Abstract: A balance piston seal assembly for a balance piston of a compressor is provided. The balance piston seal assembly may include a balance piston seal configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween. The balance piston seal assembly may also include a plurality of heaters in thermal communication with the balance piston seal and configured to heat and thermally expand the balance piston seal and thereby increase a radial length of the radial clearance.

Abstract: A compressor may include a casing defining a discharge cavity and a seal cavity. A rotary shaft may be disposed in the casing, and a shaft seal assembly may be disposed in the seal cavity and about the rotary shaft. An impeller may be coupled with and configured to be driven by the rotary shaft. A balance piston may be integral with the impeller and may define the discharge cavity and the seal cavity. A balance piston seal may be disposed about the balance piston such that the balance piston seal and the balance piston define a radial clearance therebetween. The radial clearance may be configured to provide fluid communication from the impeller to the discharge cavity. A heat shield may be disposed in the discharge cavity, and may be configured to prevent the conduction of heat from the discharge cavity to the seal cavity via the casing.

Abstract: Power distribution apparatus with input and output power sensing and a method of use. A power distribution unit includes a sensor that senses power parameters of power outputs and a power input, a processor, and a communication circuit. A power management system includes a power manager, a user interface, and a plurality of power distribution units that may be located in one or more equipment cabinets and data centers. The system may compute apparent power, RMS power, power factor, energy usage over time, power usage history, or environmental history for any or all of the power distribution units. The system may identify an under-utilized server connected to one of the power distribution units and initiate a shut-down of that server.

Abstract: A balance piston seal assembly for a balance piston of a compressor is provided. The balance piston seal assembly may include a balance piston seal configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween. The balance piston seal assembly may also include a plurality of heaters in thermal communication with the balance piston seal and configured to heat and thermally expand the balance piston seal and thereby increase a radial length of the radial clearance.

Abstract: A compressor may include a casing defining a discharge cavity and a seal cavity. A rotary shaft may be disposed in the casing, and a shaft seal assembly may be disposed in the seal cavity and about the rotary shaft. An impeller may be coupled with and configured to be driven by the rotary shaft. A balance piston may be integral with the impeller and may define the discharge cavity and the seal cavity. A balance piston seal may be disposed about the balance piston such that the balance piston seal and the balance piston define a radial clearance therebetween. The radial clearance may be configured to provide fluid communication from the impeller to the discharge cavity. A heat shield may be disposed in the discharge cavity, and may be configured to prevent the conduction of heat from the discharge cavity to the seal cavity via the casing.

Abstract: A modular cart for transporting and securing femtosecond lasers and other highly sensitive equipment to medical facilities by truck transit and within medical facilities by rolling the modular cart is disclosed. The modular cart includes a cart base member with rollers, a sub plate attached to the top portion of the cart base member, a control box attached to a top end portion of the cart base member, and an adaptable interface plate attached thereto the top portion of the sub plate for selectively receiving and securing highly sensitive equipment. The adaptable interface plate may be modified by size, shape, and receiving means in order to receive and secure various specific types of highly sensitive equipment. Different adaptable interface plates may be used for receiving and securing different highly sensitive equipment.

Abstract: A cart for transporting and securing ophthalmological lasers and other highly sensitive equipment to medical facilities by a vehicle, and within medical facilities by rolling the cart is disclosed. The cart includes a cart base member with a mounting plate attached to the top portion of the cart base member, a locking mechanism attached to the mounting plate, and a circular plate, rotary swivel bearing and roller plate contained between the cart base member and the mounting plate. The circular plate allows the mounting plate and the equipment mounted thereon to rotate when the locking mechanism is in its unlatched position. This rotation allows the equipment, which may include asymmetrical equipment such as an overhanging arm associated therewith, to rotate enough to allow the otherwise asymmetrical equipment to fit through a doorway and accordingly be transported from one room in a clinic or other surgical site to another room.

Abstract: A cart for transporting and securing ophthalmological lasers and other highly sensitive equipment to medical facilities by a vehicle such as a truck, and within medical facilities by rolling the cart is disclosed. The cart includes a cart base member with a mounting plate attached to the top portion of the cart base member, a locking mechanism attached to the mounting plate, and a circular plate, rotary swivel bearing and roller plate contained between the cart base member and the mounting plate. The circular plate allows the mounting plate and the equipment mounted thereon to rotate when the locking mechanism is in its unlatched position. This rotation allows the equipment, which may include asymmetrical equipment such as an overhanging arm associated therewith, to rotate enough to allow the otherwise asymmetrical equipment to fit through a doorway and accordingly be transported from one room in a clinic or other surgical site to another room.

Abstract: A modular cart for transporting and securing femtosecond lasers and other highly sensitive equipment to medical facilities by truck transit and within medical facilities by rolling the modular cart is disclosed. The modular cart includes a cart base member with rollers, a sub plate attached to the top portion of the cart base member, a control box attached to a top end portion of the cart base member, and an adaptable interface plate attached thereto the top portion of the sub plate for selectively receiving and securing highly sensitive equipment. The adaptable interface plate may be modified by size, shape, and receiving means in order to receive and secure various specific types of highly sensitive equipment. Different adaptable interface plates may be used for receiving and securing different highly sensitive equipment.

Abstract: Power distribution apparatus with input and output power sensing and a method of use. A power distribution unit includes a sensor that senses power parameters of power outputs and a power input, a processor, and a communication circuit. A power management system includes a power manager, a user interface, and a plurality of power distribution units that may be located in one or more equipment cabinets and data centers. The system may compute apparent power, RMS power, power factor, energy usage over time, power usage history, or environmental history for any or all of the power distribution units. The system may identify an under-utilized server connected to one of the power distribution units and initiate a shut-down of that server.

Abstract: Power distribution apparatus with input and output power sensing and a method of use. A power distribution unit includes a sensor that senses power parameters of power outputs and a power input, a processor, and a communication circuit. A power management system includes a power manager, a user interface, and a plurality of power distribution units that may be located in one or more equipment cabinets and data centers. The system may compute apparent power, RMS power, power factor, energy usage over time, power usage history, or environmental history for any or all of the power distribution units. The system may identify an under-utilized server connected to one of the power distribution units and initiate a shut-down of that server.

Abstract: The present invention relates to an exposure device for living cell cultures, the device having a medium chamber common to a plurality of cell culture chambers and medium directing means. The medium chamber, cell culture chambers and the medium directing means may be arranged so as to provide substantially contemporaneous medium exchange at the cell culture chambers.

Abstract: Power distribution apparatus with input and output power sensing and a method of use. A power distribution unit includes a sensor that senses power parameters of power outputs and a power input, a processor, and a communication circuit. A power management system includes a power manager, a user interface, and a plurality of power distribution units that may be located in one or more equipment cabinets and data centers. The system may compute apparent power, RMS power, power factor, energy usage over time, power usage history, or environmental history for any or all of the power distribution units. The system may identify an under-utilized server connected to one of the power distribution units and initiate a shut-down of that server.

Abstract: A radio frequency identification (RFID) system having the capacity to detect conditions of alignment, wherein the system may be used with hand-held, fixed-in-place, stationary, and permanently mounted apparatus. The system includes an RF interrogator configured for use with dental x-ray, medical imaging, film, and digital radiography apparatus, and may include a multiplicity of RF transponders or interrogators. An RF interrogator, an RF transponder, and an x-ray sensitive imaging device, and its holder are configured to be critically aligned to a dental x-ray machine head apparatus, rendering repeat imaging unnecessary. The x-ray emitter may be further configured to automatically obtain a desired x-ray image or configured so that the device cannot activate and provide a radiograph until alignment with the transponder and associated x-ray sensitive imaging device has occurred.

Abstract: A radio frequency identification (RFID) system having the capacity to detect conditions of alignment, wherein the system may be used with hand-held, fixed-in-place, stationary, and permanently mounted apparatus. The system includes an RF interrogator configured for use with dental x-ray, medical imaging, film, and digital radiography apparatus, and may include a multiplicity of RF transponders or interrogators. An RF interrogator, an RF transponder, and an x-ray sensitive imaging device, and its holder are configured to be critically aligned to a dental x-ray machine head apparatus, rendering repeat imaging unnecessary. The x-ray emitter may be further configured to automatically obtain a desired x-ray image or configured so that the device cannot activate and provide a radiograph until alignment with the transponder and associated x-ray sensitive imaging device has occurred.

Abstract: A radio frequency identification (RFID) system having the capacity to detect conditions of alignment, wherein the system may be used with hand-held, fixed-in-place, stationary, and permanently mounted apparatus. The system includes an RF interrogator configured for use with dental x-ray, medical imaging, film, and digital radiography apparatus, and may include a multiplicity of RF transponders or interrogators. An RF interrogator, an RF transponder, and an x-ray sensitive imaging device, and its holder are configured to be critically aligned to a dental x-ray machine head apparatus, rendering repeat imaging unnecessary. The x-ray emitter may be further configured to automatically obtain a desired x-ray image or configured so that the device cannot activate and provide a radiograph until alignment with the transponder and associated x-ray sensitive imaging device has occurred.

Abstract: A radio frequency identification (RFID) system having the capacity to detect the parameter of alignment, wherein the system may be used with hand-held, fixed-in-place, stationary and permanently mounted apparatus. The system includes an RF transponder configured for use with dental x-ray, medical imaging and digital radiography apparatus The system may include a multiplicity of RF transponder carrier transmit/data receive coils, each resonant to the same or differing frequencies. An RF tag, an RF transponder and an x-ray film holder are configured to be critically aligned to a dental x-ray machine head apparatus, rendering repeat imaging unnecessary. The x-ray head apparatus may be further configured to automatically obtain a desired x-ray image or configured so that the device cannot activate and provide a radiograph until alignment to an RF tag device has occurred.

Abstract: A radio frequency identification (RFID) system having the capacity to detect various geometric parameters of alignment. The described system is configured for use with dental x-ray, medical imaging and treatment, and customary and digital radiography apparatus, but is not restricted to such apparatus or applications. The system may include a multiplicity of RF transponders, RF tags, and RF readers, wherein each RF tag may include one or more carrier receive/data transmit coils and wherein each RF reader may include one or more carrier transmit/data receive coils, and wherein each coil of an RF tag or RF reader may resonate at one or more, and/or, at the same or differing frequencies. An RF tag located about an x-ray sensitive film or device, and an RF reader located about a dental x-ray machine or apparatus, are configured to be critically aligned, one to the other, rendering repeat imaging unnecessary.

Abstract: A radio frequency identification (RFID) system having the capacity to detect the parameter of alignment, wherein the system may be used with hand-held, fixed-in-place, stationary and permanently mounted apparatus. The system includes an RF transponder configured for use with dental x-ray, medical imaging and digital radiography apparatus The system may include a multiplicity of RF transponder carrier transmit/data receive coils, each resonant to the same or differing frequencies. An RF tag, an RF transponder and an x-ray film holder are configured to be critically aligned to a dental x-ray machine head apparatus, rendering repeat imaging unnecessary. The x-ray head apparatus may be further configured to automatically obtain a desired x-ray image or configured so that the device cannot activate and provide a radiograph until alignment to an RF tag device has occurred.