Abstract: This is an apparatus for measuring the intensity of a seismic shock applied to the apparatus. The apparatus includes an enclosure in which is a system of weights movable in response to an applied mechanical shock, and connected to a movable transmission member. The transmission member contacts a first spiral cam rotatably mounted on a balanced rockable lever. The cam turns the lever angularly when the transmission member is moved by the weights. A spring connected to the lever tends to inhibit it from turning out of its balanced position when the transmission member moves. A second spiral cam is also rotatably mounted on the lever. A fixed stop member contacts the second cam to prevent the lever from turning back to its original balanced position when the lever is turned out of this position in response to an applied mechanical shock. An index needle connected to the lever indicates on a scale the amount that the lever has turned.

Abstract: This miniature acceleration switch has a cylindrical metal mass movable axially in a cylindrical chamber in a cylindrical metal shell. The chamber is filled with an inert gas to inhibit corrosion. The mass has a frustoconical end section inserted into a metal coil spring engaged at one end on an annular shoulder at the wider end of the section, and engaged at its other end in an annular recess formed in a metal ring of a header closing and welded to the other end of the chamber to seal it hermetically. The header has a glass insulator bonded to the ring and carries at its center a circuit lead projecting into the chamber to be contacted by the mass when it moves against a spring load in response to a predetermined force of acceleration.

Abstract: This adapter has a housing containing an automatic electrical switching circuit, a plug for connecting the circuit to an external A.C. power source, and sockets for mounting primary and standby lamps on the housing in circuit with the switching circuit. The circuit includes a conventional rectifier bridge and a transistor which is normally biased off so that the standby lamp is off, when the primary lamp lights. When the primary lamp goes off (burns out), the transistor conducts and the standby lamp is automatically turned on. When the primary lamp again operates the transistor is again biased off and the standby lamp is automatically turned off. A signal lamp in the switch circuit lights when the standby lamp is on. Motors or other power consuming devices may be substituted for the lamps.

Abstract: A mixing syringe having an inner cylindrical barrel open at one end, and closed at its other end by a thin, tough, membrane bonded thereto. The barrel may contain a first liquid. A plunger inserted in the barrel has a sliding, sealing head which applies pressure to the liquid to rupture the membrane when the plunger is advanced. The barrel is slidably inserted in an open end of an outer barrel in sealing relationship therewith, and has a tip on the other end of the outer barrel. The outer barrel contains a liquid or other material to mix with the first liquid when the membrane is ruptured. The mixture is discharged from the outer barrel via the tip when the inner barrel is advanced axially in the outer barrel.

Abstract: A dispenser for liquids and viscous fluids has a syringe-like device with a barrel for containing fluid and a nozzle at one end. The plunger is movable axially in the barrel for discharging the fluid. At the inner end of the plunger is a flexible, elastic cap which has an end wall that is normally concave, but which is flattened out under pressure when the fluid is discharged. When pressure on the cap is removed, the cap reassumes its concave shape thereby creating a suction in the barrel which draws fluid back into the nozzle to prevent dripping.

Abstract: A device for cyclically enhancing driving torque in a mechanical assembly having a torque driven rotatable body, including a nonrotatable support carrying the body a drive means applying driving torque to the rotatable body fixed magnetic members, and a rotatable magnetic means arranged to react intermittently to enhance cyclically the driving torque applied to the driven body. The torque driven body exerts a flywheel driving effect on the magnetic members to rotate them between angular positions when the magnetic members are not enhancing the driving torque.

Abstract: A miniature side mounting high frequency blocking capacitor has a rectangular dielectric block in which are generally flat, L-shaped electrodes disposed alternately in opposite longitudinal, parallel orientation. The electrodes have lateral tabs whose edges are flush with one side of the block. A conductive layer covers this one side and is divided by a groove extending across the block to define two sections which are the electrical terminals of the capacitor. The capacitor may be mounted laterally to a circuit board by soldering the two conductive terminal sections thereto.

Abstract: A heat sink housing for electronic components comprises a metal tube having four walls formed with internal and external ridges and grooves. The inside ridges and grooves removably support circuit boards and separate circuit members. The external ridges maximize radiation of heat from inside the tube. Two cover plates are removably attached to open ends of the tube to form a closed compartment in the tube.

Abstract: A torque limiting clutch having two or more cylindrical magnetic rings with coplanar edges abutted to a flat surface portion at one side of a magnetic driven member which may be a flat plate. The rings may be cylindrically round, or polygonal with flat sides. Between the rings are ring-like, cylindrical, arcuate, or flat permanent magnets conforming to the radial spacing of the rings and maintaining a magnetic circuit or circuits with the driven plate. A flat bar or other mechanical drive means engages the free other edges of the rings and is driven rotationally by a motor drive shaft or other driving means. The driven plate carries a driven shaft, or is adapted for engaging driven gear means or a driven pulley belt.

Abstract: In this optical image projection system, a composite image is produced by the superimposition of images from a plurality of separate optical projectors. Each optical projector includes a lamp, a transparency, colored light filters and a projection lens. One projector projects an image directly onto the screen. The other optical projectors include mirrors adjustable to superimpose their images with the directly projected image to form a composite image. The intensity of the lamps may be modulated by a color organ driven by an audio signal source to produce color images which change in intensity and hue reflecting the spectral content of the audio source. The composite image may also be changed with time by using liquid crystal display matrixes modulated by applied video signals.

Abstract: A sail for a wind driven craft includes a panel having a multiplicity of pockets disposed in contiguous rows, and staggered with respect to pockets in adjacent rows, and aligned with pockets in alternate rows, to define a honeycomb array. Open ends of the pockets may be polygonal and have curved inner walls with closed ends. External sides of the pockets are convex. Each pocket has an infinite number of diametral planes dividing the pocket into two spaces of equal volume. The panel may have a peripheral flange overlapping peripheral pockets.

Abstract: A coil assembly has flat spiral conductive coils on an insulative slab. The coils are respectively covered by alternate insulative layers having open areas exposing inner ends of the coils to which conductive jumpers are connected. Outer ends of the coils are connected to other conductive pads on the slab. The coils are connected in series via the jumpers.

Abstract: A bracket structure for supporting a horizontal or vertical sheet-like member and adapted for attachment to a supporting apertured panel having a first U-shaped clip with two opposing spaced flat side walls joined by an integral end wall. A stem extends outwardly of the end wall which has a cylindrical slotted neck to define flexible spaced bifurcations. When the bifurcations are pressed together they define a round head which may enter an aperture in the supporting panel.