Abstract: A hermetically sealed optical fiber cable (20) includes a core (21) comprising a plurality of optical fiber ribbons (22,22) disposed within a core tube (30) comprised of a high temperature resistant polymeric material. The core tube is disposed within a hermetic sealing member (40) which comprises a metal of low electrochemical activity having a sealed seam. An outer jacket (50) is disposed about the hermetic sealing member. The core may be filled with a waterblocking filling material (35). The material of the core tube undergoes only limited degradation because of the limited amount of oxygen and/or moisture trapped in the hermetically sealed cable. The filling material and/or other materials of the cable scavenge moisture and oxygen which travel longitudinally of the cable and reach portions of the cable subjected to a high temperature because of a leak in an adjacent steam line.

Abstract: An optical fiber package (52) includes a length of optical fiber (22) wound in a plurality of convolutions on a bobbin (50). In order to maintain the convolutions in a precision wound package and to prevent snags during payout, it is necessary that each convolution of optical fiber be adhered to at least a portion of an adjacent convolution. This is accomplished by providing the length of optical fiber with an adhesive material (32) which is not tacky at room temperature but which becomes tacky at a predetermined temperature. After the convolutions have been wound on the bobbin, the bobbin is treated to cause the adhesive material to become tacky and cause each convolution to adhere to at least a portion of adjacent convolutions. Suitable adhesion is caused to occur with any adhesive material for which molecular bonding can occur across the interface between contiguous portions of adjacent convolutions as a result of suitable treatment.

Abstract: Methods are provided for making an optical fiber transmission medium which includes optical fiber (21) provided with a coating system (31) typically including two layers each of a different coating material. An inner layer (32) of a first coating material is called the primary coating and an outer layer is termed the secondary. In order to achieve desired performance characteristics, performance is related to properties of a coating system. The coating materials have well defined moduli and the second coating material has an elongation which is substantially less than in prior secondary coating materials. Adhesion levels which are optimized rather than maximized are substantially stable with respect to time. Curing of the coating materials may be accomplished simultaneously or in tandem with the application separately of the coating materials.

Abstract: An optical fiber package (52) includes a length of optical fiber (22) wound in a plurality of convolutions on a bobbin (50). In order to maintain the convolutions in a precision wound package and to prevent snags during payout, it is necessary that each convolution of optical fiber be adhered to at least a portion of an adjacent convolution. This is accomplished by providing the length of optical fiber with an adhesive material (32) which is not tacky at room temperature but which becomes tacky at a predetermined temperature. After the convolutions have been wound on the bobbin, the bobbin is treated to cause the adhesive material to become tacky and cause each convolution to adhere to at least a portion of adjacent convolutions. Suitable adhesion is caused to occur with any adhesive material for which molecular bonding can occur across the interface between contiguous portions of adjacent convolutions as a result of suitable treatment.

Abstract: A buffered optical fiber (20) includes an optical fiber (21) comprising a core and a cladding. Typically, the optical fiber is enclosed by at least one layer (23) of coating material. The optical fiber is enclosed by a plastic buffer layer (30). Interposed between the optical fiber and the buffer layer is a decoupling material (40) which provides a controlled coupling of the buffer layer to the underlying coating material. As a result, there is sufficient adhesion between the buffer layer and the underlying coating material to maintain the buffer layer in place during normal use of the buffered optical fiber. On the other hand, the adhesion is low enough so that the buffer layer may be removed upon the application of resonably low stripping forces. Advantageously, the decoupling material also allows the selective removal of the optical fiber coating material as well as the plastic buffer layer.

Abstract: An optical fiber transmission medium (30) ) includes optical fiber (21) provided with a coating system (31) typically including two layers each of a different coating material. An inner layer (32) of a first coating material is called the primary coating and an outer layer is termed the secondary. In order to achieve desired performance characteristics, performance is related to properties of a coating system. The coating materials have well defined moduli and the second coating material has an elongation which is substantially less than in prior secondary coating materials. Adhesion levels which are optimized rather than maximized are substantially stable with respect to time. Curing of the coating materials may be accomplished simultaneously or in tandem with the application separately of the coating materials.

Abstract: An optical fiber package (52) includes a length of optical fiber (22) wound in a plurality of convolutions on a bobbin (50). In order to maintain the convolutions in a precision wound package and to prevent snags during payout, it is necessary that each convolution of optical fiber be adhered to at least a portion of an adjacent convolution. This is accomplished by providing the length of optical fiber with an adhesive material (32) which is not tacky at room temperature but which becomes tacky at a predetermined temperature. After the convolutions have been wound on the bobbin, the bobbin is treated to cause the adhesive material to become tacky and cause each convolution to adhere to at least a portion of adjacent convolutions. Suitable adhesion is caused to occur with any adhesive material for which molecular bonding can occur across the interface between contiguous portions of adjacent convolutions as a result of suitable treatment.

Abstract: An electric outlet assembly includes a receptacle plate having an opening and an inner surface when secured to a flat surface; first and second U-shaped blocks positioned adjacent the opening at the inner surface for supplying AC current; a ground post positioned in line with the opening at the inner surface for providing a ground contact; and a plug for removably connecting an electric cord to the first and second U-shaped blocks and the ground post. In a first embodiment, the plug includes a flat oval plate having electrical contacts at opposite ends thereof and a connectorpost positioned centrally therein which, when inserted through the opening of the receptacle plate and rotated by 90.degree., provides electrical connection between the electrical contacts and the U-shaped blocks and between the connector post and the ground post.

Abstract: Improved fluid pressure discharge safety system for automatically detecting nd simultaneously suppressing opposed exhaust streams of an accidentally fired and stored missile. The system is generally made up of first and second nozzles for discharging sprays of fluid under pressure. The first nozzle is provided with an exhaust detection arrangement. This arrangement includes a discharge control plug that maintains the first and second nozzles in a securely closed condition for preventing discharge of pressure fluid from either nozzle. However, the detection arrangement, when impacted by an exhaust stream, causes ejection of the fluid pressure discharge control plug from the first nozzle thereby opening the first nozzle for discharge of pressure fluid therefrom. A first valve of novel construction is operatively associated with the plug and controls the operation of a second valve. The second valve controls the discharge of pressure fluid from the second nozzle.

Abstract: A device for reducing the muzzle blast and flash from large caliber guns is disclosed. A container having a plurality of internal chambers and baffel plates filled with an aqueous foam is mounted to the muzzle of the gun barrel. The foam and chambers co-operate to substantially suppress muzzle blast noise and completely suppress muzzle flash.

Abstract: A cosmetic mirror comprising a mirror housing having a centrally-located aperture therein, lighting means mounted within the housing laterally adjacent the aperture, a mirror assembly comprising two back-to-back mirrors pivotally mounted within the aperture, a rotatable support stand attachment secured to the housing, comprising a rotatable cylindrical support bar having a center aperture section therein, end aperture sections therein, a first set of meshing gears within the end aperture sections, spring means operatively communicating at one end thereof with the meshing gears and at the opposite end thereof with the end aperture sections of the rotatable support bar for outwardly biasing the meshing gears in the end aperture sections, and a second set of meshing sections fixed to the mirror housing at the base thereof or fixed to guide rails slidably secured within said mirror housing at the base thereof for contacting the first set of meshing gears in a meshing arrangement.

Abstract: An electrical explosive igniter, or initiator, of the cylindrical type hag electrical leads coming through to a bridge wire in an ignition mix container. An anvil cutter of cylindrical shape is force-fitted into the center of the igniter and a movable piston is spaced therefrom. The piston has a tapered internal boring. When the piston is forced sharply backward by the internal pressures of the ignited explosives, it shears the wires against the anvil cutter and the tapered portion forms a tight metal-to-metal seal between the anvil cutter and the igniter wall. The greater the pressure, the better the seal becomes.