Abstract: A method and apparatus for eliminating heat build-up caused by air friction on wings and other air foils, especially common in high-speed aircraft. As an aircraft is moving, a small portion of air in the airstream moving by the wing or other air foil is passed through an air intake valve on the wing, into a Venturi section and then into a chamber within the wing or frame where the air is compressed naturally. Each Venturi section consists of a converging and diverging nozzle which creates a substantial cooling effect when the high speed air passes through it and is compressed and released. The intake valve spins or flips when hit by the airstream so it alternately intakes and exhausts the air through the Venturi section, thereby causing a double cooling effect. A second embodiment uses valves, one on the leading edge for air intake and the second near the back of the lower surface of the wing for air exhaust.

Abstract: A structure for a weapon apparatus that can be made of polymer materials is provided. In addition to many novel features, including a counter-torque muzzle cap, an operating handle and gas-operated link, this weapon apparatus has a unique firing mechanism as specifically claimed herein. The firing mechanism comprises a trigger bar having a cantilever-shaped release spring for biasing the trigger bar forward and an upwardly extending disconnector protruding into the path of the hammer. A rotating safety to lock the sear mechanism is also provided.

Abstract: An automatic or semi-automatic pistol is made substantially of polymer materials. The pistol includes polymer upper and lower receivers and a polymer barrel attached to the upper receiver. The operating mechanism includes a bolt, block and a hammer, slidably mounted in the fixed upper receiver with the bolt and block and the hammer being separately springloaded. A gas operated link is positioned to rotate the pistol block from a locked to an unlocked position when actuated by gas from a fired cartridge. A gas port extends from the end portion of the barrel to one end portion of the gas operated link to move the link responsive to the gas pressure to thereby unlock the block so that the block, bolt and hammer can be operated by reaction to the gasses still in the weapon barrel.

Abstract: An automatic or semi-automatic pistol is made substantially of polymer materials. The pistol includes polymer upper and lower receivers and a polymer barrel attached to the upper receiver. The operating mechanism includes a bolt, block and a hammer, slidably mounted in the fixed upper receiver with the bolt and block and the hammer being separately springloaded. A gas operated link is positioned to rotate the pistol block from a locked to an unlocked position when actuated by gas from a fired cartridge. A gas port extends from the end portion of the barrel to one end portion of the gas operated link to move the link responsive to the gas pressure to thereby unlock the block so that the block, bolt and hammer can be operated by reaction to the gasses still in the weapon barrel.

Abstract: An automatic or semi-automatic pistol is made substantially of polymer materials. The pistol includes polymer upper and lower receivers and a polymer barrel attached to the upper receiver. The operating mechanism includes a bolt, block and a hammer, slidably mounted in the fixed upper receiver with the bolt and block and the hammer being separately springloaded. A gas operated link is positioned to rotate the pistol block from a locked to an unlocked position when actuated by gas from a fired cartridge. A gas port extends from the end portion of the barrel to one end portion of the gas operated link to move the link responsive to the gas pressure to thereby unlock the block so that the block, bolt and hammer can be operated by reaction to the gasses still in the weapon barrel.