Abstract: Efficient fish farming techniques are described, including a land-based saltwater flow-through pool fed by seawater intakes, and efficient water flow and waste removal techniques that promote good fish growing conditions. Features include devices for encouraging laminar flow in the flow-through pool, and efficient waste removal, and multiple seawater intakes from different ocean depths.

Abstract: A plug system including: a plug tubular including a tubular body, an upstream tubular connection, and a downstream tubular connection; wherein: the upstream tubular connection and the downstream tubular connection are openings at opposite ends of the tubular body; and a plug assembly arranged in a housing including: a plug; a breaker object; and a seat; wherein: the plug is supported by the seat; the plug assembly has a first position and a second position; wherein in the first position, the plug intact; and in the second position the plug has been broken by the breaker object; wherein: the plug is stationary with respect to the housing in both the first and second position; there is a fluid connection between the upstream tubular connection and the downstream tubular connection: and the tubular body is a single continuous piece; and wherein the plug assembly is entirely arranged within the plug tubular.

Abstract: An asymmetric bearing ring to support a plug is disclosed. The bearing ring is an annular ring with an inner surface and an outer surface, wherein the inner surface and the outer surface are not parallel. The bearing ring can be part of a plug tubular system including a tubular body and a plug assembly, where the tubular body include a housing, and the plug assembly arranged in the housing include a plug, the asymmetric bearing ring, and a seat which supports the plug; and wherein the asymmetric bearing ring is arranged between the plug and the seat and/or the asymmetric bearing ring is arranged between the plug and the housing.

Abstract: Efficient fish farming techniques are described, including a land-based saltwater flow-through pool fed by seawater intakes, and efficient water flow and waste removal techniques that promote good fish growing conditions. Features include devices for encouraging laminar flow in the flow-through pool, and efficient waste removal, and multiple seawater intakes from different ocean depths.

Abstract: Two examples of a glass assembly were claimed where the glass assembly includes a plug with a middle edge surface, wherein the middle edge surface contains the widest portion of the plug. In the first example middle edge surface is curved, and in the other example the middle edge surface is in contact with a stabilizer. A plug assembly was also claimed, including a glass assembly in a housing, a seat arranged to support the plug, a breaker object configured to break the plug, wherein the middle edge surface contains the widest portion of the plug; and wherein a stabilizer is arranged in contact with the middle edge surface.

Abstract: A glass assembly including: a plug with a top surface and a bottom surface; a sealing bearing ring at least partially made of a non-elastomeric material; wherein: the sealing bearing ring arranged on the top surface or the bottom surface of the plug. Also, a plug assembly including: the glass assembly, arranged in a housing the glass assembly including a top surface and a bottom surface; a sealing bearing ring at least partially made of a non-elastomeric material the sealing bearing ring arranged on the top surface or the bottom surface of the plug; a seat arranged to support the plug; a breaker object configured to break the plug; and wherein the sealing bearing ring provides a seal between the glass assembly and the housing.

Abstract: A plug assembly including: a housing; glass assembly including a plug; a height adjuster including a mechanical adjuster; wherein: the glass assembly and the height adjuster are arranged in the housing; and the height adjuster is arranged to apply pressure to the glass assembly; and the height of the mechanical adjuster is adjustable.

Abstract: A plug assembly including a breaker object and a plug, having a first position in which the breaker object is not in contact with the plug and a second position where the breaker object is in contact with the plug, wherein the movement from the first position to the second position initiated by pressure applied to the plug, wherein: the breaker object includes an impact surface where the impact surface is the projection of the plug surface onto the breaker object, and the impact surface includes an impact point wherein: the impact point is the portion of the plug which makes contact with the breaker object when the plug assembly is in the second position; and the impact surface has the cross sectional shape of a portion of a conic section.

Abstract: A plug system including: a plug tubular including a tubular body, an upstream tubular connection, and a downstream tubular connection; wherein: the upstream tubular connection and the downstream tubular connection are openings at opposite ends of the tubular body; and a plug assembly arranged in a housing including: a plug; a breaker object; and a seat; wherein: the plug is supported by the seat; the plug assembly has a first position and a second position; wherein in the first position, the plug intact; and in the second position the plug has been broken by the breaker object; wherein: the plug is stationary with respect to the housing in both the first and second position; there is a fluid connection between the upstream tubular connection and the downstream tubular connection: and the tubular body is a single continuous piece; and wherein the plug assembly is entirely arranged within the plug tubular.

Abstract: A plug assembly arranged in a housing including: a plug, a breaker object, a seat, a shear ring and an assembly retainer. The plug is supported by the seat and the shear ring prevents the seat from moving in an axial direction. The shear ring is arranged such that when a threshold pressure differential is applied to a surface of the plug, the shear ring shears and allows for axial movement of the seat. The assembly retainer provides axial support to the breaker object, seat, or shear ring. A plug assembly arranged in a plug tubular. The plug tubular made of a single continuous piece.

Abstract: A plug assembly arranged in a housing including: a plug, a breaker object, a seat, a shear ring and a snap ring. The plug is supported by the seat and the shear ring prevents the seat from moving in an axial direction. The shear ring is arranged such that when a threshold pressure differential is applied to a surface of the plug, the shear ring hears and allows for axial movement of the seat. The plug assembly has a first position, a second position, and a third position. In the first position, the plug is not in contact with the breaker object, in the second position, the shear ring has sheared and the plug is in contact with the breaker object causing the plug to break, and in the third position, occurring during or after the plug makes contact with the breaker object, the snap ring is arranged to lock the seat into place to prevent the seat from moving axially.

Abstract: Efficient fish farming techniques are described, including a land-based saltwater flow-through pool fed by seawater intakes, and efficient water flow and waste removal techniques that promote good fish growing conditions. Features include devices for encouraging laminar flow in the flow-through pool, and efficient waste removal, and multiple seawater intakes from different ocean depths.