Abstract: The invention relates to an optical detonator including a device to accept a fiberoptic light guide cable 2 held by an attachable device within a elongated hollow body portion containing a frequency converter element 6 placed intermediate the fiberoptic light guide cable terminal end 2 and a quantity of contained explosive material 9 placed adjacent the closed end of the elongated hollow body portion 1 of the detonator.An electromagnetic radiation pulse sent down the fiberoptic cable impinges on the intermediately housed frequency converter element 6 to be converted to infrared radiation energy to fire a "flashing" compound 7 to activate the explosive material 9 of the detonator.

Abstract: The invention relates to an Optical Detonator including a provision to accept a fiberoptic light guide cable 2 within a terminal socket 12 whereby an electromagnetic radiation signal passed down the fiberoptic light guide cable 2 activates a photo-conductor device 16 located within the hollow body portion 3 of the detonator 1 to allow an adjacent primary battery device 20 as the electrical energizing source to pass an electric current through fusehead 7/8 to fire the detonator.

Abstract: Amphibious aircraft having an aerodynamic wing attached to a main fuselage with a centrally positioned channel flow tunnel under the middle thereof. At least one large diameter in-fuselage ducted fan assembly is housed in a duct extending through the fuselage. At least one main helicopter-like rotary assembly provided on a supporting superstructure above the main fuselage. A tail is connected to the main fuselage and has areas appropriate anti-torque mechanisms. A common drive assembly is operatively linked to the fan assembly, the helicopter-like rotary assembly, and the anti-torque device.

Abstract: A detonator for explosive compositions comprises an outer jacket containing a charge of explosive detonating material which is initiated by a deflagratory primer composition ignitable by an electrical resistance element. The electrical resistance element is coupled with a photo-conductive diode or transistor to close an electrical circuit to initiate detonation in response to laser radiation transmitted to the photo-conductive diode or transistor via an optical light guide.

Abstract: A portable branding device which uses a high current/low voltage power source such as a twelve volt tractor battery, for heat branding of livestock. The device includes a hollow body having first and second ends and a handle portion. A plurality of brand elements are detachable mounted to the second end and spaced from the second end. The branding device has an insulating panel. A plurality of legs is connected to the insulating panel for supporting the brand element. A series of terminals extend through the insulating panel and the brand element is attached to the terminals. Electrical connecting devices connect the brand element in spaced relation to the second end of the main body and a high current relay switching means, such as a solenoid switch is mounted within the main body for transmitting electricity to the brand element. A low current finger actuated switch is connected to the handle for actuating the high current relay switching means.