Abstract: Plumbing supply boxes may be made of a thermoset plastic material that will not melt or permit the boxes to collapse inside a wall if subjected to flames or high temperatures resulting from a fire. If the thermoset plastic boxes have a drain opening, a thermoplastic tubular drain adaptor may be connected thereto that can be solvent welded. Relatively small intumescent pads may be installed in close proximity to the drain opening which, if subjected to flames or high temperature caused by a fire, will expand and form an insulating char that seals off the drain opening. The boxes may be slidable in opposite directions along adjustable support brackets to permit the boxes to be mounted in any desired position in stud bays having different spacings between the stud walls for ease of alignment of one or more openings in the box with in-wall plumbing.

Abstract: Plumbing supply boxes may be made of a thermoset plastic material that will not melt or permit the boxes to collapse inside a wall if subjected to flames or high temperatures resulting from a fire. If the thermoset plastic boxes have a drain opening, a thermoplastic tubular drain adaptor may be connected thereto that can be solvent welded. Relatively small intumescent pads may be installed in close proximity to the drain opening which, if subjected to flames or high temperature caused by a fire, will expand and form an insulating char that seals off the drain opening. The boxes may be slidable in opposite directions along adjustable support brackets to permit the boxes to be mounted in any desired position in stud bays having different spacings between the stud walls for ease of alignment of one or more openings in the box with in-wall plumbing.

Abstract: Provided is a solar collector assembly that can be manufactured, assembled, and maintained efficiently. A number of arrays that include one or more reflective material formed in a parabolic shape can be attached to a backbone. The backbone is attached to a polar support that is positioned at or near the center of gravity for the solar collector assembly. The polar support at or near the center of gravity allows the entire assembly to be tilted, rotated and/or lowered for various purposes (e.g., service, maintenance, safety). The solar collector assembly can be transported as modular units and/or in a partially assembled state.

Abstract: System(s) and method(s) are provided for assembling and utilizing parabolic reflectors in a solar concentrator. Parabolic reflectors assembly starts with a low-cost, flat reflective material that is bent into a parabolic or trough shape via a set of support ribs that are affixed in a support beam. The parabolic reflectors are mounted on a support frame in various panels or arrays to form a parabolic solar concentrator. Each parabolic reflector focuses light in a line segment pattern. Light beam pattern focused onto a receiver via the parabolic solar concentrator can be optimized. The receiver is attached to the support frame, opposite the parabolic reflector arrays, and includes a photovoltaic (PV) module and a heat harvesting element that enable dual-mode energy conversion operation. To increase performance of the parabolic solar concentrator, the PV module can be configured to advantageously exploit a light beam pattern optimization regardless irregularities in the pattern.

Abstract: A solar collector can be rotated and tilted about a polar mount. The solar collector can be designed such that the center of gravity of the collector is aligned with the axis of the polar mount facilitating the use of smaller positioning devices. The collector can be placed in a position to prevent damage by inclement weather and allow easy access for maintenance and installation.

Abstract: A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan of the vacuum cleaner is configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface. A controller of the vacuum cleaner provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value.

Abstract: A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan of the vacuum cleaner is configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface. A controller of the vacuum cleaner provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value.

Abstract: A cleaning apparatus includes a base. A bracket is attached to the base. Wheels are rotatably attached to the base for wheeling the base across a floor. A cleaning attachment is configured to be attached to the base and moved against the floor to clean the floor as the base is wheeled across the floor. The base is manually pushed by a handle to wheel the base across the floor. The handle is configured to be removably attached to the base by being hooked onto the bracket and then pivoted relative to the bracket into an installed position.

Abstract: A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan is configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface. A controller is configured to provide a notification to a user when the speed of the motor exceeds a threshold value.

Abstract: A base has wheels, including a drive wheel, for wheeling the base over a floor. A nozzle is fixed to the base for a fan in the base to draw air from the floor through the nozzle. A handle is connected to the base for propelling the base by manually applying a force to the handle. A drive assist motor, which is not configured to drive the fan, has an output shaft coupled to the drive wheel. The controller is operative in a driving mode to power the motor to rotate the drive wheel in a direction corresponding to a direction of the force applied to the handle. The controller is operative in a non-driving mode to refrain from powering the motor to rotate the drive wheel.

Abstract: A vacuum cleaning apparatus includes a vacuum cleaner base and a handle configured to be attached to the base. A nozzle is configured for the base to draw air through the nozzle to clean the floor as the nozzle is moved along the floor by a user pushing the base by the handle. A power head assembly includes a power head having a brushroll and an electric motor that drives the brushroll. The assembly further includes a tube structure configured to connect the power head to the base for the base to draw air through the power head and the tube structure to clean the floor as the power head is moved along the floor by a user pushing the tube structure.

Abstract: A vacuum cleaner includes a base having first and second inlet ports and a fan configured to draw air through the inlet ports into the base. A vacuuming head is removably attachable to the base to channel air from a surface into the first inlet port to clean the surface while covering and blocking the second inlet port. An attachment, different than the head, is removably attachable to the base to channel air into the second inlet port.

Abstract: System(s) and method(s) are provided for assembling and utilizing parabolic reflectors in a solar concentrator. Parabolic reflectors assembly starts with a low-cost, flat reflective material that is bent into a parabolic or through shape via a set of support ribs that are affixed in a support beam. The parabolic reflectors are mounted on a support frame in various panels or arrays to form a parabolic solar concentrator. Each parabolic reflector focuses light in a line segment pattern. Light beam pattern focused onto a receiver via the parabolic solar concentrator can be optimized. The receiver is attached to the support frame, opposite the parabolic reflector arrays, and includes a photovoltaic (PV) module and a heat harvesting element that enable dual-mode energy conversion operation. To increase performance of the parabolic solar concentrator, the PV module can be configured to advantageously exploit a light beam pattern optimization regardless irregularities in the pattern.

Abstract: Systems and methods that regulate (e.g., in real time) heat dissipation from solar concentrators. A heat regulating assembly removes heat from the PV cells and other hot regions, to maintain the temperature gradient within predetermined levels. A control component can regulate (e.g., automatically) operation of valves (which the cooling medium flows through) based on sensor data (e.g., measurement of temperature, pressure, flow rate, velocity of the cooling medium, and the like throughout the system.

Abstract: Provided is a solar collector assembly that can be manufactured, assembled, and maintained efficiently. A number of arrays that include one or more reflective material formed in a parabolic shape can be attached to a backbone. The backbone is attached to a polar support that is positioned at or near the center of gravity for the solar collector assembly. The polar support at or near the center of gravity allows the entire assembly to be tilted, rotated and/or lowered for various purposes (e.g., service, maintenance, safety). The solar collector assembly can be transported as modular units and/or in a partially assembled state.

Abstract: Plumbing supply boxes may be made of a thermoset plastic material that will not melt or permit the boxes to collapse inside a wall if subjected to flames or high temperatures resulting from a fire. If the thermoset plastic boxes have a drain opening, a thermoplastic tubular drain adaptor may be connected thereto that can be solvent welded. Relatively small intumescent pads may be installed in close proximity to the drain opening which, if subjected to flames or high temperature caused by a fire, will expand and form an insulating char that seals off the drain opening. The boxes may be slidable in opposite directions along adjustable support brackets to permit the boxes to be mounted in any desired position in stud bays having different spacings between the stud walls for ease of alignment of one or more openings in the box with in-wall plumbing.

Abstract: A solar collector can be rotated and tilted about a polar mount. The solar collector can be designed such that the center of gravity of the collector is aligned with the axis of the polar mount facilitating the use of smaller positioning devices. The collector can be placed in a position to prevent damage by inclement weather and allow easy access for maintenance and installation.

Abstract: Pipe clamps may include at least two laterally spaced pipe retaining recesses extending through the body member of the pipe clamps between opposite sides. At one end of the body member is a mounting flange for attaching the pipe clamps to a support structure. Additional pipe clamps having at least one pipe retaining recess may be selectively attached to the other end of the pipe clamps to expand the pipe clamps for selectively securing additional pipes off a support structure.

Abstract: A vacuum cleaning apparatus includes a vacuum cleaner base and a handle configured to be attached to the base. A nozzle is configured for the base to draw air through the nozzle to clean the floor as the nozzle is moved along the floor by a user pushing the base by the handle. A power head assembly includes a power head having a brushroll and an electric motor that drives the brushroll. The assembly further includes a tube structure configured to connect the power head to the base for the base to draw air through the power head and the tube structure to clean the floor as the power head is moved along the floor by a user pushing the tube structure.

Abstract: A cleaning apparatus includes a base. A bracket is attached to the base. Wheels are rotatably attached to the base for wheeling the base across a floor. A cleaning attachment is configured to be attached to the base and moved against the floor to clean the floor as the base is wheeled across the floor. The base is manually pushed by a handle to wheel the base across the floor. The handle is configured to be removably attached to the base by being hooked onto the bracket and then pivoted relative to the bracket into an installed position.