Abstract: There is disclosed a method for producing an electrical circuit board comprising the steps of selectively treating a portion of a conductive metal sheet in a pattern substantially corresponding to a predetermined printed circuit configuration and in a manner which renders the pattern portion of the sheet essentially adherent to a resin, placing the treated pattern portion of the sheet in direct contact with a layer of resin on the surface of an insulating substrate to form an assembly, uniformly heating the assembly to an elevated temperature to selectively bond the substrate to the treated pattern portion of the sheet, cutting the sheet along the perimeter of the pattern portions and stripping the non-pattern portions of the sheet from the substrate to form a circuit board.

Abstract: A progressive stage forging machine is provided for forming an article in stages by means of a plurality of dies and cooperating punches, carried on a ram, wherein more than two forging blows are required to complete the forming of the article. The invention particularly provides a forging machine of the three-blow type having three punches and three cooperating dies, wherein two of the dies are carried on a member to permit alternating changes of position of those two dies, thereby eliminating a transfer mechanism between the two dies and achieving a one hundred percent increase over the production rate of presently available forging machines of the three-blow type.

Abstract: There is disclosed a purging system for removing foreign matter from a fluid conducting conduit in which a sensor detects the presence of the foreign matter and produces an electrical signal which activates a timer which, in turn, connects a pump to the conduit for a given time duration to purge the conduit of the foreign matter. A counter also maybe connected to periodically activate the timer and purge the conduit, whether or not the sensor has detected foreign matter.

Abstract: There is disclosed a heart rate indicator having electrodes for coupling to the electrical impulses corresponding to each beat of the heart of a living subject, which electrodes are connected to an electronic circuit for producing a burst of alternating electronic signal in response to each electrical impulse produced at each heart beat. The electronic circuit in turn is connected to a detector circuit for detecting the peak amplitude of each burst of alternating signal and to produce an electrical pulse related in time thereto, the detector circuit in turn being connected to a microcomputer which measures the time between pulses and selectively converts the measured times into a number representing heart beat rate, the microcomputer being in turn connected to a display for displaying the number representing heart beat rate.

Abstract: A dedicated microcomputer for games, sports and other recreational activities has a central processing unit, a keyboard input, random access and pre-programmed read only memories and a digital display, the read only memory being programmed with a chess tournament mode in which remaining time for each player and remaining moves for each player may be displayed, a chess blitz mode in which remaining grace time is displayed for each move by each player, a rapid transit mode in which remaining game time is displayed for each player, an events-up mode where a time count up from a pre-selected number is displayed and an events-down mode where a time count down from a pre-selected number is displayed. All leading zeros of the display are blanked to conserve power. A warning alarm may be activated at any point in any count. The two least significant digits may be blanked when not required to further conserve power.

Abstract: There is disclosed a spray head extension for a pressurized container comprising a rigid elongated member having a fluid passageway along the length thereof extending from one end to a location adjacent the other end thereof, the elongated member having at least one opening connected between the fluid passageway adjacent the other end and the exterior surface of the elongated member, the one end having a receptacle therein connected to the fluid passageway and adapted and constructed to receive and engage the valve stem of a pressurized container and to direct the pressurized contents of the container into the fluid conduit and out of the at least one passageway when the valve stem is displaced to open the valve, the elongated member displacing the valve stem by pressing the one end of the elongated member against the interior wall of a space into which the elongated member is inserted, allowing the pressurized contents of the container to flow through the rigid elongated member and out of the at least one pa

Abstract: There is disclosed a lattice structure having a plurality of elongated parallel elements interconnected periodically by integrally formed ribs therebetween and a plurality of elongated filaments, each of which is embedded in and adhered to one of the elongated parallel elements. The structure is constructed by a method which includes the steps of molding the lattice structure from film or laminate belts, heating the filaments above the melting temperature of the molded lattice structure, joining the heated elements with the structure and solidifying the lattice structure adjacent each filament.

Abstract: There is disclosed an adjustable fluid flow restrictor for controlling the rate of fluid flow into a conduit, the restrictor having a body which seals the central opening of a fluid chamber and through which body there is a central opening having a cylinder section and a truncated cone section the cylinder section having a set-screw engaged therein, the threads thereof forming spiral grooves through which fluid maybe conducted at a rate controlled by positioning the end of the set-screw adjacent the walls of the truncated cone section to obstruct and adjustably close the openings into the spiral grooves thereby restricting the rate of fluid flow. An alternate form of the restrictor employs a ball-valve between the set-screw and the truncated cone section, the space between the ball-valve and the walls of the truncated cone section being adjusted by the set-screw to restrict the flow of fluid.

Abstract: There is disclosed a hand held percussion toy comprising a pair of substantially parallel surfaces, each surface having a perimeter edge, the pair of substantially parallel surfaces being joined together by a third surface connected between the perimeter edges of the pair of parallel surfaces to form a sealed enclosure having an interior volume, the third surface having a recess therein extending into the interior volume, the recess being shaped to receive a thumb or a finger of a person for holding the percussion toy while maintaining the seal of the sealed enclosure whereby a drum-like structure is formed which produces a resonant tone when struck by another object.

Abstract: There is disclosed an air filtering mask having a cyclone filter member attached to a mask body, the cyclone filter member including a hollow slotted cylinder section attached to the base end of a hollow frusto-conical section and a hollow vortex finder having a substantially cylindrical body and two ends, one end being radially connected and sealed to the interior wall of the hollow cylinder section and the other end being located within the base end of the hollow frusto-conical section, the cylindrical body of the vortex finder extending coaxially through and being uniformly spaced from the interior wall of the hollow cylinder section, the hollow cylinder section having a multiplicity of slots through the walls thereof, the multiplicity of slots being aligned to penetrate into the region between the hollow vortex finder and the hollow slotted cylinder section tangential to the interior wall of the hollow cylinder section, the frusto-conical section having an opening in the apex end thereof.

Abstract: There is disclosed apparatus for converting liquid fuel into a highly combustible dry gaseous fuel for internal combustion engines comprising a fuel injector connected to a heated baffle chamber containing a multiplicity of baffles, heated to the exhaust temperature of an internal combustion engine. The heated baffle chamber in turn communicates with an unheated baffle chamber containing a plurality of unheated baffles, which in turn communicates with a distribution chamber with throttle valves and a venturi to controllably disperse the dry gaseous fuel mixed with air into the intake manifold of an internal combustion engine.

Abstract: There is disclosed a non-rebounding article having a thin walled container with a region of uniform thickness located adjacent the interior surface thereof adapted to receive a flexible material distributed therein, the container having an interior volume centrally located therein into which the flexible material is free to move upon impact of the container with an exterior object and a flexible material substantially located within the region of uniform thickness, the flexible material contacting the interior surface of the container and substantially being free to move away from an initial position adjacent the interior surface upon impact of the container with an exterior object whereby forces tending to cause the container to rebound from the impact with the exterior object are absorbed, the flexible material having a structural memory to substantially return it to the initial position adjacent the interior surface after the impact.

Abstract: There is disclosed a folding hand tool comprising a channel member having a head member rotatably attached to one end and a handle device rotatably attached to the other end with a block member attached to the channel member oppositely disposed the head member, the head member being locked in an operating position to the block member by a bolt member passing through the block member and having a hook on one end thereof which engages a receptacle in the head member and is secured therein by tightening a nut member threadably engaged on the other end of the bolt member to hold the head member in a fixed position with respect to the channel member. Alternatively, the head member is locked to the block member by a sliding pin located in a receptacle in the head member and biased to engage a hole in the block member when the head member is rotated into its operating position.

Abstract: There is disclosed a lattice structure having a plurality of elongated parallel elements interconnected periodically by integrally formed ribs therebetween and a plurality of elongated filaments, each of which is embedded in and adhered to one of the elongated parallel elements. The structure is constructed by a method which includes the steps of molding the lattice structure from film or laminate belts, heating the filaments above the melting temperature of the molded lattice structure, joining the heated elements with the structure and solidifying the lattice structure adjacent each filament.

Abstract: There is disclosed an improvement for a tilting, sliding edge dispenser having pivot members fixedly attached to opposite ends of the dispenser and a rigid support structure having elongated receptacles for receiving the pivot members in rotating sliding engagement. Each one of a pair of elongated driving loops is attached adjacent one end, respectively, of a linear edge of the dispenser and is stretched over a pair of wheels attached to each end of a base member and driven by a motor attached to a shaft connecting one wheel of each pair of wheels whereby the linear edge is driven across the surface of the base members to dispense the contents of the dispenser.

Abstract: There is disclosed a precision drive mechanism having a base member with a drive plate slidably connected thereto, the drive plate having an elongated slot engaged by a bearing member, which in turn is threadably coupled to a lead screw. A pivot frame having an elongated arm is pivotally connected to the base member and is slidably engaged by the bearing member, the pivot frame being adapted to be connected to a source of fixed reciprocating motion whereby the drive plate is moved by the pivot frame in variable reciprocating motion precisely adjusted by moving the bearing member along the elongated arm of the pivot frame through rotation of the lead screw.

Abstract: There is disclosed a fin structure for mounting in an opening in the hull of a power boat having an elongated rectangular panel connected between the base edges of a pair of elongated fins, each fin having a base edge, a leading edge and a trailing edge, being joined to the elongated rectangular panel to locate the pair of fins in substantially parallel alignment and to form a channel adapted to receive a propeller and propeller shaft therein with the propeller in proximity of the trailing edges, the trailing edge of each fin projecting from one end of the base edge beyond the outer most extremeties of the propeller received in the channel, the leading edge extending from the end of the trailing edge and sloping forward along the hull to the other end of the base edge in a manner to be more distant from the rectangular panel at any point than the propeller shaft received in the channel such that the propeller and propeller shaft are entirely contained within the channel formed between the pair of fins to prot

Abstract: There is disclosed an impact device for operation from a source of alternating power and with at least striking member adapted to be electromagnetically actuated to impact against an opposing surface. An electrical gate under the control of a switching circuit and at a given point in time and for a given time duration connects a source of alternating power to the electromagnetic striking member. A source of gate control pulses for rendering the electrical gate conductive and non-conductive is connected through the switching circuit under the direction of a switch control circuit to the electrical gate for selecting which of the gate control pulses are to be connected to the electrical gate.

Abstract: There is disclosed an electrically activated infrared source assembly having a frame member with a pair of substantially parallel sides adapted to receive strands of an elongated wire stretched repeatedly therebetween in a serpentine configuration, each side having a curved surface thereon adapted to receive tangentially thereto and to support thereover end portions of the wire strands stretched from the other side, the curved surface having a multiplicity of grooves therealong adapted to accept the end portions of the wire strands at the point of tangential contact for maintaining the stretched wire strands between the sides in a spaced relationship one to another, each of the curved surfaces having a plurality of projections therealong adapted to engage therearound the end portions of the wire strands.