Abstract: A cleaning head for an air flow type cleaner defines an open-faced chamber for facing the surface to be cleaned. An air recirculating conduit draws air from the chamber through a first port in the chamber adjacent one end thereof. A baffle in the cleaning head is positioned substantially between the one end and the first port to reduce the flow of dirt-laden air to the one end. By this invention, one or more apertures provide communication at a central portion of the baffle substantially between the first port and that volume within the chamber which extends between the baffle and the one end, to provide air suction to prevent dirt accumulation in that volume.

Abstract: A mold comprises a molding chamber, a sprue aperture communicating with the chamber for introducing molding compound into the chamber, and a mold gate for regulating molding compound flow through the sprue aperture. In accordance with this invention, the mold gate comprises flexible flap means positioned to restrict flow of molding compound through the sprue aperture. The flap means is positioned to be flexed toward the molding chamber by pressurized molding compound, to permit increased flow of the molding compound through the sprue aperture into the molding chamber. The flap means is capable of returning to their original shape when the pressurized molding compound is substantially released of its pressure, particularly in the circumstance where a suction step in the molding compound pressure cycle provides a negative pressure. The flap means in its original shape at least substantially obstructs the sprue aperture.

Abstract: Described herein is a flat lapping machine capable of precision-abrading simultaneously flat surfaces on the front and rear sides of a work in the fashion of lapping, polishing and grinding machines. The present invention contemplates to provide a flat lapping machine which is simplified in construction as compared with conventional flap lapping machines having a large number of carriers in planetary motions, and which can stop the respective carriers easily in specific positions and directions at the end of a lapping operation. To this end, the present invention employs a large number of support gear mechanisms each constituted by a plural number of small gears and located at uniform intervals around a center gear, rotatably supporting the respective carriers in predetermined positions while the respective carriers are driven by the center gear.

Abstract: A vehicle has first and second drivers' seats and a control console, the control console carrying a plurality of individual controls and display means. The drivers' seats are in side-by-side relation. By this invention, a pivot carries the control console to permit the console to pivot between at least a first position facing the first driver's seat and a second position facing the second driver's seat. Thus, two drivers may operate the vehicle from the same control console in alternating manner. Typically a, releasable lock provides retention of the control console in either of the two positions described above, and also in an intermediate rotating position in which the control console faces between the two seats. Also, cable may communicate with the control console, the cable extending through the pivot for communication with the rest of the vehicle.

Abstract: A grid parabolic antenna formed of a peripheral hoop and a plurality of metallic reflector ribs arranged in planes substantially parallel to each other and connected to the hoop. The reflector ribs each have an elongated cross-sectional configuration, with the elongation being in a direction that is generally parallel to the axis of the antenna feed which is at the focus of the parabola.

Abstract: An electrical interconnector comprises an outer housing defining a first aperture; a rotor member occupying the first aperture in rotational relation to it; the first electrical connection carried on the outer housing; a second electrical connection carried on rotor member; and a coiled conducter wire loosely coiled in a plurality of coils about the rotor member with the outer housing, the coil conducter wire being connected at respective ends thereof to the first and second electrical connections. In this invention, one or more recesses are carried on either the outer housing or rotor member. One or more flexible detents are carried by the other of the outer housing and rotor, the detents being normally positioned to project into the recesses to prevent rotation between the outer housing and rotor member.

Abstract: A fiber optic contact comprises a fiber optic cable having a first free end, and a sleeve member surrounding the first free end and proportioned to support the first free end in abutting relation with a second free end of another fiber optic cable for optical transmission between them. In accordance with this invention, a collet is slidably mounted on the sleeve member. Compression spring means are carried on the sleeve member between the collet and the first free end, so that the contact may be retained in the desired abutting relation by retention means that engages the collet in a position to bias the first free end against the second free end through the spring means.

Abstract: A solder button may be attached to an elongated conductor by substantially surrounding a portion of the conductor with a mass of solder. The mass of solder may be crimped or heat welded into fixed position onto the elongated conductor, which is typically in ribbon form, with the solder being cut from a strip of solder by cutting and crimping means, the strip of solder being in transverse relation to the conductor at the crimping means. The elongated conductor, with attached solder buttons, may be attached by automated means in a single step to a pane of glass or the like.

Abstract: An antenna system for mounting on a glass plate with a radiator extending from one side of the glass plate and with an electrical connector and a cable extending from the opposite side of the glass plate whereby energy is transferred through the glass plate. Coupling means for a cable is provided, defining a receptacle for retaining the coupled end of the coaxial cable at an angle of essentially 15 to 60 degrees to said glass plate in said mounted position. Also, the antenna may define a helical base portion which may be attached to the glass plate on the side opposite to the coupling means. The helical base serves to shorten the antenna, and also to simultaneously serve as an electrical phase cancelling coil. Additionally, improvements are disclosed in the design of field cancelling conductors used.

Abstract: An electrical contact having a compliant section for mounting the contact on a circuit board in a plated-through hole. The compliant section includes a section having a configuration which deforms upon insertion into the circuit board hole and creates positive electrical contact at three points. The contact may include a wire wrap tail and an upper pin or post to mate with a connector.

Abstract: A method of making an electrical contact intended to be inserted into a plated-through hole in a printed circuit board including a compliant section which engages the inside of the hole in an interference fit thereby gripping the sides of the hole to retain the pin therein providing excellent electrical integrity without need for soldering.

Abstract: A mold, typically an injection mold, having a mold core and a mold cavity has centering rib means at its parting line defined on one of the core and cavity, projecting in the closed position into a groove defined by the other of the mold core and cavity in the closed position. By this invention a wear member is removably secured in the groove at a position which is radially inward of the centering rib. The wear member defines a radially outer face that is acutely angled outwardly from the longitudinal axis of the mold relative to the centering rib. The radially inner surface of the centering rib defines a plane parallel to the radially outer face and positioned whereby the radially outer face and radially inner surface abut each other in the closed position.

Abstract: A dust trap for flowing gases comprises an inlet conduit which terminates in a transverse wall for impact-type dust separation (i.e. inertial separation). A side entry port is positioned adjacent the transverse wall. The side entry port communicates with the circulation chamber defining an angled opposed wall in the opposite side of the chamber of the side entry port. The angled, opposed wall is substantially perpendicular to gas flow through the side entry port, to cause flowing gas from the side entry port to split vertically into swirling upward and downward flow patterns for further dust separation. The lower part of the circulation chamber is normally closed off from the exterior. The upper part of the circulation chamber communicates with an outlet conduit.

Abstract: A vehicle having a steering system controlled by either of a pair of steering wheels also includes first and second steering wheel shafts means, each carrying one of the steering wheels. A wheel steering mechanism is mechanically connected to the first and second steering wheel shafts means. In accordance with this invention, a third shaft is attached at one end to the first steering wheel shafts means. The third shaft means is connected at its other end without intermediate, intervening gears to a gear for rotationally interconnecting the third shaft, the second steering wheel shaft, and the wheel steering mechanism. This structure can eliminate an expensive 90 degree gear box when compared with prior art designs, for significant cost savings while providing equivalent or superior function.

Abstract: A mold, typically an injection mold, comprises a cavity member and a core member relatively movable between open and closed positions to define a first parting line and a molding chamber between the core and cavity members in the closed position. A sprue aperture is provided, communicating with the molding chamber to provide molding compound to the chamber. In accordance with this invention the cavity member defines forward and rearward portions movable between open and closed positions and proportioned whereby objects molded in the molding chamber can be removed from between the forward and rear portions when the cavity member is in its open position.

Abstract: A mold comprises a pair of openable and closeable mold halves separable along a parting line. By this invention, each mold half defines a recessed outer surface portion which communicates with the recessed portion of the other mold half in the closed position. Each mold half defines a bridge portion which extends over its recessed portion and is positioned adjacent to the parting line. Thus, a lifting hook may pass into the recess defined by the outer surface portion to engage the bridge portion of a separate mold half, or to engage both bridge portions of both mold halves in the closed position.

Abstract: A plastic lid for a container comprises a lid body and an annular, peripheral gripping flange for retaining the lid on the container. In accordance with this invention, the flange defines at least a pair of spaced, circumferential sections, each section having opposed ends which each define a break-away flange portion. Each spaced section defines means permitting outward folding of the section upon breaking away of the connected break-away flange portions to facilitate opening. Alternatively, the gripping flange may define a zigzag tear line for removal of spaced, enlarged portions of the gripping flange to facilitate opening, while permitting remaining portions of the gripping flange to provide some retention of the lid to its container.

Abstract: A mold, typically an injection mold, comprises a cavity member and a core member relatively movable between open and closed positions to define a first parting line and a molding chamber between the core and cavity members in the closed position. A sprue aperture is provided, communicating with the molding chamber to provide molding compound to the chamber. In accordance with this invention the cavity member defines forward and rearward portions movable between open and closed positions and proportioned whereby objects molded in the molding chamber can be removed from between the forward and rear portions when the cavity member is in its open position.

Abstract: A clock spring interconnector provides electrical connection between a rotating and nonrotating electrical circuit. In the interconnector, an outer housing defines a fist aperture extending therethrough. A rotor member occupies the first aperture in rotational relation to it. First conductor wire means are carried by the outer housing, while second conductor wire means are carried by the rotor member. Coiled conductor means are loosely coiled in a plurality of coils about the rotor member within the outer housing, with the coiled conductor means being connected at respective ends to the first and second conductor wires. The rotor member defines a second aperture extending through it in generally coaxial relation with the first aperture.

Abstract: A wire locator and strain relief device comprises a pair of plastic strip members. Locking means hold the strip members together, the strip members together defining a plurality of parallel, coplanar channels, each for receiving separate, insulated wires, to firmly hold such wires in a single-plane,precisely positioned configuration. Thus, ends of the wires may be precisely located relative to each other for installation into an electronic circuit member such as a circuit board.