Abstract: A vacuum cleaner includes a canister, a power head connected to a top of the canister, an inlet defined by one of the canister and the power head, an outlet defined by one of the canister and the power head, and a pre-filter bag disposed within the canister and fluidly connected between the inlet and the outlet. The power head includes an impeller assembly operable to generate airflow through the canister from the inlet to the outlet. The pre-filter bag includes an inlet port connected to the inlet, a radial inner wall, and a radial outer wall. The radial inner wall and the radial outer wall at least partially define an internal cavity and extend circumferentially about a central axis of the pre-filter bag such that the internal cavity forms a continuous, closed loop.

Abstract: An apparatus and method for monitoring the productivity of a portable machine are provided. The method includes receiving motion data for at least one component of the portable machine from a multi-axis accelerometer, receiving position data for the at least one component from a process parameter sensor communicatively coupled to the at least one component, and determining, based on the received motion data and the received position data that the at least one component is oriented in a predetermined position for productive operation. The method also includes determining an area of productive operation using at least one physical dimension of the at least one component and the received motion data when the at least one component is oriented in the predetermined position for productive operation and incrementing a total area counter based on the determination.

Abstract: An apparatus and method for monitoring the productivity of a portable machine are provided. The method includes receiving motion data for at least one component of the portable machine from a multi-axis accelerometer, receiving position data for the at least one component from a process parameter sensor communicatively coupled to the at least one component, and determining, based on the received motion data and the received position data that the at least one component is oriented in a predetermined position for productive operation. The method also includes determining an area of productive operation using at least one physical dimension of the at least one component and the received motion data when the at least one component is oriented in the predetermined position for productive operation and incrementing a total area counter based on the determination.

Abstract: A vacuum cleaner includes a canister, a power head connected to a top of the canister, an inlet defined by one of the canister and the power head, an outlet defined by one of the canister and the power head, and a pre-filter bag disposed within the canister and fluidly connected between the inlet and the outlet. The power head includes an impeller assembly operable to generate airflow through the canister from the inlet to the outlet. The pre-filter bag includes an inlet port connected to the inlet, a radial inner wall, and a radial outer wall. The radial inner wall and the radial outer wall at least partially define an internal cavity and extend circumferentially about a central axis of the pre-filter bag such that the internal cavity forms a continuous, closed loop.

Abstract: An apparatus and method for monitoring the productivity of a portable machine are provided. The method includes receiving motion data for at least one component of the portable machine from a multi-axis accelerometer, receiving position data for the at least one component from a process parameter sensor communicatively coupled to the at least one component, and determining, based on the received motion data and the received position data that the at least one component is oriented in a predetermined position for productive operation. The method also includes determining an area of productive operation using at least one physical dimension of the at least one component and the received motion data when the at least one component is oriented in the predetermined position for productive operation and incrementing a total area counter based on the determination.

Abstract: An apparatus and method for monitoring the productivity of a portable machine are provided. The method includes receiving motion data for at least one component of the portable machine from a multi-axis accelerometer, receiving position data for the at least one component from a process parameter sensor communicatively coupled to the at least one component, and determining, based on the received motion data and the received position data that the at least one component is oriented in a predetermined position for productive operation. The method also includes determining an area of productive operation using at least one physical dimension of the at least one component and the received motion data when the at least one component is oriented in the predetermined position for productive operation and incrementing a total area counter based on the determination.

Abstract: A well pump assembly has a number modules, including a pump and a motor, secured together. Each of the modules has a housing, and at least one of the modules has a neck of reduced diameter relative to the housing. A clamp is secured around the neck. The clamp has a dovetail groove extending around and within the outer surface of the clamp. An accessory member protrudes radially outward from the outer surface of the clamp and has an inner portion located in the groove. A threaded fastener secures the accessory member to the clamp. The accessory member is slidable along the groove to a selected orientation prior to tightening the fastener.

Abstract: A floor cleaning machine has a housing and a movable hood that covers over vacuum and liquid hoses of the machine that are visible in prior art floor cleaning machines. The vacuum and liquid hoses are each pivotally connected to a wall of the machine housing and are also pivotally connected to a transparent dome provided on the hood. These connections reduce stresses on the hoses when the hood is moved and allow the dome to pivot relative to the hood. The floor cleaning machine also has a pair of slit orifices that eject fan spray patterns of cleaning liquid that are non-coplanar and do not intersect each other. Furthermore, the floor cleaning machine has an oscillating brush assembly that includes a brush that is replaceable without using tools. The brush height can be adjusted via an adjustment member provided on the oscillating portion of the assembly.

Abstract: A floor cleaning machine has a housing and a movable hood that covers over vacuum and liquid hoses of the machine that are visible in prior art floor cleaning machines. The vacuum and liquid hoses are each pivotally connected to a wall of the machine housing and are also pivotally connected to a transparent dome provided on the hood. These connections reduce stresses on the hoses when the hood is moved and allow the dome to pivot relative to the hood. The floor cleaning machine also has a pair of slit orifices that eject fan spray patterns of cleaning liquid that are non-coplanar and do not intersect each other. Furthermore, the floor cleaning machine has an oscillating brush assembly that includes a brush that is replaceable without using tools. The brush height can be adjusted via an adjustment member provided on the oscillating portion of the assembly.

Abstract: An electrical submersible pump assembly has modules including a pump, a motor, and a seal section. A threaded connection between at least two of the modules has a first adapter and a second adapter. A collar rotatably carried and axially movable on one of the adapters is in threaded engagement with threads of the other adapter when the threaded connection is made up. First adapter lugs are spaced circumferentially apart from each other around the first adapter. Second adapter slots are spaced circumferentially apart from each other around the second adapter. The lugs slide into the slots while the adapters are brought together. Each of the lugs and each of the slots have side edges that are parallel with the axis. The side edges of the lugs abut the side edges of the slots to prevent rotation of the first and second adapters relative to each other.

Abstract: A well pump assembly has a number modules, including a pump and a motor, secured together. Each of the modules has a housing, and at least one of the modules has a neck of reduced diameter relative to the housing. A clamp is secured around the neck. The clamp has a dovetail groove extending around and within the outer surface of the clamp. An accessary member protrudes radially outward from the outer surface of the clamp and has an inner portion located in the groove. A threaded fastener secures the accessary member to the clamp. The accessary member is slidable along the groove to a selected orientation prior to tightening the fastener.

Abstract: An electrical generating system for aircraft with one or more engines includes a plurality of generators associated with the engines so as to produce respective AC outputs. The frequencies of these outputs can differ from each other, as a result of differing engine speeds and/or deliberate design, but they are to be connected to a common bus to avoid redundancy of wiring. One or more converters are present between the generators and the bus for adjusting the output frequency of the generators to provide an AC output voltage at a common bus frequency. The system includes a control system for setting the AC bus frequency in such a way that it can vary with time. The bus frequency may follow the natural frequency of the engine, and only small converters are needed to make the already approximately equal generator frequencies identical, so that they can all feed the common bus.

Abstract: A chimeric ErbB ligand binding molecule is disclosed along with its pharmaceutically acceptable salt forms. The molecule is a protein that as part of its sequence includes the sequence of SEQ ID NOS: 1, 2, or 3. The molecule can be fused to an IgGFc and especially IgGFc containing cysteine to serine changes in the hinge region. For example, the fusion can be to IgG 1Fc DNA sequences that encode the binding molecules are also contemplated as well as vectors containing such DNA sequences and hosts that contain such vectors. Pharmaceutical compositions are contemplated that contain the binding molecule along with a pharmaceutically acceptable excipient.

Abstract: A floor cleaning machine has a housing and a movable hood that covers over vacuum and liquid hoses of the machine that are visible in prior art floor cleaning machines. The vacuum and liquid hoses are each pivotally connected to a wall of the machine housing and are also pivotally connected to a transparent dome provided on the hood. These connections reduce stresses on the hoses when the hood is moved and allow the dome to pivot relative to the hood. The floor cleaning machine also has a pair of slit orifices that eject fan spray patterns of cleaning liquid that are non-coplanar and do not intersect each other. Furthermore, the floor cleaning machine has an oscillating brush assembly that includes a brush that is replaceable without using tools. The brush height can be adjusted via an adjustment member provided on the oscillating portion of the assembly.

Abstract: A floor cleaning machine has a housing and a movable hood that covers over vacuum and liquid hoses of the machine that are visible in prior art floor cleaning machines. The vacuum and liquid hoses are each pivotally connected to a wall of the machine housing and are also pivotally connected to a transparent dome provided on the hood. These connections reduce stresses on the hoses when the hood is moved and allow the dome to pivot relative to the hood. The floor cleaning machine also has a pair of slit orifices that eject fan spray patterns of cleaning liquid that are non-coplanar and do not intersect each other. Furthermore, the floor cleaning machine has an oscillating brush assembly that includes a brush that is replaceable without using tools. The brush height can be adjusted via an adjustment member provided on the oscillating portion of the assembly.

Abstract: A floor cleaning machine has a housing and a movable hood that covers over vacuum and liquid hoses of the machine that are visible in prior art floor cleaning machines. The vacuum and liquid hoses are each pivotally connected to a wall of the machine housing and are also pivotally connected to a transparent dome provided on the hood. These connections reduce stresses on the hoses when the hood is moved and allow the dome to pivot relative to the hood. The floor cleaning machine also has a pair of slit orifices that eject fan spray patterns of cleaning liquid that are non-coplanar and do not intersect each other. Furthermore, the floor cleaning machine has an oscillating brush assembly that includes a brush that is replaceable without using tools. The brush height can be adjusted via an adjustment member provided on the oscillating portion of the assembly.

Abstract: A floor cleaning machine has a housing and a movable hood that covers over vacuum and liquid hoses of the machine that are visible in prior art floor cleaning machines. The vacuum and liquid hoses are each pivotally connected to a wall of the machine housing and are also pivotally connected to a transparent dome provided on the hood. These connections reduce stresses on the hoses when the hood is moved and allow the dome to pivot relative to the hood. The floor cleaning machine also has a pair of slit orifices that eject fan spray patterns of cleaning liquid that are non-coplanar and do not intersect each other. Furthermore, the floor cleaning machine has an oscillating brush assembly that includes a brush that is replaceable without using tools. The brush height can be adjusted via an adjustment member provided on the oscillating portion of the assembly.

Abstract: A protection system is provided for an electrical power network. The system has one or more circuit breaker arrangements which on activation isolate electrical faults within the network, and one or more fault detectors. The or each fault detector measures an inductance of a respective section of the network. The system is configured to activate one or more of the circuit breaker arrangements in response to measured inductances which are indicative of a fault.

Abstract: This invention relates to a method of controlling torque oscillations in a mechanical drive train of an electrical generation system which provides electrical power to an isolated electrical network, the method including the steps of: a. monitoring for changes in the electrical condition of the electrical network; b. determining whether a change in the electrical condition of the network falls within a predetermined range; c. adjusting the power in the network using an auxiliary power source when the electrical condition of the network falls within the predetermined range so as reduce or substantially prevent the build up of torque oscillations in the mechanical drive train.