摘要:
Corrosion inhibiting compositions for addition to aqueous acid metal cleaning compositions for use in the cleaning of surfaces of metal parts which are contaminated with water insoluble, acid soluble deposits, wherein the corrosion inhibiting composition contains a partially hydrolyzed protein which is either a partially hydrolyzed gelatin, a partially hydrolyzed casein or a mixture thereof wherein the partially hydrolyzed protein has a total nitrogen content of from about 10 to about 20% by weight and a free amino group nitrogen content of from about 4 to about 30% based on the total nitrogen content. The invention also relates to aqueous acid solutions containing the corrosion inhibitor of the invention and to processes for treating contaminated metal parts with such acid compositions.
摘要:
Acid cleaning compositions containing an inhibitor for cleaning metal surfaces, processes for cleaning metal surfaces therewith, and concentrates useful in forming the acid cleaning compositions. The present acid cleaning compositions contain an acid, a Mannich base, a thiourea, an alkyl trimethyl ammonium halide and/or an alkyl (C.sub.8 -C.sub.9) phenoxypolyethoxy ethanol, and a nonionic surfactant which is a condensate of poly(oxyethylene) and poly(oxypropylene) groups.
摘要:
An electrical connector is provided with a housing, female contacts, retainer clips, and contact spacers. The contact spacers surround the female contacts, have cantilevered flared legs, and have a top shelf. The legs are deflected when the spacer and female contact are inserted into the housing to form a friction grip between the spacer and the housing and, between the spacer and the female contact. The top shelf has an aperture to limit the size of male contacts to be passed therethrough and, support the bottom of the retainer clips.
摘要:
An automatic process and apparatus for producing terminated coaxial cable jumpers. A control system utilizing a microprocessor accepts push button entry of variables such as job identification number, quantity to be produced, jumper length, and jumper configuration. In addition to the control system, the apparatus includes a feed-measure-cut system for introducing raw lengths of jumpers into the process and a conveyor system for transporting the jumpers, in stepped sequence, to a series of work stations which operate on at least one end of each jumper and finally result in completed jumpers. Tests are performed at some of the work stations and those jumpers which fail any of the tests are removed from the process.
摘要:
An electrical connector assembly including a grounding-mounting track and at least one ground module fixedly connected to the track. The track is adapted to have a plurality of signal modules modularly connected to it. The ground module has a housing with at least one electrical terminal therein. The electrical terminal is fixedly electrically connected to the track.
摘要:
The housing 156 has an elongated chamber 158 therein, which extends along a generally horizontal axis and has a port 160 at one end thereof, and another port 188 in the top thereof. A pin 140' is mounted in the chamber at the port 160 to be advanced and released relatively outwardly and inwardly of the housing along the axis when clamping and releasing the shoe. A coiled spring 168 is mounted in the chamber rearwardly of the pin, with a driver 170 interposed therebetween; and a lever 208 is pivotally mounted in the top port 188 of the housing on the chamber adjacent end portion of the pin, for rotation about a fulcrum 216 on the pin transverse the axis. Cam surfaces 178, 170 on the lower end portion 214 of the lever and the driver are cooperatively engaged with one another about the fulcrum to alternately compress and relax the spring, and advance and release the pin relatively outwardly and inwardly of the housing respectively, when the lever is rotated in the opposing angular directions about the fulcrum.
摘要:
A system for connecting electrical connectors to a mounting track. The track can have signal connectors snap-lock connected to it. The track can also have grounding connectors connected to it. The track has a snap-lock ledge, a cam surface located proximate the ledge, and a toe ledge. The signal connector has a toe located on one side of the connector adapted to be positioned under the toe ledge, a spring ledge adapted to cooperate with the cam surface to bias the connector towards the toe ledge, and a snap-lock latch adapted to keep the signal connector retained with the track. The connector can include a key to prevent connection of the signal connector to the track unless the signal connector is located at a predetermined position relative to the track.
摘要:
The present invention is a two unit electronic control system to reduce power demands imposed upon direct current power sources. The present invention comprises a contact/resistor network, a trigger generator, a pulse generator, a waveform stabilization circuit, a driver circuit, a voltage regulation circuit, a noise suppression circuit, a transient suppression circuit, a field effect transistor network and primary and secondary on/off control circuits. The input can be resistance, voltage, current or capacitance which is varied in response to an external stimulus. The chosen input is conditioned and applied to vary the duty cycle of a repeating pulse signal. That pulse signal is conditioned and applied to a switching device which controls the current from the DC power source to the load. The number of switching devices comprising the network will vary from one to many dependent upon the current carrying demand of the load and the current handling capability of the switching device utilized.
摘要:
Apparatus for installing connectors onto flat conductor cables. An improved installation station including the apparatus includes magazines for supporting a plurality of connector portions and a transport station to sequentially move them includes magazines for supporting a plurality of connector portions and an transport station to sequentially move the connectors from the magazines to the installation station. The installation station includes surfaces for retaining cables in a horizontal plane and a press having an avil and ram for coupling connector portions to the cable and to each other. The surfaces are spring biased and include abuttment surfaces for proper positioning of the cables.
摘要:
A crimping tool of the type employed in crimping or compressing an article such as an electrical connector which has a substantially fixed jaw which has a surface against which an article is compressed, a ram having a surface for supporting a die and an article, the ram being mounted for movement toward and away from the jaw, and a die holder which is pivotally mounted to the ram to keep the compressing surface of the jaw and the supporting surface of the ram parallel throughout the movement of the ram in the event that the jaw deflects slightly during operation of the tool.