Abstract: An annunciator panel for aircraft has a plurality of pockets defining individual illuminated indicator devices. A lens assembly comprising a plastic lens and glass filters bonded together is encompassed by an elastically stretched rubber sleeve having an integral flange compressed between the lens body and panel housing, providing a light, fluid and particulate seal between lens and housing as well as a vibration and shock buffer to the lens and filters. The resiliency of the rubber sleeve accommodates different thermal expansion between dissimilar materials without imparting damage stresses to the lens assembly.

Abstract: A rubber ring disposed snugly over the glass envelope of a lamp and slid against a larger cylindrical lamp body centers and spaces the lamp within a reflector hole by positioning the ring within a counterbore recess in a back surface of the reflector concentric with the hole. The height of the ring is greater than the depth of the counterbore recess to space the lamp body away from the back surface of the reflector. A rubber strip is disposed between the opposite end of the lamp body and a housing member, the strip and ring being compressed in assembly to resiliently support the lamp, absorbing vibration and shock forces imparted to the lamp through the housing.

Abstract: A planar surface game board is divided into orthogonal quadrants and subdivided diagonally. The quadrants are hinged together along contiguous edges at a first surface and the diagonal subdivision is hinged together at a second surface, permitting the board to be folded or collapsed inwardly of the first surface wherein diagonally divided segments collapse adjacent each other between square quadrant segments to form a folded board one-fourth its original surface size and four times its thickness. The hinges may be formed by scoring the respective surfaces without completely severing the board, leaving thin webs of material as hinges.

Abstract: A linear acting ball latch is released by a rotary latch release member in the form of a rotor for a high torque, short stroke rotary electric motor which is electrically energized through a capacitor discharge system to release the latched member for spring biased movement into engagement with a bridging contact, thereby forcing the contact open from stationary contacts. A clapper type armature drives the contacts between open and closed positions through tubes, one of which extends through the latch mechanism. The tubes have spring biased plungers connected with the movable contact member to provide a low gradient spring force to the contacts permitting separation by the latch tube assembly and providing contact pressure when the magnetic operator closes the contacts. A manually operable handle and reset cam are disposed over the rotary latch mechanism and have mechanical connection with the latch release rotor to provide for manual operation of the release and for manual resetting of the latch mechanism.

Abstract: A printed circuit is formed by conventional methods over an adhesive coating applied to a flexible high temperature withstandability disposable backing to form a flexible laminate which is positioned in a cavity of an injection mold to conform to surface variations. The printed circuit conductors are surrounded on three sides by molten plastic material injected into the mold cavity to embed the conductors in the respective surfaces of the molded plastic article, which surfaces are non-coplanar and adjoining and the conductors are continuous from one surface to the other. The bond strength of the adhesive is preferably high with regard to the backing and low with regard to the printed circuit conductors to permit adhesive and backing to be peeled away after molding, thereby providing a three diemensional printed circuit in, for example, a recessed area of a molded plastic housing part of electrical apparatus.

Abstract: Rejection of a twin circuit breaker at panelboard mounting positions not designated to receive a twin breaker is achieved by extending the hook of the twin breaker outwardly beyond the panelboard rail to prevent anchoring the outboard end of the twin breaker at non-designated positions, thereby indicating obviously improper installation. The rail is provided with outward extensions at designated mounting positions which do engage with the twin breaker hook to anchor the outboard end, such extension in a preferred embodiment being part of an adapter attached to the panelboard.

Abstract: A U-shaped or O-shaped metal strap (20, 30-32, 34) is attached in a belt-like manner around the insulating housing (2, 2') of a DC speed control switch to provide an external heat sink for a FET (22, 36) attached to the heat sink. Bosses (2f, 2h, 2g) on the switch housing project into holes (20e, 20b-32b, 34h, 34g) in the heat sink to position the heat sink on the housing. Formed terminal conductors on the FET plug into press-in terminations on the switch. A pair of mirror image battery clips (16) are trapped against opposite sides of the switch housing by the heat sink and an interposed insulator (18), the clips having cooperatively aligned depending legs (16e) forming battery terminal clips, and formed prongs (16c) that plug into press-in wire terminations on the switch. Holes (16d) in body portions of the battery clips surround bosses (2e) on the sides of the switch housing to interlock the clips against lateral movement.

Abstract: An optoelectronic triangulation sensor mounted adjacent a path of travel of a material web or individual paper sheets has a pivotable lever biased toward a fixed reference platen to bias the article(s) against the platen. The sensor light source is focused on a target carried on the back of the lever and reflected to a position-sensitive detector (e.g. lateral-effect photo-diode), the output of which varies in an analog signal in direct proportion to displacement of the lever. A relatively wide included angle between light source and PSD receiver shortens the range of the sensor and eliminates a need for pulse modulated light. The current driving the light source is monitored to emit a signal when the light source current exceeds a threshold, signaling the need for maintenance on the sensor such as cleaning the lens.

Abstract: A modulating valve fluid regulator utilizing a two pole brushless DC motor having the rotor mounted for axial and rotary movement. A poppet is directly carried by the rotor and lifted from the valve seat by a flexible band system which winds upon a mandrel upon rotation of the rotor, or by a cam system having ball bearing cam followers operating on an arcuate cam surface for maximizing torque. Magnetic fields of rotor permanent magnets reacting with the stator core close valve when no electrical power is present to motor.

Abstract: A twin unit circuit breaker has a V-shaped stainless steel combination armature pivot and bias spring, a central offset portion on the armature to increase the armature surface area that is substantially uniformly spaced to pole faces of a pole piece, a thin profile connection of an operating spring with a latch lever, and a preformed U-shaped conductor attachable in circuit between a bimetal and a flexible conductor and insertable over a pole piece from one end thereof.

Abstract: A narrow width molded case circuit breaker having a current limiting contact arrangement has the line side terminal brought external near the middle of an end wall of the breaker case. A large mass connector bar is loosely affixed to the terminal by a screw passing through openings in each and engaging a threaded sleeve disposed within a counterbore in the connector bar. The sleeve also engages a threaded post on a supply conductor and is rotated by the screw to clamp the connector bar between the supply conductor and terminal, providing an external current path for heat dissipation and increased spacing from the current limiting contacts.

Abstract: A rotor, rotatably coupled to an output shaft, is slidable axially along the shaft, the rotor and its coupling being biased axially out of engagement with a stator into engagement with a hand wheel to effect rotational coupling of the hand wheel to the output shaft. Electrical energization of the motor attracts the rotor to the stator, axially sliding the rotor and its coupling against the bias to automatically uncouple the rotary connection with the hand wheel, and to effect a motor driven coupling with the output shaft.

Abstract: One end of an internal barrier assembly is attached to a forward side of a cabinet below a door of the cabinet by bolt and nut fasteners threadably assembled together at the exterior of the cabinet to be readily visible to an observer inspecting similar bolt and nut fasteners for the cabinet door, all such fasteners preferably being disposed on a common face of the cabinet. The bolt and nut fasteners have holes therein through which a wire loop of a lead security seal is wound and the integrity of all seals may be visibly observed without opening the door.

Abstract: Lateral ears of a terminal strap are bent sharply upward to form sidewalls spaced apart by the width of the strap, openings in the sidewalls overlapping arcuate edge portions of an annular flange of a threaded nut to loosely captivate the nut in position over a hole in the strap for cooperation with a threaded post projecting through the hole upon attachment of the breaker to a panelboard. Upper edges of the sidewall openings are abutted by the flange, and a frustoconical rear surface of the nut is engaged by the thread post upon installation to automatically align the nut and post.

Abstract: A modulating valve fluid regulator utilizing a two pole brushless DC motor having the rotor mounted for axial and rotary movement. A poppet is directly carried by the rotor and lifted from the valve seat by a flexible band system which winds upon a mandrel upon rotation of the rotor, or by a cam system having ball bearing cam followers operating on an arcuate cam surface for maximizing torque. Magnetic fields of rotor permanent magnets reacting with the stator core close valve when no electrical power is present to motor.

Abstract: A one piece member rests against a cam surface at a first end and against an adjustable pivot at a second end, biased thereagainst by an integral cantilever spring of said member, the distal end of which is interlocked in a deflected position to a hook formed in a housing. One end of a bimetal strip is riveted to the second end of the one piece member, the position of the other end of the bimetal strip being determined by manual adjustment of the pivot and the cam.

Abstract: A double pole, double throw rocking contactor switch is operable as a reversing switch by particularly configured stationary contacts at the corresponding ends of the respective poles. Stationary contacts are formed electrically common out of a single member having the stationary contact of one pole formed to be disposed below the rocking contactor and the stationary contact of the other pole formed to be disposed above its respective contactor. Accordingly, one contactor engages the upper surface of a stationary contact while the other end of the other contactor engages the under surface of the opposite stationary contact for a given stable position of the actuator, thereby causing the respective contactors to engage stationary contacts at respective opposite ends of the contactors, accomplishing the reversing function internally of the switch without special cross connect conductors, thereby permitting press-in wire terminations to be utilized.

Abstract: A drive lever of an auxiliary handle operator is pivotally mounted alongside a molded case circuit breaker to move in a plane parallel with a plane of movement of a constituent handle of the circuit breaker. A superstructure attached to the top of the circuit breaker carries a slide disposed over the constituent handle for linear reciprocal movement. The slide has a projection which is disposed in a hollow shaft of a roller bearing structure carried by the drive lever for limited translation perpendicular to slide movement with a limited amount of free play between the corresponding parts.

Abstract: A two-stage injection device has a resiliently expandable medication reservoir stored in collapsed state within the cannula. After inserting the cannula through the skin into an animal cavity, depression of a first stage element injects the reservoir out the cannula into the cavity. Depression of a second stage element fills the reservoir with fluid medication, elastically expanding the reservoir. The injection apparatus is withdrawn, leaving the reservoir implanted in the cavity, continuously infusing medication for a period up to hundreds of days through a restrictor orifice under the pressure of the elastically stretched walls of the reservoir.