Abstract: A method of manufacturing fluoropolymer micropowders with low perfluoroalkyl species (PFAS) content, such as perfluorooctanoic acid (PFOA). The method includes thermally treating, at a temperature from 125° C. to 300° C. Ma substantially oxygen free atmosphere and/or in a fluidized bed reactor, an irradiated or thermally degraded perfluorinated fluoropolymer. The method may also include micronizing the thermally treated low molecular weight fluoropolymer intermediate to provide a micropowder.

Abstract: The present invention is a composition that includes granular-grade polytetrafluoroethylene and a plurality of microspheres, where the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter.

Abstract: A mechanical device for alleviating pain from swelling caused by Baker's cysts and the like comprising a rigid arcuate tubular element placed in the cavity behind the knee joint and fastened by straps placed over the knee at the femur and the tibia.

Abstract: An ellipsoidal reflector system concentrating energy utilizing two effects- one being that light passing through one focus of an ellipse will tend to line up with the major axis after each reflection, combined with the other in the properties of ellipses rotated off-axis having one distributed focus and one point focus. After a few reflections light having originally passed through one focus is, for practical purposes, running along the major axis even though the major axis is approached as an asymptote. This energy concentration system would be quite useful as a source of highly collimated light such as would be more practical for field surveying work than, for example, lasers, for optical alignment, and fiber-optic carrier media input. In addition to light some of these ellipsoidal reflector systems for concentration of energy are also effective for ultrasonics and/or shock waves.

Abstract: An ellipsoidal reflector system concentrating energy utilizing two effects--one being that light passing through one focus of an ellipse will tend to line up with the major axis after each reflection, combined with the other in the properties of ellipses rotated off-axis having one distributed focus and one point focus. After a few reflections light having originally passed through one focus is, for practical purposes, running along the major axis even though the major axis is approached as an asymptote. This energy concentration system would be quite useful as a source of highly collimated light such as would be more practical for field surveying work than, for example, lasers, for optical alignment, and fiber-optic carrier media input. In addition to light some of these ellipsoidal reflector systems for concentration of energy are also effective for ultrasonics and/or shock waves.

Abstract: An elongated, coiled, electrical resistance heating filament is positioned along the major axis of an ellipsoidal reflector with its inner end positioned at the inner focus of the reflector and with the coil extending outwardly toward but short of an annular rim defining the front of the reflector. The coiled filament is supported by a pair of power supply leads connected to the inner and outer ends of thereof and forming stiff conductive support pillars mounted in a thickened support and seal portion at the apex of the reflector. The front of the reflector may be closed by a glass plate sealed to the annular rim. A secondary reflector may be provided on the major axis of the ellipsoidal reflector between the outer end of the coiled filament and the annular rim. The secondary reflector may be a figure of rotation of any shape, e.g., parabolic or conical, capable of throwing energy that would otherwise escape back through the coiled filament and serves to conserve energy and shield the eyes of the user.

Abstract: A sonic reflector comprising three mutually perpendicular walls of sound reflective material each of a generally right triangular shape. Plural arrays of such reflectors provide acoustical panels useful in assisting performers in monitoring their own performance on stage and in delivering enhanced sound to the audience. Plural reflector arrays have wide applications where it is desirable to return sound waves to the vicinity of the source.

Abstract: A one piece fairlead grommet for protecting an aircraft control cable where penetrating a bulkhead or cable support panel. The fairlead grommet has a generally cylindrical body with frustro conically shaped flanges and a through-slot, generally, longitudinally oriented. The slot forms an angle with a radius line drawn from the center of the grommet bore to permit the slot surfaces to be readily offset and the grommet collapsed around the control cable for installation with the control cable in place. The slot is further biased on a diagonal with respect to the horizontal axis of the grommet bore to ensure a wearing surface in contact with the cable at the slot.

Abstract: A radio frequency RF reflective surface of randomly deposited conductive roving lifted from the surface of a reflector mold after having been bonded with such as a polyester resin or epoxy resin. The roving in the form of a chopped element layer of fiberglass having a conductive material coating on the fiberglass is deposited from a chopper gun to cover an entire surface in the form desired for RF reflection and then, without interruption, non-conductive roving is used in the chopper gun to build up the necessary thickness and structural strength in the antenna with a bonding resin being simultaneously applied to fix the roving in place in the structure.

Abstract: A mechanical power transmission apparatus, of the differential gear type, for actuating an airplane control surface requiring two independent actuator inputs to a single control surface. Asymmetric loading to the control surface is accommodated by a mechanical fuse link. The fuse link is provided by employing a shear pin to attach the pinion gear to the pinion shaft, designed to fail at a predetermined differential torque between the two driven bevel gears. Positive disengagement of the gears is provided following fuse link release.