摘要:
One embodiment of the invention includes a frictional damping insert including a body constructed and arranged to be incorporated into a product and to provide frictional damping of the product, the body including lines of weakness constructed and arranged to segment the body into separate sections upon exposure to a molten material.
摘要:
A component includes a cast portion and an insert. The cast portion includes a sacrificial suspension device. The insert is configured to provide damping to the component. The sacrificial suspension device is dissolved during a casting process, into a molten material, forming the cast portion such that the insert is fully encapsulated by the cast portion, including the dissolved suspension device.
摘要:
A method for forming a rotor for an induction motor includes providing a rotor core including a plurality of conductor bar grooves having first and second ends corresponding to first and second ends of the rotor core wherein the conductor bar grooves are progressively larger closer to the ends of the conductor bar grooves. The rotor core is placed into a casting mold, and molten metal is introduced into a first end of the casting mold. The molten metal flows from the first end of the casting mold through the plurality of conductor bar grooves to a second end of the casting mold. The molten metal solidifies to form conductor bars in the plurality of conductor bar grooves and to form shorting rings across exterior portions of the end elements within the first and second ends of the casting mold.
摘要:
A substantially hollow cylindrical stator core having a longitudinal axis includes a plurality of winding slots longitudinally parallel with the longitudinal axis each having first and second ends wherein the slots taper progressively larger closer to the ends of the slots.
摘要:
A mold for forming a plurality of rotors includes a plurality of lamination stacks, wherein each lamination stack defines at least one void therethrough; a tube having a central longitudinal axis, wherein each lamination stack is concentrically spaced apart from the tube to define a channel therebetween; a plurality of washers each having a shape defined by a first diameter and a second diameter that is greater than the first diameter, wherein each washer is configured to concentrically abut the tube and define a feed conduit interconnecting with the channel; and a shell disposed in contact with each lamination stack and concentrically spaced apart from each washer to define a plurality of ducts, wherein each duct is interconnected with the at least one void of at least one lamination stack. A mold system and a method of forming a plurality of rotors are also described.
摘要:
A system and method for calculating a space required for a tenant in a building includes determining the areas of rooms required by the tenant. A circulation factor for each of the rooms based on the area of each room is calculated. The total of the room areas and the circulation factors are added to determine a pure space required by the tenant. The losses in actual usable space are determined for a building and an inefficiency factor is calculated based on these losses. The pure space is multiplied by the inefficiency factor to obtain a building efficiency loss. The building efficiency loss is added to the pure space to obtain the space required for the tenant in the building. The system may be configured on a network computer system or a standalone computer.
摘要:
A system and method for promoting competitive bidding in an online auction that has a bidder, a favored bidder, and a sponsor, including receiving bids from the bidder and the favored bidder, deriving a relative spread, determining a market position for the bidder and the favored bidder, and displaying feedback information to at least one of the favored bidder or the bidder. The relative spread represents a minimum premium amount required before the sponsor awards a contract to a non-favored bidder. The market position reflects a comparison of the bid of the favored bidder to the bid of the bidder using the relative spread and the feedback information shows the market position.
摘要:
A method of forming a hollow sand core involves placing a preform into a cavity defined in a mold, where the preform has a predetermined configuration. A granular material is then introduced into the mold cavity and around the preform. The introduced granular material is established around the preform to form the hollow sand core. The preform is deformed in a manner sufficient to enable removal of the preform from inside the hollow sand core, and then is removed from the sand core. The removal of the preform exposes a hollow portion of the sand core.
摘要:
A method of bonding a metal to a substrate involves forming a plurality of nano-features in a surface of the substrate, where each nano-feature is chosen from a nano-pore and/or a nano-crevice. In a molten state, the metal is over-cast onto the substrate surface, and penetrates the nano-features. Upon cooling, the metal is solidified inside the nano-features, where the solidification of the metal forms a mechanical interlock between the over-cast metal and the substrate.
摘要:
A system and method for calculating a space required for a tenant in a building includes determining the areas of rooms required by the tenant. A circulation factor for each of the rooms based on the area of each room is calculated. The total of the room areas and the circulation factors are added to determine a pure space required by the tenant. The losses in actual usable space are determined for a building and an inefficiency factor is calculated based on these losses. The pure space is multiplied by the inefficiency factor to obtain a building efficiency loss. The building efficiency loss is added to the pure space to obtain the space required for the tenant in the building. The system may be configured on a network computer system or a standalone computer.