Abstract: Concrete forms and manufacturing methods thereof are disclosed herein. In one aspect, a concrete form panel includes: a wood-based composite structural panel having a first side and a second side. The concrete form panel includes a urethane layer coupled to the first side of the panel. In another aspect, a method for manufacturing a concrete form panel includes sanding a first side of a wood-based composite structural panel; loading the panel into a manufacturing line; conveying the wood-based composite structural panel to a spray booth; spraying a urethane layer onto the first side of the panel; conveying the panel out of the spray booth and into a curing station; curing the urethane layer onto the first side of the panel; and sanding the urethane layer. In another aspect, a concrete form includes a plurality of concrete form panels having a urethane layer coupled to a first side of the panel.

Abstract: An improved garment, such as a shirt, is provided that can comfortably grip a wearer's body and remain in place, even if the wearer is engaged in physical activity. A preferred fabric for garments in accordance with the invention is spandex, a polyether-polyurea copolymer also known as elastane. When is the garment is a shirt, the shirt cuffs can be provided with a band of silicone on the inner surface of the cuffs. The band can be formed as stripes, dots or patches to form a uniform gripping surface around the wearer's arm.

Abstract: An improved garment, such as a shirt, is provided that can comfortably grip a wearer's body and remain in place, even if the wearer is engaged in physical activity. A preferred fabric for garments in accordance with the invention is spandex, a polyether-polyurea copolymer also known as elastane. When is the garment is a shirt, the shirt cuffs can be provided with a band of silicone on the inner surface of the cuffs. The band can be formed as stripes, dots or patches to form a uniform gripping surface around the wearer's arm.

Abstract: A dynamic transducer having a voice coil attached to and suspended between two diaphragms that comprise two opposite sides of an enclosure. The voice coil is suspended within the enclosure on a center support that passes through the enclosure and is attached to the diaphragms. Within the enclosure, an annular magnet having a hollow cylindrical ferromagnetic core is disposed between two annular ferromagnetic plates and is attached to one of the plates. A narrow gap is formed within the magnetic structure. The voice coil travels within the gap and is attached to a non-ferromagnetic shaft that extends through the hollow cylindrical ferromagnetic core. The voice coil is fastened to the diaphragm comprising each side of the housing, so that the diaphragms move to produce audible sound. An internal fusing mechanism is directly attached to the voice coil to protect the coil against thermal and electrical overload.