Abstract: Chip carrier comprising a square chip carrier body as slots extending inwardly from its side surfaces midway between its corners. These slots function as keyways for keys that are contained in the chip carrier socket. The keys are located midway between the corners of the chip carrier receiving recess and each key is in the row of contact terminals which are positioned in the socket body in surrounding relationship to the recess. By virtue of this system of positioning the chip carrier in the chip carrier socket, the effects of differential thermal expansion of the chip carrier relative to the chip carrier socket are minimized.
Abstract: A method of breaking an optical fiber comprises the steps of surrounding the fiber with elastomeric material in the region of the desired break location and then compressing the elastomeric material towards the axis of the fiber. When the material is compressed, it grips the fiber so that the fiber and the material cannot move relative to each other. Compression of the material also results in elongation of the material so that the fiber is placed in tension and fractures at the desired break point. An apparatus for carrying out the processes is also disclosed.
Abstract: Motor stator comprises a stator core having coil windings thereon which are connected to lead wires. A motor protector is connected to at least one of the windings and to one lead wire. The electrical connections between the lead wires, the windings and the protector are made by means of a stator connector mounted on the stator core and which has a pocket which receives the protector. Adjacent to the pocket, a cavity is provided which receives a terminal which connects one of the windings to a first terminal extending from the protector. The windings extend to terminals in the connector which have terminal tabs. The tabs are matable with receptacles in a complementary connector which can be coupled to the stator connector. The second protector terminal extends into the connector housing and is received in a terminal therein which also has a tab for mating with a receptacle in the complementary connector.
Abstract: The ends of shielded coaxial conductors are connected to each other by a housing assembly comprising two or more housing blocks. The housing blocks have mating faces which are opposed to, and against, each other. The conductors are prepared by stripping the insulation and the shielding from the end and stripping the insulation only from an adjacent portion of each conductor. The stripped ends are in overlapping relationship and are pressed against each other by compressed blocks of plastic material. The plastic compresing blocks are held against the conductors by compressing bars which in turn are urged against the compressing blocks by a compressed elastomeric material. The dielectric constant of the plastic compressing blocks and the spacing between the overlapping stripped ends of the conductors and the surfaces of the compressing bars are selected such that the impedance in the zone of the electrical connection is compatible with the impedance of the cables.
June 20, 1986
Date of Patent:
March 31, 1987
Dimitry G. Grabbe, Lahman D. Lambert, II
Abstract: The required electrical connections between the ends of the windings on an electrical motor, the switch terminals for the motor, and the motor protector are made by means of an electrical connector which comprises a housing having a plurality of cavities. Each of the cavities has a double-ended terminal therein to which the winding ends are connected. Each terminal also has a receptacle portion which receives a tab extending from either the motor protector or the switch. The connector, the motor protector, and the switch are clustered adjacent to each other with the protector against or adjacent to the coil windings of the motor. The shape of the connector housing, the protector, and the switch, and the location of the cavities in the connector and the terminals on the switch is such that when the parts are assembled to each other on the motor, all of the required electrical connections will be made correctly.
Abstract: Electrical device, such as a connector receptacle, which is intended for mounting on the same side of a circuit board as the conductors are on comprises a housing having one surface which is opposed to the surface of the circuit board. The conductors in the device extend along the one surface of the housing and beyond an adjacent face of the housing. The end portions of the conductors extend in a zig-zag manner to a contact portion. The zig-zag compliant portions are unrestrained and can adapt themselves to slight movement of the housing without damage to the solder connections between the conductors on the circuit board and the contact portions of the conductors.
Abstract: A LIF or ZIF connector having improved contact wiping is disclosed herein. Briefly stated, a connector having contacts therein is provided with the contacts moving into or out of engagement with traces disposed on a daughter board. At the time of, or immediately after engagement of the contacts of the connector with the traces on the daughter board, a wiping cam causes the daughter board to be moved with respect to the contacts thereby causing a wiping action between the traces and the contacts.
Abstract: Electrical terminal having a wire-receiving slot comprises a pair of plate-like members in parallel side-by-side relationship. The plate-like members have aligned free ends and the space between the plate-like members serves as the wire-receiving slot for a wire which is to be connected to the terminal. The width of the slot is substantially less than the thickness of the material of the plate-like members and the terminal can be produced in sizes which are suitable for extremely fine wires having diameters of 0.2 mm or less. A connector is described containing terminals in accordance with the invention.
Abstract: Stamped and formed electrical terminal has a conductor-receiving portion at one end and a mating or contact portion at the other end. A transition section is provided between the conductor-receiving portion and the contact portion, the transition section comprising flat plates which extend from the aligned parallel plates of the conductor-receiving portion and slope towards a medial plane which is parallel to and between the plates of the contact portion. The conductor-receiving portion comprises first and second pairs of contact arms which extend from the flat inclined plates of the transition section and which are joined at their ends by U-shaped sections which are in back-to-back relationship.
Abstract: Electrical connector assembly comprises an intermediate body portion having oppositely facing first and second major surfaces and cover members. One-piece stamped and formed electrical terminals are mounted in the body. Each terminal has a first end portion which extends from the first major surface and a second end portion which extends from the second major surface. The end portions have wire-receiving slots. Each end portion has an associated plate-like wire cutter in spaced parallel relationship thereto. The wire cutters are integral with the end portions of the terminal and the first end portion and first wire cutter are spaced apart by a distance which is less than the distance between the second end portion and the second wire cutter to permit stacking to make tap-type connections.
Abstract: Stamped and formed contact socket has a first circumferentially continuous ring at its pin receiving end and a second circumferentially continuous ring at its inner end. An intermediate portion of the socket comprises an even number plurality of pairs of beams which have their ends integral with the first and second rings. Inwardly formed spherical bosses are provided on the rings which engage a pin upon movement of the pin into the socket. The bosses are spaced along the axis of the socket and are encountered sequentially during movement of the pin into the socket.
Abstract: Electrical connector of the type comprising an insulating housing and contact terminals inserted into the cavities of the housing has a separate contact retainer which is assembled to the housing after the contacts have been inserted. The retainer is latched to the housing after insertion and has retaining fingers each of which engages a contact terminal and prevents its removal from the housing.
Abstract: Apparatus for manufacturing ribbon cable having a plurality of filamentous elements comprises a wheel having a circumferential surface interrupted by a plurality of parallel grooves in which the elements are seated over a common arc. Elements are supplied tangentially toward the wheel as the wheel is rotated and plastic is extruded at a point on the common arc to form a ribbon cable with elements exposed where they lay in the grooves. Elements are entrapped in cable by plastic bridges formed in lateral channels or recesses which interrupt the grooves and permit plastic to flow around elements, by fiber mat which the plastic impregnates, by melt-bonding to plastic insulated wire, by adhesive, or by nearly complete entrapment of elements resulting from a shallow groove profile. An additional layer of plastic may be extruded onto the cable so produced to yield a conventional fully insulated ribbon cable, or for some cable profiles the cable may be mated to like cable for a close centerline spacing of elements.
Abstract: Receptacle terminal has substantially flat web portion and has contact springs which extend in one direction from the side edge portion of the web. The contact springs extend inwardly over the web and have end portions which are spaced from the web and which engage an inserted tab. A first pair of positioning ears are provided at the mating end of the terminal and extend inwardly of the web and towards each other. A second pair of positioning ears are formed from the contact springs and extend towards each other. The positioning ears locate a tab centrally on the web. A locking lance is struck from the web and serves to lock an inserted tab to the receptacle.
Abstract: Apparatus for inserting a wire into a wire-receiving slot of a terminal and simultaneously crimping a U-shaped strain relief portion of the terminal onto the wire comprises a ram made up of a tool holder portion and a force transmitting portion. A crimping die and an inserter are mounted on the tool holder portion to crimp and insert during the stroke of the ram. A spring is mounted between the force transmitting portion and the tool holder portion and is preloaded to the extent that it will be compressed when a force F is exceeded, this force being the force required to crimp the strain relief portion of the terminal onto the wire. An actuator is provided which applies the required force to the force transmitting portion of the ram. The apparatus can be used to crimp and insert wires within a range of diameters.
Abstract: Electrical terminal comprises first and second plate members joined by an integral bight. A wire-receiving slot extends into one of the plate members and an enlarged clearance opening is provided in the other plate member. The terminal is adapted to be inserted into a cavity in a housing having wire-admitting slots which permit placement of a wire in the slots with the wire extending through the cavity. A rib is provided in the cavity which is received in the clearance opening in the other plate member, the rib having a wire supporting surface at its upper end. The terminal is produced from dual thickness material with the first plate member and a major portion of the second plate member being of material of reduced thickness. Parts of the one plate member are a relatively thick stock metal and the free end of the other plate member is against the relatively thick stock metal. The wire-receiving slot is a sheared slit and the terminal is intended to make connections to relatively fine wires.
Abstract: Stamped and formed electrical terminal has a conductor-receiving portion comprising parallel plate-like members having aligned conductor-receiving slots. The terminal has a transition portion intermediate the ends thereof and has a contact portion extending from the transition portion. The transition portion comprises first and second sections which extend from the plate-like members. Each section has an arcuate cross section part adjacent to the plate-like member which fairs into a part having a U-shaped cross section. The contact portion comprises one or more arms that extend from at least one of the U-shaped parts. In one embodiment, each U-shaped part has two contact arms extending therefrom which are resiliently biased against each other to provide contact force on a complementary terminal when the two terminals are coupled.
April 18, 1983
Date of Patent:
July 9, 1985
Donald W. K. Hughes, Donald L. Metzger, Charles E. Reynolds
Abstract: Pin receptacle intended for mounting in a circuit board comprises a hollow metallic cylindrical member having first and second ends. A contact lance is struck or sheared from the cylindrical member and has a fixed end that is adjacent to the second end of the cylindrical member. The contact lance extends inwardly from its fixed end to the interior of the receptacle and has a pin contacting portion intermediate its ends. An end portion of the lance is reversely curved and extends through the opening formed by the shearing operation to the exterior of the cylindrical member. A circuit board conductor contacting portion is on the end of the lance. Stop lances are also struck from the cylindrical member adjacent to the second end and extend obliquely from its surface. Anti-overstress lances are also struck from the cylindrical member and extend obliquely towards the second end of the cylindrical member.
Abstract: Machine for performing operations on strip material comprises a plurality of modules on a supporting bed. Each module has a strip feeder, a tooling assembly, and an actuating assembly. Strip is fed through the modules by the feeder and in each module the tooling assembly performs an operation such as stamping, forming, marking, etc. The modules feed the strip in a vertical plane and the modules are symmetrical with respect to the vertical plane of the strip. Preferably the actuating assembly and the tooling assembly is dynamically balanced. Advantages achieved include high speeds, reduced power requirements, reduced noise, and reduced tooling cost.
February 7, 1983
Date of Patent:
February 5, 1985
Johannes C. W. Bakermans, Dimitry G. Grabbe
Abstract: Circuit board housing comprises spaced-apart panels with the circuit board being between the panels. A modular jack is mounted on one surface of the circuit board and the panels have laterally extending flanges which form a wall of the circuit board housing. One of the flanges is provided with an opening which is in alignment with the opening in the modular jack. The modular jack has a clearance notch extending into one of its sidewalls and the circuit board has a similar notch in registry with the clearance notch, these notches providing clearance for an inserted modular plug. The latching shoulder for the modular jack is provided on one of the flanges rather than in the jack housing. These features, the latching shoulder on the flange and the clearance notches, permit a reduction in the thickness of the circuit board housing as measured between the panels.