摘要:
A corner drift connector for preventing damage to exterior walls of buildings during wind, earthquake, or other building-deforming events is described. The corner drift connector is slidably attached to each of two angled walls which form a corner of a building. Slots in flanges of the corner drift connector facilitate utilizing connectors to attach the corner drift connector to the walls while allowing relative motion between the walls and the connector. A cover placed outside the corner drift connector conceals the connector and its intersections with the walls.
摘要:
A series of spaced-apart light gauge cold formed steel studs underlie an elongated light gauge cold formed steel channel or box. A series of joist supports are connected to the channel and a series of joists, formed of a light gauge cold formed steel, are connected to the joist supports and extend outwardly from the box. Decking is supported on the joist. Concrete is poured into the channel to form a reinforced header or beam, and concrete is also poured onto the decking to form a concrete floor. Together, the concrete floor and header form a monolithic concrete structure that enables the joist to be misaligned with studs.
摘要:
A connector assembly for a building structure is provided. The connector assembly includes an elongated track that is mounted to a first member of a building frame structure. A connecting member is connected to the elongated track and retained within a pair of opposed channels that form a part of the track. Connected to the connecting member is a second member of the building frame structure. Formed in the connecting member is at least one elongated slot that permits the connecting member to be connected to the second member and for there to be relative movement between the connecting member and the second member. Further, the connecting member is slidable back and forth within the elongated track. Thus, it is appreciated that bidirectional movement between the first and second members can be accommodated by the connecting member sliding back and forth along the track on one hand and by there being relative movement about the connection between the connecting member and the second member.
摘要:
A connector for interconnecting two building members together. The connector, in one embodiment, includes first and second plates secured together. Each plate includes one or more elongated slots wherein the elongated slots of one plate are oriented at an angle of approximately 90° with respect to the slots formed in the other plate. Fasteners extend through the slots in the plates and connect the plates of the connector to two building members such as a horizontal building member and a vertical building member. Once connected, one of the building members is free to move with respect to the other building member while the connector is connected to the two building members. In another embodiment, the connector is slidable within a track. In this embodiment, a portion of the connector extends from the track and connects to one of the building members while the track connects to the other one of the building members.
摘要:
A tape dispensing unit (10), feeding tear tapes (12, 13), to a continuous portion of packaging material (14). The tear tape is applied to the packaging portions so that consumers may easily open the assembled packages. Tape is applied to packaging from a reel. A reserve reel also holding tape is provided. When the end of the tape on the reel in use is reached the tape dispensing unit splices together the end of the tape in use with the beginning of the reserve reel, so that tape is fed continuously to the packaging material.
摘要:
A method for controlling the use of oligonucleotide sequences released from arrays, comprises synthesizing a chemical array of oligonucleotides on a substrate under conditions for producing an array of cleavable oligonucleotides that are blocked from enzymatic reactions after cleavage. Methods may also include receiving a chemical array of cleavable oligonucleotides on a substrate, and cleaving the oligonucleotides from the array, wherein the oligonucleotides are blocked from enzymatic reactions after cleavage. Arrays, populations of oligonucleotides and kits are also provided to facilitate the methods.
摘要:
A system for managing replacement components for equipment having a plurality of components each with a limited useful life has a computer with a processor. The system includes a computer program module for defining a duty profile comprising a plurality of usage cases for the equipment, each usage case involving two or more of the plurality of components and specified operating conditions assumed to be experienced by the involved components during the execution of each of the usage cases. There are also a computer program module for determining a theoretical useful life for each component involved in a duty profile, the theoretical useful life being based on component useful life data under the specified operating conditions; and sensors for determining and monitoring the occurrence of equipment operation corresponding to a usage case and measuring the actual operating conditions experienced in the operation and the number of such operations. A further computer program module computes an adjusted theoretical useful life for a component that has experienced one or more operations, based on a comparison of actual operating conditions to operating conditions assumed to be experienced in the operation of the usage case.
摘要:
A piezoelectric coaxial cable comprises a central stretchable electrical conductor (1), preferably formed from a low melting point metal alloy, a piezoelectric intermediate layer (2), preferably formed from a vinylidene fluoride polymer which has been stretched and radially polarized to render it piezoelectric, and an outer electrical conductor (3).The intermediate layer has a ratio R of its internal radius to its external radius which is preferably not more than 0.5 and more preferably not more than 0.4. This construction enables coaxial cables to be formed without voiding or breaking of the internal conductor during stretching.
摘要:
A system for reducing fouling and improving efficiency in a coal-fired power plant that may include: 1) an analyzer grid, the analyzer grid including a plurality of sensors that measure gas characteristics through an approximate cross section of a flow through a boiler of the coal-fired power plant; 2) a plurality of air injectors with enhanced controllability; 3) means for analyzing the measurements of the gas characteristics; and 4) means for controlling the air injectors with enhanced controllability. The analysis of the measurements of the gas characteristics may include analyzing the measurements to determine zones of non-homogeneous flow.
摘要:
A support device for supporting the forearm of a worker in a generally horizontal plane comprising: (a) an attachment member for affixing the support device to a support member; (b) a lower support member having a forward end and a rearward end, the rearward end being pivotally mounted to the attachment member for free pivotal rotation of the forward end of the lower support member within an arc with respect to the attachment member due to force applied to the lower support member when the arm of the worker is moved in the horizontal plane; and, (c) an upper longitudinally extending support member for supporting the forearm of a worker, the upper member having a forward end and a rearward end, the upper support member being slidably mounted on the lower support member for movement of the upper support member in the longitudinal direction between a recessed position and an extended position with respect to the lower support member due to force applied to the upper support member when the arm of the worker is moved forwards or rearwards.