wherein its proximal end is stiffer than its distal end, while a substantially constant wall thickness is maintained along its entire length. Attached to the flexible distal end, is a rigid tip component having inlet ports and an interior surface profile that minimizes the risk of hemolysis and thrombogenisis.
摘要:
A steel (known as super bainite steel) containing between 90% and 50% bainite, the rest being austenite, in which excess carbon remains within the bainitic ferrite at a concentration beyond that consistent with equilibrium; there is also partial partitioning of carbon into the residual austenite. In one embodiment of the disclosure, the steel contains in weight percent: carbon 0.6 to 1.1%, silicon 1.5 to 2.0%, manganese 0.5 to 1.8, nickel up to 3%, chromium 1.0 to 1.5, molybdenum 0.2 to 0.5%, vanadium 0.1 to 0.2%, balance iron save for incidental impurities. Excellent properties are obtained if the manganese content is about 1% by weight.