摘要:
A flying model airplane which has a triangular shaped fuselage (20) with a wing (34) attached through a combination of an attaching eye (28) passing through a wing interlocking member (38) held in place by a landing gear wire strut (54). A tail is similarly attached with a body dovetail fastener (32) penetrating a tail attaching plate (46) through which a stabilizer projecting finger (50) is positioned. The wing is further supported by a pair of tendons (40) attached to the fuselage through a hook (26) on one end and a wing supporting hook (36) on the other. The model is assembled or dissembled repeatively heretofore unavailable.
摘要:
A nozzle/valve device for a ducted rocket motor is provided. The nozzle valve device employs a design in which a nozzle throat blockage element can be moved by translational motion into and out of the nozzle throat section of the device. The blockage element is designed so that in the closed position the nozzle throat has a minimum cross-sectional flow area and therefore the nozzle throat is never fully closed. The seals employed in the nozzle/valve device are isolated from contact with reaction products of the gas generator and effective use of minimum amounts of erosion resistant materials is achieved.
摘要:
A thermal processing device for dry photographic paper using a minimum amt of electrical energy. A cylindrical drum is provided with heating elements on the inside surface and current is applied through a slip ring assembly. A non-metallic belt, substantially equal in width to the length of the cylindrical drum, is supported by rollers so that a portion of the belt engages the cylindrical drum. Rotation of the cylindrical drum causes rotation of the belt and a sheet of paper fed into the device is sandwiched between the belt and drum and is heated thereby to develop the dry photographic paper.
摘要:
A pedestal crane of compact construction having a small turning radius is provided for use on board ships and/or off-shore drilling platforms. The crane has a dynamic load compensator so that it may absorb shock loads due to waves on the surrounding body of water. The crane mast includes upright walls supporting a fuel tank and hydraulic tank with the prime mover being between said walls.
摘要:
An apparatus, system, and method are disclosed for concurrently forming a plurality of pipelines. The apparatus includes a support chassis coupled to at least one transportation facilitation member. The transportation facilitation member facilities the movement of the support chassis along a surface. A first pipe fuser is disposed on the support chassis and is configured to fuse a first section of pipe to a first pipeline. A second pipe fuser may also be disposed on the support chassis. The second pipe fuser may be configured to independently fuse a second section of pipe to a second pipeline. The first pipe fuser fuses the first section of pipe to the first pipeline with the support chassis in a stationary position. The second pipe fuser fuses the second section of pipe to the second pipeline with the support chassis in the same stationary position.