摘要:
What are disclosed are compounds, useful as intermediates in the preparation of substituted penem compounds, of the formula ##STR1## wherein R is a removable esterifying group, R.sup.1 is lower alkyl or phenyl, R.sup.2 is hydrogen, lower alkyl, lower alkoxyalkyl, lower alkanoyloxyalkyl, or tri-lower alkylsilyloxyalkyl, and R.sub.a, R.sub.b, R.sub.c, R.sub.d, and R.sub.e are hydrogen, aliphatic cycloaliphatic hydrocarbon, free or esterified carboxyl, halo, or cyano, and any two of R.sub.a -R.sub.e, taken together, may form a cycloaliphatic ring.
摘要:
What are disclosed are compounds, useful as intermediates in the preparation of substituted penem compounds, of the formula ##STR1## wherein R is a removable esterifying group, R.sup.2 is hydrogen, lower alkyl, lower alkoxyalkyl, lower alkanoyloxyalkyl, or tri-lower alkylsilyloxyalkyl, and R.sub.a, R.sub.b, R.sub.c, R.sub.d, and R.sub.e are hydrogen, aliphatic cycloaliphatic hydrocarbon, free or esterified carboxyl, halo, or cyano, and any two of R.sub.a -R.sub.e, taken together, may form a cycloaliphatic ring.
摘要:
What are disclosed are compounds, useful as intermediates in the preparation of substituted penem compounds, of the formula ##STR1## methods for making such compounds from intermediates of the formula ##STR2## by reaction of the latter with a nucleophilic compound, methods for making such intermediates from compounds of the formula ##STR3## by reaction of the last-mentioned compounds with a tervalent phosphorus compound, and methods for making said last-mentioned compounds by cyclizing compounds of the formula ##STR4## with a tervalent phosphorus compound.
摘要:
The present invention is a method and apparatus for terminating wires in terminals while monitoring the quality of the termination. Quantitative data is collected during the terminating operation, analyzed to determine whether or not the quality of the termination is within acceptable limits, and appropriate machine mechanisms are adjusted, when required, to assure continued high quality output. This is done in a completely automated environment.
摘要:
An electrical connector (100) includes a first housing member (1), a second housing member (2) coupled with the first housing member to define an internal space therebetween, and a subassembly (3) received in the space. The first housing member has a first mating face (11) defining a first upper and lower cavities (111, 112). The second housing member has a second mating face (21) defining a second upper and lower cavities (211, 212). The subassembly includes a pair of terminal modules (31, 32) and a pair of surge suppressing devices (33, 34). The upper and lower terminal modules respectively include a PCB (311, 321) and a number of front and rear conductive terminals (312, 313, 322, 323) mounted on the PCB. The front and rear terminals are exposed in a corresponding first and second cavities. The surge suppressing devices are mounted respective one of the PCBs and electrically connect with corresponding front and rear terminals.
摘要:
The present invention is directed to the accurate and automatic determination of crimp height of a terminal being crimped onto a wire. The crimping apparatus includes a conventional crimping press having a reciprocating ram and base, each carrying a mating half of a crimping die set. A strain gage is arranged to measure crimping forces imposed on the terminal being crimped and a linear sensor measures the position of the ram during the crimping process. As the ram descends and the crimping begins, the force as indicated by the strain gage is monitored until it reaches a predetermined value. Monitoring continues until the force reaches substantially zero, at which time the position of the ram, as indicated by the linear sensor, is translated into crimp height.
摘要:
The present invention is a method of determining the crimp height of an electrical terminal being crimped to a wire during the production crimping cycle. The method includes collecting a plurality of force and position data element pairs which are measured and sampled during the actual crimping operation. These data element pairs, representing the work curve of the operation and are analyzed to find the position of the ram when the crimping die set just disengages the terminal being crimped. The position of the ram at this point is then translated into the crimp height of the crimped connection. The analysis of the data element pairs includes a filter to remove inconsistent or extraneous data element pairs which could adversely affect the result by indicating an erroneous crimp height.
摘要:
An electrical adapter (100) includes a first housing member (1), a second housing member (2) coupled with the first housing member, and a number of first, second and third conductive terminals (312, 322, 332). The first housing member has a first mating face (11) defining a first upper and lower receptacles (111, 112). The second housing member has a second mating face (21) defining a second receptacle (211). The first, second and third conductive terminals (312, 322, 332) respectively have contacting portions (314, 324, 334) extending into corresponding receptacles. Latching means are arranged between the first and second housing members so as to fasten the first housing member and the second housing together.
摘要:
The present invention is a method of determining the quality of a crimped electrical connection by collecting force and displacement data during the crimping cycle and comparing that data with data that represents standard crimped connections of known high quality. Of the collected data, selected portions are related to corresponding portions of the standard data and, if a deviation exists of more than a specific amount, a reject signal is generated and displayed to the machine operator. The standard data is continually updated to account for slowly changing environmental conditions that occur over a relatively long period of operation.
摘要:
An automated machine, such as a cable making machine, for terminating wires to terminals. The machine includes mechanisms for selecting a desired wire type and terminal applicator, and then for automatically setting the applicator to the proper insulation crimp height corresponding to the selected wire type and terminal type combination. The insulation crimp height may then be reset to another value for a subsequently selected different wire type.