摘要:
A fire rated wall structure includes a channel-shaped top track and bottom track each having male protrusions formed along their side walls. The wall structure further includes at least one stud member interconnecting the top and bottom tracks. The stud member comprises a stationary portion and a slip extension slidably nested within the stationary portion. Female recesses are formed in a terminus end of each of the slip extension and stationary portion and are adapted to nest with male protrusions of the top and bottom tracks. A slot formed within the slip extension accommodates fasteners initiated from a panel member and which passes through the stationary portion side wall and extends into the slot to allow relative sliding motion between the slip extension and the stud member. A top overcap disposed in overlapping relation to the top track includes a male protrusion for slidingly bearing against the panel member.
摘要:
A method for forming a joining profile in a structural member comprises providing an assembly having a base member, a forming body and a pair of side anvils having profiles formed therewithin. The method further comprises mounting the structural member on the base member, advancing the forming body toward the structural member such that the structural member is clamped to the base member, urging the side anvils toward flanges of the structural member, forming a profile in each of the flanges, and engaging protrusions of the side anvils with the web such that opposing portions of the web are forced upwardly by the protrusions at locations adjacent to each one of the flange profiles in order to accommodate formation of the flange profiles in the structural member. Formation of the joining profiles in the structural members allows for detachable engagement thereof with another member having a corresponding mating profile.
摘要:
A method for forming a joining profile in a structural member comprises providing an assembly having a base member, a forming body and a pair of side anvils having profiles formed therewithin. The method further comprises mounting the structural member on the base member, advancing the forming body toward the structural member such that the structural member is clamped to the base member, urging the side anvils toward flanges of the structural member, forming a profile in each of the flanges, and engaging protrusions of the side anvils with the web such that opposing portions of the web are forced upwardly by the protrusions at locations adjacent to each one of the flange profiles in order to accommodate formation of the flange profiles in the structural member. Formation of the joining profiles in the structural members allows for detachable engagement thereof with another member having a corresponding mating profile.
摘要:
A self-adjusting, dynamic floating fixture for ultrasonic welding having a base, a nest assembly for supporting a part to be welded, and a plurality of bearing assemblies operably disposed between the base and the nest assembly to permit the nest assembly to move relative to the base to minimize marking and flash damage to the part to be welded.
摘要:
A phosphorus vanadium oxide catalyst for the oxidation of a C.sub.4 hydrocarbon. The catalyst comprises a shaped body having a volume, or a fixed bed comprising shaped bodies having an average volume, of at least about 0.02 cc, and contains a promoter selected from among Bi, Sb, Ge, Ti, Zr, La, Ce, Ni, Zn, U, Sn, Si or mixtures thereof. The promoter is present in a proportion that enables the catalyst to have a developed surface area of at least about 28 m.sup.2 /g, and to exhibit a weight/area productivity of at least about 3.5 mg maleic anhydride/m.sup.2 -hr and/or a weight/weight productivity of at least about 100 g maleic anhydride/kg.cat.-hr. when contacted with a gas containing 2.4% by volume n-butane in air, at a gas flow volume to catalyst weight ratio of 2180 cc/g-min., under a pressure of 1.055.times.10.sup.2 -kPa-G, and at a temperature sufficient to maintain a hydrocarbon conversion of 85 mole percent. Methods for the preparation of the catalyst include activation by ANST.
摘要:
A portable timber mill comprising a main superstructure (3) and a platform mounted on the superstructure being comprised of at least one detachable bench (15) on which cutting and sorting operations are performed. Each bench has infeed means (9), cutting means (16) conveyor means (17), sorting and separation means (70, 71) whereby timber can be processed according to a time ordered processing sequence along a predetermined route on the said at least one bench until a predetermined size of timber is achieved. The superstructure is configured in the form of a transportable trailer.
摘要:
This invention provides novel processes utilizing compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2.
摘要:
This invention provides novel compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2.
摘要:
This invention provides novel compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2.
摘要:
This invention provides novel compositions comprising substituted polyamines as acid gas scrubbing solutions and methods of using the compositions in an industrial system. The invention relates to the use of such polyamine compounds in industrial processes to remove acidic contaminants from natural and industrial fluid streams, such as natural gas, combustion gas, natural gas, synthesis gas, biogas, and other industrial fluid streams. The compositions and methods of the invention are useful for removal, absorption, or sequestration of acidic contaminants and sulfide contaminants including CO2, H2S, RSH, CS2, COS, and SO2.