Abstract: Disclosed herein is a Ring Laser Gyroscope Mount comprising a low coefficient of expansion metal Invar sleeve and mount coupler. The sleeve may be secured to the gyroscope pedestal by being screwed and affixed to a relatively high coefficient of thermal expansion material pedestal, such as HyMu 80. The sleeve is attached also to the glass frame by cementing it at selected locations within the central mounting aperture of the gyroscope frame. This securement procedure makes the assembly stiffer in directions perpendicular to the axis of the coupler. At least one concentric groove which surrounds the coupler is machined into at least one side of the frame to reduce stress at gyroscope mirror surfaces during thermal excursions. The clearance gap where the cement is placed, the groove depth and shape, and the sleeve and coupler are designed to be stiff but not induce distortion.

Abstract: An arm exercise machine is shown having a housing with a pivot mechanism therein. Extending from the housing are first and second braces which extend in opposite directions with the pivot there between. A pivot rod is attached to the pivot mechanism and may be rotated about that mechanism by a user grasping the pivot rod. During such rotation, the first and second braces support the housing and counteract the user's rotation.

Abstract: A filament wound wheel is shown having a high percentage of continuous fiber oriented in the optimum load bearing direction for maximum strength. Also shown is a manufacturing method for the wheel including the steps of polar winding a continuous filament on a split mandrel to form a filament winding, slitting the filament winding on the mandrel to form two preforms, placing the two preforms in a back-to-back configuration, pressing each preform upon its split mandrel under heat to cure and join the preforms and separating the split mandrels from the joined preforms.

Abstract: An energy absorbing beam is shown which may be manufactured by wrapping several side-by-side strands of resin coated filaments about an increasing number of pins mounted upon a base. The base then becomes part of a mold to which heat and pressure is applied for forming the coated filaments into a beam having a variable cross section with variable thickness. Devices for fastening the beam may be molded into the beam by passing the coated filaments about the fasteners as the filaments are wrapped about the pins.

Abstract: A seal assembly releasing tool is shown having an outer support case and an inner unlocking element rotatably mounted on a shaft and coupled by a planetary gear train. The seal assembly is provided with cam surfaces into which cam followers latch for securely connecting the tool to the seal assembly and enabling the outer case to turn the assembly in one direction while the inner element turns the locking sleeve of the seal assembly in the other direction to release the seal assembly.

Abstract: An improved brush block assembly is shown for use within an electric motor wherein each terminal associated with the brush block functions as a terminal and, in addition, as a locating device for the brush block, a current path between the brush and terminal, and a latch for securing the brush block in the motor. The brush block assembly includes a cartridge subassembly having a latch receiving notch and a latching terminal subassembly for engaging the notch. The latching terminal subassembly incorporates the motor terminal in an insulated bushing. The arrangement allows the motor to be mechanically tested before the cartridge subassembly is snapped into the motor for final electrical checkout.

Abstract: A scanning system is disclosed for translucent or X-ray or unexposed film which circumvents the need for a wide angle, large entrance pupil lens as used in the conventional oscillating mirror scanning system. The scanning system is divided into two distinct and separate systems including a scanning optical system having an oscillating mirror which includes in its assembly a single element meniscus lens serving as an objective or first lens in the system. Coupled to the oscillating mirror assembly is a slotted aperture plate located at the image focal point which establishes the "X" dimension of the scanned element area upon the film. The aperture plate is moved in parallel along the scanning optical axis to follow the focal point as the distance from the objective lens to the scanned element area varies during the sweep of a scanned line. An illuminating optical system establishes the "Y" dimension of the scanned element area in the scanned line upon the film.

Abstract: A tool is shown into which two rows of aligned contacts may be inserted. The contacts are connected at one end to a selvedge strip that may be cut to a given length to include a predetermined number of contacts. An insulator housing mounts upon the tool and around the contacts to form a preassembled connector. The housing also functions as a support and guide for the contacts as they are inserted into apertures in a printed circuit board.

Abstract: An electrical connector for mounting a daughter board is shown having two rows of aligned contacts which may be preassembled in an insulator housing upon a special tool prior to insertion into aligned apertures in a mother board. The contacts are each provided with outwardly facing shouldered tabs which engage shouldered tabs on the inner surface of the bottom side walls of the housing. The lower portions of the housing side walls are flexible to permit the disengagement of the shoulders and removal of the housing. The side walls are joined by webs which create contact-receiving modules therebetween. Each module is free of obstructions above the upper surface of the shouldered contact tab to permit removal and replacement of the contact without removing the housing.

Abstract: An optical encoder design is disclosed which maintains a constant fixed air gap between the commutator and light sensors. The encoder head is mounted on a partially compressed hollow bellows or other spring member biasing snubber posts adjacent to the light sensors against tracks on the commutator. The height of the snubber posts above the light sensors defines the air gap.

Abstract: An improved electrical contact is shown, having a box-like section capable of mating with a square post or round pin at one end and an open barrel section for crimping upon an insulated, stripped wire at the other end. The box-like section and open barrel section are joined by a central box section which includes a retention leaf spring and an internal stop for controlling the seating of the contact upon the square post or round pin, for providing a stop for the wire, and for strengthening the box sections as the contact is crimped upon the wire.

Abstract: A shock and vibration sensitive switch is shown constructed from a toroidally shaped disc having a conductive outer periphery supported by sharp, film-penetrating contacts mounted in an insulated housing. The switch may be used in a security system which is energized by the shock and vibration accompanying an unauthorized entry to trigger an alarm. The insulated housing is wafer-shaped and mounts C-shaped contacts that permit the sensor to be unobtrusively mounted in either direction, which contributes to the security of the system.

Abstract: A method and apparatus for the concentration and recovery of platinum family metals from ceramic materials is disclosed, wherein the metal desired is first transported from the ceramic material through the utilization of a temperature gradient in a specially adapted furnace utilizing the volatile characteristics of the oxide of the metal desired. The volatile oxide is deposited upon a nucleation surface where it is reduced by means of hydrogen as the furnace cools to recover the metal.

Abstract: A solderless electrical contact is shown having first and second ends for connection to conductive elements joined by a central section having a C-shaped cross section with opposing arms tapering to a reduced end thickness for press-fit mounting into a printed circuit board aperture. The tapering arms of the C-shaped cross section provide uniformly stressed beams that allow the radii of each arm to better conform to tolerance variations of the aperture without creating undue stresses therein.

Abstract: An electrical connector system is shown in which a sheet metal contact with an open barrel wire receiving portion is attached to a wire conductor by spirally crimping the open barrel closed upon the wire. The spiral crimp is formed from multiple opposed indents, each arranged at an angle to the longitudinal axis of the contact and each decreasing in depth to smoothly merge with the diameter of the open barrel portion to prevent stress build-up. Shoulders are provided on each side of the crimped surface of the open barrel to strengthen the contact and prevent distortion.

Abstract: A scanning system is disclosed for translucent or X-ray film which circumvents the need for a wide angle, large entrance pupil lens as used in the conventional oscillating mirror scanning system. The scanning system is divided into two distinct and separate systems including a scanning optical system having an oscillating mirror which includes in its assembly a single element meniscus lens serving as an objective or first lens in the system. Coupled to the oscillating mirror assembly is a slotted aperture plate located at the image focal point which establishes the "X" dimension of the scanned element area upon the film. The aperture plate is moved in parallel along the scanning optical axis to follow the focal point as the distance from the objective lens to the scanned element area varies during the sweep of a scanned line.

Abstract: An electrical connector is shown having a pin protector molded into its connector housing. The protector has a plurality of elongated, stamped apertures along one edge formed with offset perimeters which extend into the molded housing for increasing the contact surface between the housing and pin protector molded therein.

Abstract: An improved electrical crimp removable socket contact is shown, having a box-like section capable of mating with a square wrap post or round pin at one end and an open barrel section for crimping a wire and its insulation at the other end. The box-like section and open barrel section are joined by a central box section which includes a retention leaf spring and an internal stop for controlling the seating of the socket contact upon the square wrap post or round pin while, at the same time, providing a stop for the wire and strengthening the box sections when the contact is crimped onto the wire.

Abstract: An integral servomechanism is shown that mounts a synchro receiver in the form of a control transformer, a torque motor, an isolation transformer and associated electronic circuitry integrally within a housing wherein the transformer permits the utilization of integrated circuits by providing voltages stepped down from the line voltage while isolating the control transformer from the line voltage.

Abstract: An improved safety apparatus for automatically sealing hydraulic lines within a sub-sea well casing when said casing is disconnected from an associated well head connector and Christmas tree assembly, has mandrel means associated with a well head connector assembly and valve means generally coaxially aligned within and to the casing means for controlling fluid flow through associated hydraulic lines, the valve means being moved into a valve-opened position by the mandrel means as the well head connector assembly is landed on the well casing head. Bias means associated with the valve means are provided for urging the valve means into a valve-closed position to seal the hydraulic lines when the mandrel means is withdrawn from the valve means. Hydraulic fluid flow is through passages through the mandrel, the valve means and associated portions of the well head connector and casing head, respectively.