Abstract: A modular precast concrete structure system to form a portion of a subsurface storage basin, the system including a concrete slab having a first edge and opposite second edge, and a first concrete side wall having an outer surface extending from the first edge substantially perpendicularly to the concrete slab, and a second concrete side wall having an outer surface extending from the second edge substantially perpendicularly to the concrete slab, the outer surfaces of the first and second concrete side walls being configured to be substantially parallel, each of the first and second side walls being configured with canted inner surfaces such that the first and second side walls taper in thickness away from the slab, and a plurality of footings each configured with a footing groove along an upper surface thereof, the footing grooves configured to receive a bottom edge of at least one of the first and second side walls therein.

Abstract: A precast composite wall structure and method for forming the wall structure are disclosed. The method includes providing a casting bed defining a plurality of shapes corresponding to a three-dimensional outer surface of a wall structure, placing a first layer of uncured concrete to conform to the shapes defined by the lower surface, positioning a forming member in overlying relation above the frame, the forming member defining a plurality of rectangular-shaped channels therebetween, positioning a stud frame within the casting bed along the forming member, placing a second layer of uncured concrete within the casting bed to conform to the rectangular-shaped channels between the rectangular protrusions, and allowing the concrete to cure.

Abstract: A modular precast concrete structure system to form a modular precast concrete structure as a portion of a subsurface storage basin is provided, the system including a concrete slab having a first edge and opposite second edge, and a first concrete side wall having an outer surface extending from the first edge substantially perpendicularly to the concrete slab, and a second concrete side wall having an outer surface extending from the second edge substantially perpendicularly to the concrete slab, the outer surfaces of the first and second concrete side walls being configured to be substantially parallel, each of the first and second side walls being configured with canted inner surfaces such that the first and second side walls taper in thickness away from the slab, and a plurality of footings each configured with a footing groove along an upper surface thereof, the footing grooves configured to receive a bottom edge of at least one of the first and second side walls therein.

Abstract: A precast concrete panel and method for forming the panel are disclosed. A method of forming the panel to be used as a floor, wall, or roof structure includes positioning one or more forming members within a casting bed having a plurality of upright surfaces defining a generally rectangular interior area, the one or more forming members comprising an insulating material extending along a length dimension of the one or more forming members to define a plurality of rectangular-shaped channels in a parallel and spaced-apart relationship, placing uncured concrete within the casting bed and allowing the concrete to cover the one or more forming members and substantially fill the channels, and allowing the concrete to cure.

Abstract: A precast concrete panel and method for forming the panel are disclosed. A method of forming the panel to be used as a floor, wall, or roof structure includes positioning one or more forming members within a casting bed having a plurality of upright surfaces defining a generally rectangular interior area, the one or more forming members comprising an insulating material extending along a length dimension of the one or more forming members to define a plurality of rectangular-shaped channels in a parallel and spaced-apart relationship, placing uncured concrete within the casting bed and allowing the concrete to cover the one or more forming members and substantially fill the channels, and allowing the concrete to cure.

Abstract: A modular precast concrete structure system to form a modular precast concrete structure as a portion of a subsurface storage basin is provided, the system including a concrete slab having a first edge and opposite second edge, and a first concrete side wall having an outer surface extending from the first edge substantially perpendicularly to the concrete slab, and a second concrete side wall having an outer surface extending from the second edge substantially perpendicularly to the concrete slab, the outer surfaces of the first and second concrete side walls being configured to be substantially parallel, each of the first and second side walls being configured with canted inner surfaces such that the first and second side walls taper in thickness away from the slab, and a plurality of footings each configured with a footing groove along an upper surface thereof, the footing grooves configured to receive a bottom edge of at least one of the first and second side walls therein.

Abstract: A precast concrete panel and method for forming the panel are disclosed. A method of forming the panel to be used as a floor, wall, or roof structure includes positioning one or more forming members within a casting bed having a plurality of upright surfaces defining a generally rectangular interior area, the one or more forming members comprising an insulating material extending along a length dimension of the one or more forming members to define a plurality of rectangular-shaped channels in a parallel and spaced-apart relationship, placing uncured concrete within the casting bed and allowing the concrete to cover the one or more forming members and substantially fill the channels, and allowing the concrete to cure.

Abstract: A precast concrete wall structure and method for forming a wall structure are disclosed. A forming member is positioned within a casting bed. The forming member comprises a layer of insulating material defining a plurality of integrally-formed rectangular protrusions extending in a parallel and spaced-apart relationship to one another to define a plurality of rectangular-shaped channels therebetween. The forming member also defines at least one cutout for defining a first portion of a fastener for securing the wall structure to a support structure. A second portion of the fastening member is positioned within the cutout. Uncured concrete is placed within the casting bed and allowed to cure.

Abstract: A modular precast concrete structure to form a portion of a subsurface storage basin, and a method of forming the structure, is provided, the structure including a concrete slab having a first edge and opposite second edge, and a first concrete side wall having an outer surface extending from the first edge substantially perpendicularly to the concrete slab, and a second concrete side wall having an outer surface extending from the second edge substantially perpendicularly to the concrete slab, the outer surfaces of the first and second concrete side walls being configured to be substantially parallel, each of the first and second side walls being configured with canted inner surfaces such that the first and second side walls taper in thickness away from the slab.

Abstract: A precast concrete wall structure and method for forming a wall structure are disclosed. A forming member is positioned within a casting bed. The forming member comprises a layer of insulating material defining a plurality of integrally-formed rectangular protrusions extending in a parallel and spaced-apart relationship to one another to define a plurality of rectangular-shaped channels therebetween. The forming member also defines at least one cutout for defining a first portion of a fastener for securing the wall structure to a support structure. A second portion of the fastening member is positioned within the cutout. Uncured concrete is placed within the casting bed and allowed to cure.

Abstract: The present invention provides a collapsible shaft and control assembly that is useful for transferring rotational control valve movements to a control surface. The invention includes a housing, shaft, and actuator arm. The housing defines a hollow cylinder. The shaft has a resilient end with a plurality of flexible strips capable of radial bending so as to transition between an expanded position and a compressed position. The shaft is positioned in the hollow cylinder, in the expanded position, so that the shaft can rotate. The actuator arm is positioned within the resilient end of the shaft so as to maintain the resilient end of the shaft in the expanded position. Both the actuator arm and shaft include reciprocal engagement means, and the actuator arm and shaft are positioned so as to engage the reciprocal engagement means. A rotational movement of the actuator arm thus causes a rotational movement of the shaft. A flapper affixed to the shaft can direct air depending on the radial position of the shaft.

Abstract: A regulator valve includes dual actuators that operate according to different principles to position a valve element to either an open or a closed position. One actuator, which is an electromechanical actuator, operates in response to electrical command signals. The other actuator, which is a pneumatic actuator, operates in response to a fluid pressure.

Abstract: A filter bypass valve is disposed in parallel with an aircraft cabin air filtration system air filter. During normal operation, air is filtered through the air filter at an air flow that meets air flow requirements of the system. The bypass valve is designed to remain closed during normal use, and to open if the differential pressure across the air filter reaches a predetermined opening differential pressure to allow airflow to be partially or fully diverted around the air filter.

Abstract: The present invention provides a lounge valve mounting housing and assembly. The housing and assembly are useful for directing air through ducts, and particularly the assembly is useful for directing air, or other fluid, through Y-shaped junctions. The housing comprises in part a plate and a supported platform. The plate mounts to a duct. An actuator assembly can be affixed to the platform. The housing further includes a cylinder; a shaft is disposed within the cylinder and extends into the duct. A flapper affixed to the shaft can direct air depending on the radial position of the shaft. The housing and assembly offers weight and capital advantages over dual valve assemblies.