Abstract: A hinged structural building element and collapsible system of building elements is disclosed. The core element is a relatively flat structural piece having a hinge section extending from one edge of the element to an opposite edge of the element. The hinge section allows the building element or structural piece to be essentially folded upon itself A preferred embodiment of the hinge section extending the length of each of the building elements is a living hinge. The living hinge may be fabricated from any of a large variety of materials including a flexible or pliable material, such as plastic or rubber, tape, string, wire, rubberized O-rings, and/or any of a wide variety of textile materials. The system of building elements may be easily interconnected to construct and build various structures, in various scales and sizes, including box shapes, cube shapes, or structures as complex as towers, bridges, and geo-domes.

Abstract: A magnetic device having a stator assembly having a magnetic flux return path comprising at least a pair of pole plates located a fixed distance apart from each other and at least one flux return strip between each pair of spaced apart pole plates, and a rotor assembly having permanent magnetic material and being disposed for rotation relative to the stator assembly. The device further includes an electrical connector. Use of the flux return strip facilitates flexible design of the electrical connector for integral mounting of the device to mating components or flexible design of light-weight non-metallic housings and mounting Systems for mounting of the device to mating components.

Abstract: A tent structure capable of being configured into a variety of distinct shapes for different recreational purposes is disclosed. The tent structure may be comprised of a plurality of stringers pivotally interconnected to form geometric subsegments and a shaped skin attachable to the stringers, or may be constructed from a plurality of geometric-shaped plates flexibly interconnected to each other.

Abstract: A method of charging a borehole with at least first and second separate sections of explosive material, which method comprises the steps of providing a detonating cord extending into the borehole, providing a first primer on a first carrier having a time delay connection between the cord and the first primer, this time delay having a first selected value, providing a second primer on a second carrier having a time delay connection between a cord and the second primer, the time delay of the second carrier having a second selected value different from the first selected value, sliding the first carrier and primer along the cord and into detonation association with the first section of explosive material and sliding the second carrier and primer along the same cord to detonation association with the second section of explosive material.

Abstract: A method of charging a borehole with at least first and second separate sections of explosive material, which method comprises the steps of providing a detonating cord extending into the borehole, providing a first primer on a first carrier having a time delay connection between the cord and the first primer, this time delay having a first selected value, providing a second primer on a second carrier having a time delay connection between a cord and the second primer, the time delay of the second carrier having a second selected value different from the first selected value, sliding the first carrier and primer along the cord and into detonation association with the first section of explosive material and sliding the second carrier and primer along the same cord to detonation association with the second section of explosive material.

Abstract: A method of charging a borehole with at least first and second separate sections of explosive material, which method comprises the steps of providing a detonating cord extending into the borehole, providing a first primer on a first carrier having a time delay connection between the cord and the first primer, this time delay having a first selected value, providing a second primer on a second carrier having a time delay connection between a cord and the second primer, the time delay of the second carrier having a second selected value different from the first selected value, sliding the first carrier and primer along the cord and into detonation association with the first section of explosive material and sliding the second carrier and primer along the same cord to detonation association with the second section of explosive material.

Abstract: A method of charging a borehole with at least first and second separate sections of explosive material, which method comprises the steps of providing a detonating cord extending into the borehole, providing a first primer on a first carrier having a time delay connection between the cord and the first primer, this time delay having a first selected value, providing a second primer on a second carrier having a time delay connection between a cord and the second primer, the time delay of the second carrier having a second selected value different from the first selected value, sliding the first carrier and primer along the cord and into detonation association with the first section of explosive material and sliding the second carrier and primer along the same cord to detonation association with the second section of explosive material.