Abstract: An apparatus for the generation of rifle targets for load development and accuracy testing of scope assisted rifles is disclosed in which the rifle targets have sighting areas optimized for a particular scope. The apparatus comprises a base having a first axis and a second axis orthogonal to the first axis, a plurality of apertures in the base for forming the sighting areas on the target, pilot means within the base for successively positioning the apertures to form the sighting areas and lines of space control disposed about the pilot means for optimizing the dimensions of the sighting areas. The present invention is utilized to generate rifle targets having sighting areas with dimensions optimized to the power of the scope and the width of the cross hairs. An embodiment of the present invention is capable of generating targets having sighting areas with dimensions optimized by the size of the dot reticle of the scope.

Abstract: A laser radar system and method for tracking speckle generated by the interaction of a beam of coherent electromagnetic radiation with a target to enhance the signal to noise ratio of a return signal is disclosed. The radar system is formed with a transceiver having a common transmit/receive optical path including beam steering mirrors capable of impressing a conical scan on a transmitted and received beam, a heterodyne circuit capable of sensing the position of a speckle maximum within the aperture of the transceiver, a peak detector capable of processing the output of the heterodyne circuit, a phase sensitive detector capable of producing a two axis discriminate proportional to the offset error of the speckle maximum and a transceiver control responsive to the two axis discriminate to provide transceiver pointing to maintain the speckle maximum within the aperture.

Abstract: A stable resonator is disclosed capable of providing a laser beam having both high power and good optical quality from a large volume gain medium. The stable resonator is formed having an optical cavity defined at one end by an unstable resonator and at the other end by a reflector in optical communication with the unstable resonator.

Abstract: An unstable resonator having high magnification and capable of accommodating an active medium having high gain and small dimensions is disclosed. The unstable resonator, formed with a pair of coupled cavities, has a diffraction grating capable of providing high resolution of the bandwidth of radiation from a high gain medium such as a dye medium and is capable of providing a laser beam with a continuous cross-section having far field characteristics of high quality.

Abstract: The invention is a water closet flange wrench and puller comprising a base element having alignment means on each end, and having a pair of line-up studs which are attached to the bottom surface of said base element and are slideable engageable with the respective bolt head receiving slots in the water closet flange. The line-up studs are aligned with the axis of the water closet flange bolt head receiving slots, and the head element engages the bolt head receiving slots allowing the flange to be rotated in the clockwise or counterclockwise direction or to be pulled from the soil pipe. The base element contains a means of indicating the alignment of the water closet flange bolt head receiving slots for proper mating with a water closet. The water closet flange wrench and puller has a handle attached to the top surface of the base element to facilitate rotating the water closet flange for proper alignment and to pull an improperly aligned water closet flange from a soil pipe.

Abstract: A method for obtaining a hole in a workpiece essentially free of a recast layer and heat affected zone with laser radiation is disclosed. Pulses of laser radiation having durations comparable to the time required to vaporize workpiece material, typically less than ten nanoseconds, and power densities at the workpiece sufficient to produce vaporization, typically in excess of a billion watts per square centimeter, are interacted with a workpiece in an oxidizing environment to produce vaporization of workpiece material. The vapor reacts with the gas to produce a vapor oxide which does not adhere to the workpiece resulting in the absence of a recast laywer. A hole having a desired size and shape is obtained by interacting the pulses of radiation with the workpiece at a high rate of repetition, typically in excess of ten pulses per second, until a desired amount of material is removed. The pulse duration is less than the thermal reaction time of the material resulting in the absence of a heat affected zone.

Abstract: A welding device capable of providing a blanket of nonreactive gas to isolate atmospheric gases from a weld zone to prevent weld contamination and capable of providing a stream of suppression gas across the path of a welding beam to suppress the formation of a beam absorbing plasma is disclosed. The device comprises a housing having a welding beam entrance port, a structure wall cooperating with the housing to form a first cavity therein and having an exit port aligned with the entrance port, means for supplying suppression gas to the first cavity, means for exhausting the suppression gas from the first cavity, a base cooperating with the housing and the structure wall to form a second cavity within the housing, means for providing a nonreactive gas to the second cavity, and means for passing the nonreactive gas from the second cavity to the weld zone.

Abstract: A burglar alarm generator is electrically connected to a conventional remote control automatic garage door opener to provide a visual and/or audible signal to deter potential burglars from the residence. The alarm generator (such as a siren or the like capable of providing a loud noise) is activated on command from a remote control transmitter typically used with automatic garage door openers. Circuitry within the alarm generator provides the capability to electrically bypass the alarm for operation of the opener in its normal mode. The alarm generator is capable of being energized and activated from within the residence.