Abstract: A multi-functional underwater device for use by scuba divers for communicating with and tracking the relative direction of one or more other divers. The device is configured to monitor and communicate with multiple other devices simultaneously and includes a transmitter and receiver assembly for transmitting location signals to and receiving location signals from other communication devices on frequencies defined by a communication channel setting for the device. A processor processes signals to determine separation distance between the devices and to compare separation distances to a safety distance. A display assembly indicates communication channel and safety distance for the communication device and indicates when the separation distance is exceeded. The display assembly includes an input portion operable to set the safety distance and/or the communication channel.

Abstract: A stock license plate frame (20) is shown having a customizing logo (38) and trademarks (40). Attachment holes (42, 44, 46, and 48) are provided in the top and bottom cross members (22 and 24). The logo (33) and trademark (40) are mounted on plates (39) having pin 41, 43, 47, and 49) on the back which fit into holes in the frame. Retainer clips (64) pushed onto the pins help retain the logo and trademark on the frame.

Abstract: An accent bar for personalizing a license plate while securing the license plate within the mounting bracket of a vehicle. The accent bar includes an elongate structural member with mounting loops or holes for mounting the accent bar on the top, the bottom, or both portions of the vehicle mounting bracket. The elongate structural member only extends across the top or bottom or both of the license plate and does not extend all around the plate as with frames. An accent or display element is provided in the bar, either integrally or separately with the elongate member, to provide a graphical or textual display. When two accent bars are utilized, the accent or display elements may combine to form a single accent or display feature. The materials, sizes, and shapes of the accent bar and the accent elements may be varied to create numerous vehicle accents and messages.

Abstract: A multi-functional underwater device for use by scuba divers for communicating with and tracking the relative direction of one or more other divers. The device is configured to monitor and communicate with multiple other devices simultaneously and includes a transmitter and receiver assembly for transmitting location signals to and receiving location signals from other communication devices on frequencies defined by a communication channel setting for the device. A processor processes signals to determine separation distance between the devices and to compare separation distances to a safety distance. A display assembly indicates communication channel and safety distance for the communication device and indicates when the separation distance is exceeded. The display assembly includes an input portion operable to set the safety distance and/or the communication channel.

Abstract: A distance is discovered between a first device and a second device. The distance is discovered by any method. One method for discovering the distance is by generating a signal from the first device to the second device and measuring the amplitude of the signal received by the second device then discovering the distance from the measured strength of the signal. A second method for determining the distance is by discovering the location of each device and communicating the location of the first device to the second device where the two locations are compared to realize the difference between the two devices. A third method for determining the distance is by the second device requesting a response from the first device and measuring the time between the request and the receipt of the response. The distance is then discovered from the measured time. However it is discovered, the discovered distance is compared to a preset distance condition.