摘要:
A splice closure contains multiple splice trays that can be individually pivoted and accessed so that the splice closure is capable of optimally carrying and providing access to numerous optical fibers and optical fiber splices. The splice closure has a housing defining an internal cavity and at least one opening to the internal cavity. An end cap is capable of occluding the opening of the housing to provide an enclosed configuration. A support frame has opposite front and rear ends, the front end of the support frame is connected to the end cap, and the support frame is capable of being positioned within the internal cavity of the housing during the enclosed configuration. The support frame extends in a longitudinal direction between the front and rear ends, and defines a frame axis that extends in the longitudinal direction. The multiple splice trays are pivotally carried by the support frame so that there are a plurality of axes of rotation that are generally parallel to the frame axis and about which the splice trays are respectively pivotable. Biasing mechanisms are operative for releasably holding the splice trays to the support frame.
摘要:
Disclosed is a light waveguide splice closure having lifting handles for removing the closure end cap. The closure contains an open top vessel for holding waterblocking material.
摘要:
Masonry structures are susceptible to cracking due to distortion caused by movement of their foundation, vibration, and/or drying out subsequent to the construction of the structure. Such cracking often occurs after the structure has been painted. This results in the crack being transmitted through the coating of paint. Upon repainting of the masonry structure new cracks often develop and are transmitted through the paint coating within a short period of time.The invention discloses a crack resistant coating for masonry structures and a process for applying it, wherein the coating comprises:(1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and(2) a conventional coating layer which is contiguous to and covers the crack absorbing layer.
摘要:
A non-stretched, negative birefringent copolyester film, which has been solution cast from toluene and/or MIBK and mixtures of these with other solvents on a substrate, and has a Δn⊥ of >0.02 and a DP between 0.90 and 1.10.
摘要:
Masonry structures are susceptible to cracking due to distortion caused by movement of their foundation, vibration, and/or drying out subsequent to the construction of the structure. Such cracking often occurs after the structure has been painted. This results in the crack being transmitted through the coating of paint. Upon repainting of the masonry structure new cracks often develop and are transmitted through the paint coating within a short period of time.This invention discloses a crack resistant coating for masonary structures comprising:(1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and(2) a conventional coating layer which is contiguous to and covers the crack absorbing layer.
摘要:
The present invention is directed toward transparent films prepared from soluble aromatic copolyamides with glass transition temperatures greater than 300 C. The copolyamides, which contain pendant carboxylic groups are solution cast into films using N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), or other polar solvents. The films are thermally cured at temperatures near the copolymer glass transition temperature. After curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant. The films are useful as flexible substrates for microelectronic devices.
摘要:
The present invention is directed toward transparent films prepared from soluble aromatic copolyamides with glass transition temperatures greater than 300 C. The copolyamides, which contain pendant carboxylic groups are solution cast into films using N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), or other polar solvents. The films are thermally cured at temperatures near the copolymer glass transition temperature. After curing, the polymer films display transmittances>80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant. The films are useful as flexible substrates for microelectronic devices.
摘要:
The present invention provides novel selenium containing additives for use as supplements in livestock feeds and processes for producing same. The novel supplements of the present invention use starch, especially wheat starch, as a carrier for the selenium-containing component and are remarkably homogeneous as regards distribution of the selenium content.
摘要:
A multiple access communications system for use between a base and a plurality of substations and having a first channel for transmission of data from the base to the substations and a second channel for transmission of data from the substation to the base. The system has, in use, provision at the base and/or substations for assigning each of the substations to one of a plurality of groups, and for allocating, from the base, each of a plurality of slots in the second channel to a particular group. There is provision at the base for reporting to the substation via the first channel the number of substations in each group, and there are analyzing means at each substation for analyzing the number of substations in each of the groups and for making a judgement based on those numbers as to which group to assign each respective substation to in order for that substation to communicate next with the base in the slot or slots allocated to that group.
摘要:
Masonry structures are susceptible to cracking due to distortion caused by movement of their foundation, vibration, and/or drying out subsequent to the construction of the structure. Such cracking often occurs after the structure has been painted. This results in the crack being transmitted through the coating of paint. Upon repainting of the masonry structure new cracks often develop and are transmitted through the paint coating within a short period of time.This invention discloses a crack resistant coating for masonry structures comprising:(1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and(2) a conventional coating layer which is contiguous to and covers the crack absorbing layer.