Abstract: A gain plate is made of reinforced plastic for attaching to a pole and a cross arm and includes a pole channel and a cross arm channel. The pole channel has a front plate, two side plates, and two end plates that that form a rear-facing cavity. There are a plurality of cross members disposed in the rear-facing cavity and at least some of the plurality of cross members having radiused surface. The cross arm channel is disposed perpendicularly to the pole channel, the cross arm channel configured to received therein a cross arm.

Abstract: A gain plate is made of reinforced plastic for attaching to a pole and a cross arm and includes a pole channel and a cross arm channel. The pole channel has a front plate, two side plates, and two end plates that that form a rear-facing cavity. There are a plurality of cross members disposed in the rear-facing cavity and at least some of the plurality of cross members having radiused surface. The cross arm channel is disposed perpendicularly to the pole channel, the cross arm channel configured to received therein a cross arm.

Abstract: An O-ring seal system for pipe flanges having a backing ring, an O-ring seal positioned within the backing ring, and a vacuum ring positioned within the O-ring seal. The backing ring and the vacuum ring form a rigid base against which mating flanges on pipes can be bolted together, thereby preventing bending of the mating flanges and permitting flange bolts to be torqued to their full tensile load limit without damage to the mating flanges. The O-ring seal system is constructed so that the O-ring seal is retained between the mating flanges without the need to position the O-ring seal in a groove in one of the mating flanges. Bending of the flanges is minimized since the flanges are clamped against the backing ring, minimizing stresses due to bending, thereby extending the service life of the flanges.

Abstract: A gain plate is made of reinforced plastic for attaching to a pole and a cross arm and includes a pole channel and a cross arm channel. The pole channel has a front plate, two side plates, and two end plates that that form a rear-facing cavity. There are a plurality of cross members disposed in the rear-facing cavity and at least some of the plurality of cross members having radiused surface. The cross arm channel is disposed perpendicularly to the pole channel, the cross arm channel configured to received therein a cross arm.

Abstract: A gain plate is made of reinforced plastic for attaching to a pole and a cross arm and includes a pole channel and a cross arm channel. The pole channel has a front plate, two side plates, and two end plates that that form a rear-facing cavity. There are a plurality of cross members disposed in the rear-facing cavity and at least some of the plurality of cross members having radiused surface. The cross arm channel is disposed perpendicularly to the pole channel, the cross arm channel configured to received therein a cross arm.

Abstract: A gain plate is made of reinforced plastic for attaching to a pole and a cross arm and includes a pole channel and a cross arm channel. The pole channel has a front plate, two side plates, and two end plates that that form a rear-facing cavity. There are a plurality of cross members disposed in the rear-facing cavity and at least some of the plurality of cross members having radiused surface. The cross arm channel is disposed perpendicularly to the pole channel, the cross arm channel configured to received therein a cross arm.

Abstract: An O-ring seal system for pipe flanges having a backing ring, an O-ring seal positioned within the backing ring, and a vacuum ring positioned within the O-ring seal. The backing ring and the vacuum ring form a rigid base against which mating flanges on pipes can be bolted together, thereby preventing bending of the mating flanges and permitting flange bolts to be torqued to their full tensile load limit without damage to the mating flanges. The O-ring seal system is constructed so that the O-ring seal is retained between the mating flanges without the need to position the O-ring seal in a groove in one of the mating flanges. Bending of the flanges is minimized since the flanges are clamped against the backing ring, minimizing stresses due to bending, thereby extending the service life of the flanges.

Abstract: A fiber-reinforced composite structure, such as a cross arm for use in the power industry, having a rectangular outer cross-sectional shape and an inner hollow core having a curvilinear cross-sectional shape.

Abstract: A fiber-reinforced composite structure, such as a cross arm for use in the power industry, having a rectangular outer cross-sectional shape and an inner hollow core having a curvilinear cross-sectional shape.

Abstract: A fiber-reinforced composite structure, such as a cross arm for use in the power industry, having a rectangular outer cross-sectional shape and an inner hollow core having a curvilinear cross sectional shape. The present invention provides a composite structural element or device including, but not limited to, a cross arm or beam that can be applied in a variety of industrial and non-industrial settings including, but not limited to, the power distribution industry.

Abstract: A fiber-reinforced composite structure, such as a cross arm for use in the power industry, having a rectangular outer cross-sectional shape and an inner hollow core having a curvilinear cross sectional shape. The present invention provides a composite structural element or device including, but not limited to, a cross arm or beam that can be applied in a variety of industrial and non-industrial settings including, but not limited to, the power distribution industry.