Abstract:
A fire hose coupling comprises a body having a first end connected to a fire hose and a second end having threads. The fire hose coupling comprises a recessed portion formed in an outer surface of the body. The recessed portion is shaped to define a visuotactile directional indicator such as an arrow. The recessed portion may include a light-reflecting surface to enhance visibility such as a super reflective metal film, a photo luminescent coating, or a phosfluorescent coating. The recessed directional indicator may be formed in either female or male couplings.
Abstract:
A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor winding passing through primary core assemblies of the primary winding and a secondary winding arranged for connection to the cathode heater. A current monitor is arranged to monitor a current in the primary windings. Signal processing modules are arranged to receive a first input signal from the monitor winding indicative of a voltage across the cathode heater and a second input signal from the current monitor indicative of a current through the cathode heater. The signal processing modules are arranged to output a control signal to the SMPS inverter to control power supplied to the cathode heater dependent on a monitored resistance of, or monitored power supplied to, the cathode heater as determined from the first input signal and the second input signal.
Abstract:
A transformer comprises a primary winding 231; a secondary winding 233; a first electrostatic screen 234 located between the primary winding and the secondary winding and most proximate to the primary winding means; and a second electrostatic screen 235 located between the primary winding and the secondary winding means and most proximate to the secondary winding means. The first electrostatic screen is electrically connectable to a power supply electrically connectable to the primary winding and the second electrostatic screen is electrically connectable to a load electrically connectable to the secondary winding. The invention also includes an inverter system including the transformer.
Abstract:
A magnetron has an anode and a cathode. The cathode includes two parts joined by sleeves of ferrous alloy spaced by a sleeve of insulating material. The ferrous alloy sleeves are adapted to be connected to opposite poles of a power supply for heating the cathode. A high frequency power supply is used to heat the cathode. The ferrous alloy sleeves have a surface coating of conductive material. The currents induced by the magnetic field generated by the high frequency currents of the power supply are largely confined to the conductive coating due to the skin effect, avoiding the heating of and losses in the ferrous alloy itself which would otherwise ensue.
Abstract:
There is provided an improved roof solar panel, embodying an array of photovoltaic cells mounted on conventional modular roof sheathing, that can be readily and easily installed onto a conventional sloped roof and integrated into conventional roof shingles. Such panel includes a shingle mounting surface on a perimeter area of the sheathing, a flash strip mounted inside such shingle mounting surface and, when installed on the roof, a retainer trim for securing shingles mounted on said shingle mounting surface, while mounting to the flash strip and sealing to a perimeter of a rigid transparent protective sheet over the array. The retainer trim also serves to provide means for securing the panel onto roof trusses. Integration with the conventional roof shingling provides, inter alia, an attractive low profile with improved water shedding and wind resistance properties. There is also an intermediate roof solar panel, for installation on a roof so as to provide the aforementioned improved roof solar panel. The invention also relates to a kit comprising, inter alia, said intermediate roof solar panel, and to a method of installing said intermediate roof solar panel.
Abstract:
A transformer comprises a secondary winding including a plurality of coaxially arranged toroidal closed magnetic circuits connected in series within an enclosure and a primary winding comprising a plurality of turns including electrically conducting members passing axially through the toroidal closed magnetic circuits, respective ones of the plurality of electrically conducting members being electrically connected by respective electrically conducting strip lines passing along walls of the enclosure to form the continuous primary winding.
Abstract:
A magnetron has an anode and a cathode. The cathode includes two parts joined by sleeves of ferrous alloy spaced by a sleeve of insulating material. The ferrous alloy sleeves are adapted to be connected to opposite poles of a power supply for heating the cathode. A high frequency power supply is used to heat the cathode. The ferrous alloy sleeves have a surface coating of conductive material. The currents induced by the magnetic field generated by the high frequency currents of the power supply are largely confined to the conductive coating due to the skin effect, avoiding the heating of and losses in the ferrous alloy itself which would otherwise ensue.
Abstract:
A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor winding passing through primary core assemblies of the primary winding and a secondary winding arranged for connection to the cathode heater. A current monitor is arranged to monitor a current in the primary windings. Signal processing modules are arranged to receive a first input signal from the monitor winding indicative of a voltage across the cathode heater and a second input signal from the current monitor indicative of a current through the cathode heater. The signal processing modules are arranged to output a control signal to the SMPS inverter to control power supplied to the cathode heater dependent on a monitored resistance of, or monitored power supplied to, the cathode heater as determined from the first input signal and the second input signal.
Abstract:
A transformer comprises a secondary winding including a plurality of coaxially arranged toroidal closed magnetic circuits connected in series within an enclosure and a primary winding comprising a plurality of turns including electrically conducting members passing axially through the toroidal closed magnetic circuits, respective ones of the plurality of electrically conducting members being electrically connected by respective electrically conducting strip lines passing along walls of the enclosure to form the continuous primary winding.
Abstract:
A bed for use with two adjacent seats separated from each other so that a gap is defined therebetween, which may include adjacent seats within or outside of a vehicle. The bed comprises a body comprising a first end disposed on one of the passenger seats and a second end disposed on the other seat. The body bridges the gap defined between the seats. The bed may further include means for securing the body into a position relative to the seats, and/or means for securing the body about the back of at least one seat.