Class / Patent application number | Description | Number of patent applications / Date published |
340641000 | Signalling light element | 6 |
20090021383 | METHOD FOR REDUNDANT CONTROL OF SERVICE INDICATOR LEDS - A lighting circuit for energizing an indicating light on a device coupled to a host, the circuit including a flasher circuit of the host; a fault detection circuit of the device; and an XNOR gate for receiving input from the flasher circuit and the fault detection circuit wherein the lighting circuit is adapted for energizing the indicating light and causing the indicating light to flash in the presence of a fault signal from the fault detection circuit | 01-22-2009 |
20090096624 | Vehicle seatbelt usage external indicator system - A seat belt usage indicator having a seat occupied sensor and a seat belt reel sensor with an externally mounted indicator light. The seat belt usage indicator system has a sensor positioned in each seat and a seat belt reel sensor corresponding to each seat such that the external indicator light can only be deactivated when the seat belt corresponding to an occupied seat is engaged. To ensure reliability, a plurality of surge absorbing devices which protect the circuitry from any voltage spikes that may occur due to static electricity or other disturbances in the vehicle's electrical system, are provided. Also provided are a plurality of resistors which prevent damage to the device by limiting current. In this manner, a reliable and tamper-resistant seat belt usage indicator system is provided. | 04-16-2009 |
20140266749 | PRINTED LIGHT-EMITTING DIODE CIRCUIT FOR ITEM VALIDATION - Ink-printed electric circuits including light-emitting diodes (LEDs) for validation of items is disclosed. In one embodiment, the flexible circuit includes a pliant substrate, and an ink-printed electric circuit. The ink-printed electric circuit comprises at least one ink-printed LED printed on the pliant substrate. The ink-printed electric circuit is configured to couple to a power source, determine an open circuit condition, and cause the at least one LED to transition from a first state to a second state upon determining the open circuit condition. | 09-18-2014 |
20160005294 | MONITORING SYSTEM AND METHOD - System and method for monitoring electrical devices such as luminaires, including ballast and/or battery powered lighting components, for variety of fault conditions from central location utilize monitoring unit that interfaces with host lighting fixture or luminaire to allow status of host to be remotely monitored. Monitoring unit can interface with host in fully galvanically isolated manner using current transformers allowing host lighting fixture to be monitored in the least intrusive manner. Monitoring unit can be seamlessly fitted to new luminaires or existing luminaires. Current transformer interface has minimal effect on host ballast functionality and operation. Monitoring system may include a plurality of monitoring units multi-dropped on a single field bus network or in a power line communication. Power for monitoring unit can be derived from field bus network or power line. Operating parameters and addressing information of monitoring unit may be configured via interface using laptop or PC. | 01-07-2016 |
20160117908 | SYSTEMS AND METHODS FOR COMMUNICATING DATA VIA LIGHT PULSES - A method for communicating data from a device to an object external to the device includes encoding one or more operating parameters of the device into a data sequence, and activating a light source of the device to generate a series of light pulses to represent the data sequence to communicate the encoded one or more operating parameters to an object external to the device. Another method includes capturing with a camera a series of light pulses from a light source of a device, and decoding the series of light pulses into data representing one or more operating parameters of the device. Example devices and systems employing the methods are also disclosed. | 04-28-2016 |
340642000 | Plural bulbs or filaments | 1 |
20110037604 | Feedback Circuit for a Display Sign and Method - A feedback circuit for a display sign has a number of lights. A resistor is coupled in series with the lights. A voltage measuring circuit is coupled to the resistor. | 02-17-2011 |