Abstract: Program execution can be monitored and recorded for later playback. Certain state changes that can be predicted via a virtual processor during playback need not be recorded, so a compressed recording can be stored. To facilitate random access with respect to time during playback, key frames can be stored within the compressed recording. An index mechanism can associate key frames with particular memory addresses. Additionally, a snapshot of values for memory addresses can be used to further facilitate determining the value of a memory address without having to simulate execution. Multiprocessor executions can be supported, and playback can be done on a machine type different from that on which recording took place.

Abstract: A permanent magnet alternator including a stationary stator including a plurality of spaced stator poles projecting inwardly from the stator, a winding circuit wound through the spaces between the stator poles, a rotor assembly mounted for rotation within the stator, including a plurality of permanent magnets fixedly mounted on an outer circumferential surface of the rotor in alternating polarity, and a retaining shield for reducing the effects of centrifugal motion of the rotor during operation of the alternator.

Abstract: A prober for measuring the light output of digital devices integrally formed on a single wafer. The prober includes a light-integrating sphere sequentially aligned with selected devices. Each time that a device is aligned with the sphere, the device aligned with the sphere is activated, so that the light output of each device is individually measured. In the disclosed embodiment, the devices are vertical cavity surface emitting lasers (VCSELs) and light emitting diodes (LEDs).

Abstract: A prober for measuring the light output of digital devices integrally formed on a single wafer. The prober includes a light-integrating sphere sequentially aligned with selected devices. Each time that a device is aligned with the sphere, the device aligned with the sphere is activated, so that the light output of each device is individually measured. In the disclosed embodiment, the devices are vertical cavity surface emitting lasers (VCSELs) and light emitting diodes (LEDs).

Abstract: A blind spring clip fastener for insertion in a round hole in a work piece has a head portion and a shank portion extending perpendicular to the head portion. The shank portion comprises a pair of spaced-apart mirror image sections extending from opposite side edges of the head portion, each section including a resilient leg and a pair of wings integral with the free ends of the leg and extending toward the head portion at opposite side edges of the leg. Each wing is shaped so that it has a side edge extending upwardly-outwardly beyond the plane of its leg and a free end extending from a point beyond the plane of the associated leg relatively steeply upwardly-inwardly toward the head portion.

Abstract: An electrical connector includes a housing composed of two hinged-together housing sections molded of plastic as a single unitary part. One housing section defines a pair of spaced-apart resilient walls with a slot between them and a series of connector locations spaced along the slot. The other housing section defines a series of compartments which are in register with the connector locations when the two housing sections are superimposed. A flexible printed circuit is folded into the slot, the circuit having pairs of conductive paths positioned in the slot at each said connector location, which paths extend out of the slot so that electrical connections can be made to provide electrical power to bulbs removably retained at said connector locations and in electrical contact with the path pairs at said locations.

Abstract: Fasteners for securing a shaped embellishing molding across the gap between the peripheral edge of a fixed window panel and fillister support surface in which the panel is mounted in an automotive vehicle. The fasteners are integrally fabricated from a material such as plastic and are adapted to mount in the gap without the need for welded studs or other means secured to the fillister. Each fastener includes a base and pair of projecting resilient wings which are downwardly flexed to fit in the gap. The wings include beveled bearing faces that resiliently bear against the inside corner of the mounted panel and develop a reacting force tending to load and position the fastener flushly against both sides of the fillister. The beveled bearing faces also allow the fastener to take up large tolerances both in the width of the gap and in the spacing of the panel from the inner side of the fillister.

Abstract: An integral, spring metal fastener has the form of a generally flat, interrupted or incomplete ring and a pair of opposed, spaced hooked arms mounted within the ring and curvedly extending toward, but not completely to, the ring ends defining the interruption. The ring ends are squeezable together, as with pliers, to bring the hooked arms closer together and, when released, the ring and the hooked arms resiliently return to their original, uncompressed position. The hooked arms are adapted to be engaged within a hole in a mounting post so that the fastener can secure other mounting elements to the post. The fastener is particularly adapted for securing antivibration mounting elements of the type conventionally used in mounting vibration causing devices, such as compressors, in this manner.

Abstract: An eddy current probe for detecting cracks in metal skins and adjacent fastener holes which includes first and second coils wound about first and second vertically stacked ferromagnetic core members which members are held in alignment by an associated optically clear shoe member centered by a centering ring, rotation of the shoe within the centering ring permitting inspection of the entire circumference of a fastener hole.

Abstract: The drill pipe has a longitudinal section of smaller diameter and a pair of circumferentially separated grooves provided in an annular shoulder adjacent the smaller diameter portion of the pipe. Pipe-holding members to which a pawl is connected are circumferentially spaced adjacent the drill pipe. The pipe-holding members and pawls are simultaneously actuated so that the holding members fit around the smaller diameter portion of the pipe to support the pipe, and the pawls fit into the grooves in the pipe to permit either the breaking out of the pipe string or the making up of the pipe string, depending on which pawl is fitted into the groove.