Abstract: A precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially-extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.

Abstract: A low cost, high tolerance molded coil is disclosed together with a method of constructing the same. A wound coil is provided with connection leads. A mold having a mold cavity therein for the formation of an integral outer core and for supporting the coil is provided. The mold also produces integral securing portions for securing the coil to the outer core. The wound coil is placed in the mold cavity and a pre-molded and pre-shrunk plastic inner core is positioned inside of the coil substantially along the coil's longitudinal center line. A heated molding plastic is injected into the mold cavity so as to form the integral outer core for supporting the coil and securing portions of the coil. The molded coil is cooled and removed from the mold without withdrawing the inner core from the molded coil, which thereafter remains in the finished product. By use of the pre-molded and pre-shrunk plastic inner core, shrinkage and other deformations of the outer core is prevented.

Abstract: A high-precision injection-molded form for an inductance coil comprises a cylindrical core formed of a solid mass of plastic or similar material which has a surface of relatively low dimensional precision. A thin plastic layer molded over the surface of the core provides a high precision surface including helical grooves in which the windings of the coil are seated.

Abstract: A low cost, high tolerance molded coil is disclosed together with a method of constructing the same. A wound coil is provided with connection leads. A mold having a mold cavity therein for the formation of an integral outer core and for supporting the coil is provided. The mold also produces integral securing portions for securing the coil to the outer core. The wound coil is placed in the mold cavity and a pre-molded and pre-shrunk plastic inner core is positioned inside of the coil substantially along the coil's longitudinal center line. A heated molding plastic is injected into the mold cavity so as to form the integral outer core for supporting the coil and securing portions of the coil. The molded coil is cooled and removed from the mold without withdrawing the inner core from the molded coil, which thereafter remains in the finished product. By use of the pre-molded and pre-shrunk plastic inner core, shrinkage and other deformations of the outer core is prevented.

Abstract: A mobile antenna adapted to be mounted to a motor vehicle includes a vertical radiating element, an antenna base from which the radiating element extends, and a cylindrical mounting pin for mounting the base to a body panel of the vehicle. The mounting pin establishes at one end a first quick-release bayonet-type connection to the antenna base, and a second quick-release bayonet-type connection to a skirt member positioned between the base and the body panel. The base includes a socket for receiving the pin, and a contact member within the socket which engages tabs contained on a first electrically conductive end cap molded into the pin housing to mechanically and electrically connect the pin to the base. The other end of the pin includes a second electrically-conductive end cap which receives a coaxial cable and establishes an electrical connection between the shield of the cable and the inside surface of the body panel.

Abstract: A mounting adaptor for mounting a mobile antenna to an external frame member such as the support arm of a side view mirror or the frame of a carrier rack, or to the rain gutter of a motor vehicle roof, includes a housing from which an adjustable band clamp extends. When the adapter is mounted on an external frame member the band clamp is attached at its free end to the housing and drawn tight around the frame member. When the adapter is mounted on a rain gutter an integral mounting shoe projecting from the housing is seated under the gutter and the adaptor housing is drawn toward the gutter by the band clamp so as to secure the mounting shoe in position.

Abstract: An injection molded casing for an electronic time-keeping module includes integrally-molded wrist band and clasp portions adapted to fit over the wrist of a user. The watch casing and band are formed over a metal base strip which provides protection for the time-keeping module while maintaining sufficient pliability in the wrist band portions for a comfortable fit. The watch casing includes one or more control buttons in the form of deformable integrally-molded wall sections which may be pushed inwardly to control the operation of the time-keeping module within the casing without compromising the protection provided to the module by the housing against water and outside contaminants.

Abstract: A mobile antenna includes a radiating element which can be adjusted to an effective length to tune the antenna to a desired operating frequency without changing the physical length of the element. The radiating element is slidably received in a sleeve member positioned within a central bore having a tapered end of progressively decreasing diameter within the antenna base. The radiating element is locked in position by a deformable rim portion of increased diameter on the sleeve which is drawn into the tapered end of the bore and clamped around the radiating element by means of an axially-aligned bolt threaded into the opposite end of the sleeve. The bolt is preferably accessible only when the antenna is removed from its mounting base to discourage tampering with the antenna.

Abstract: An angularly adjustable antenna mounting assembly for mounting a mobile antenna to the exterior surface of a motor vehicle includes a semi-hemispherical mounting shell. The antenna base is secured to the exterior surface of the shell by a pin member which extends through the shell and is retained therein by a retaining plate biased against the interior surface of the shell. The antenna is connected to the other end of the pin member by a quick-release bayonet connection which also serves to establish electrical connection to the antenna. The mounting angle of the antenna is adjusted by adjusting the location of the bridging plate within the shell.

Abstract: A mobile antenna includes a radiating element and an inductance winding for tuning the radiating element for operation on a desired frequency. The inductance winding is supported within the base of the antenna by a core assembly and an overmold layer within which the turns of the winding are partially embedded. The winding is preferably formed with a relatively large diameter and of relatively heavy gauge wire, and the winding support core is preferably formed with a chamber concentric to the winding to improve the electrical efficiency of the winding, and hence the radiating efficiency of the antenna.

Abstract: A precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially-extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.

Abstract: A precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.

Abstract: Method of making a precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.

Abstract: A catheter needle assembly includes an injection-molded plastic body having a central hub portion through which a hollow core cannula extends, and from which a pair of wing-like tab portions extend in opposite directions to facilitate manipulating the assembly during use. Passageways extending through the roots of the tabs form crease lines to facilitate bending the tabs together for more convenient handling of the assembly.

Abstract: A high-precision pinion gear comprises a core formed of a plurality of stampings bonded together in axial alignment and having a plurality of relatively low precision teeth formed thereon. A thin plastic layer bonded to the circumference of the core provides a precision plastic surface on which the teeth of the pinion gear are formed with high precision.

Abstract: A head assembly for a portable fire extinguisher includes a plastic injection-molded body adapted to fit over the discharge opening of a pressurized cylinder of fire extinguishing agent. The body includes an internal passageway in which a valve is slidably mounted. An O-ring embedded in the wall of the passageway serves as a valve seat for the valve to provide control of the dispensing of the extinguishing agent. A tube segment, one end of which is flared and molded into the housing, and the other end of which extends through the discharge opening and is attached to the cylinder by a threaded sleeve, serves to mount the head assembly to the cylinder. In an alternate embodiment, the body of the head assembly includes a handle symmetrically disposed with respect to the center of gravity of the fire extinguisher for improved portability.

Abstract: A low profile faucet assembly of the type having hot and cold water valves and a spout includes an injection-molded body defining inlets for connection to hot and cold water pipes, an outlet for communication to the spout, and means for mounting the valves. Fluid communication is established within the body by means of an embedded central core member having a plurality of longitudinally extending passageways connected to the inlets and outlet by apertures axially aligned with the openings. The use of multiple passageways within the core reduces the knocking effects of low hoop strength, and the side-by-side arrangement of these passageways in a horizontal plane allows a low profile to be obtained. The use of threaded metal sleeves embedded in the inlets allows hot and cold water pipes to be connected directly to the faucet.

Abstract: A non-pressurized dispenser for fluid products includes a cylindrical plastic housing having a compressible body portion and a removable cap portion having a hollow core needle and dispensing nozzle. A disposable product container having flexible side walls is contained within the body portion. When the cap portion is seated on the body portion, the hollow core needle penetrates the container to establish fluid communication between the container and the nozzle. When the housing is compressed air trapped between the container and the housing causes the container to be compressed and the fluid product contained therein to be forced from the container through the core of the needle and out through the nozzle. A check valve in the housing allows air to enter the housing to replace the volume vacated by the dispensed fluid product so that the container can be completely emptied without the housing having to be completely compressed.