摘要:
An automotive vehicle washing system includes a frame comprising a bridge member end opposed and support sections mounted for linear reciprocating movement on spaced apart support rails. Pivoting washing nozzle support arms are mounted on the bridge section and are interconnected by a drive motor and drive pulleys to move in opposite directions to wash the sides and opposite ends of a vehicle. Each arm includes movable arm sections supporting spaced apart nozzle assemblies which may move toward each other or away from each other to size a vehicle according to its width. Each arm includes opposed elongated beam members which also provide fluid conducting passages for conducting washing fluids to the nozzle assemblies. Certain ones of the nozzle assemblies are drivenly connected to an oscillating servomotor. The servomotor is also used to position the pivoting arm sections through a lost motion coupling and a gear drive unit.
摘要:
A wireless electromagnetic tracking system using a nonlinear passive transponder is provided. The transponder employs a coil connected in parallel with a diode. The transponder emits a response signal when an excitation signal is incident upon the coil of the transponder. Inclusion of the diode in the transponder circuit introduces nonlinear characteristics into the waveform of the response signal emitted by the transponder. The nonlinear characteristics can be varied by changing the capacitance level of the transponder circuit. The nonlinear characteristics of the response signal can be used to discern the response signal from the excitation signal when both signals are received at a receiver. The nonlinear characteristics can also be utilized in a system of encoding data that is to be transmitted from a transponder to a receiver.
摘要:
A facing element 20 is formed from cast concrete and provided with a connecting member 23 located in a recess 22. The element is particularly appropriate for use in combination with flexible reinforcing strips. The connecting member may be a simple molded cylinder of plastics or alternatively it may be partly or wholly formed of concrete and be cast integrally with the rest of the facing element. The casting may be facilitated by means of a plastic shell which is set into the concrete and defines the connecting member and recess. To strengthen the connecting member, a reinforcing bar passes through its center.
摘要:
In a robotic arrangement an elongate telescope(10) is provided adapted to be inserted into a patient(6). A drive arm(8) is connected to the telescope and means(7) are provided to rotate the drive arm about a substantially vertical axis. Drive means are provided associated with the drive arm(8) to adjust the angle of inclination of the cannula. This may comprise means to adjust the angle of inclination of the drive arm(8) itself.
摘要:
A brake device comprises a stack of friction plates (6,7) compressible to have a braking effect between an armature (9) and a magnet structure (10,) the structure including a permanent magnet (11) urging the armature towards the magnet structure to effect braking, and an electromagnet (12) energizable to augment the effect of the permanent magnet, or to oppose it either partially or completely so as to release the braking effect.
摘要:
Methods and compositions are hereby disclosed for reducing the numbers of E. coli O157:H7, Salmonella or other pathogens in an animal. The methods include administering to the animal a lactic acid producing bacterium at a relatively low dosage in combination with a lactate utilizing bacterium, followed by administration of the lactic acid producing bacterium at a relatively high dosage. The disclosed methods help achieve pre-harvest food safety and enhance feed performance while keeping the total cost relatively low. The preferred lactic acid producing bacterium is Lactobacillus acidophilus/animalis and the preferred lactate utilizing bacterium is Propionibacterium freudenreichii.
摘要:
A control system for a fuel-fired appliance and methods of operating are disclosed. When a failed ignition of a burner is detected, the control system is configured to enter a soft lockout state if the voltage level of a burner of the fuel-fired appliance is low during the failed ignition and a hard lockout state if the voltage level of the burner is not low during the failed ignition. In some cases, if a period of time has elapsed and/or the voltage level of the burner has increased after the control system enters the soft lockout state, the control system may be configured to initiate one or more subsequent ignition trials. In some cases, if the one or more subsequent ignition trials fail, the control system may be configured to then enter the hard lockout state.
摘要:
A damper control system having energy efficient mechanisms. The system may use a heat-to-electric power converter such as a thermopile. Heat may come from a pilot light used for igniting a flame for an appliance. The system may store electric energy in a storage module which could be a sufficiently large capacitor. The system may monitor the position of a damper in a vent or the like and provide start and stop movements of the damper using minimal energy. One way that the system may control electrical energy to a damper motor or another electrical mover of the damper is to use pulse width modulated signals.
摘要:
A method for controlling a boiler includes firing a boiler, and monitoring a temperature deviation between a boiler temperature and a heating temperature profile over time. If the temperature deviation exceeds an allowable deviation, the boiler is shut off.