Abstract: A safety device for connection between a tongue of a trailer and a hitch of a vehicle includes an elongate arm and first and second ball joint sections located at opposite ends of the elongate arm. Each ball joint section includes a bearing cage formed in the elongate arm and a spherical bearing member positioned within the bearing cage. One of the spherical bearing member connects to the trailer tongue and the other spherical bearing member connects to the hitch. In this manner, relative movement between the trailer tongue and hitch causes rotation of the first and second spherical bearing members during towing along uneven surfaces to maintain a safety connection between the trailer tongue and hitch.

Abstract: A method and system for asynchronously transporting narrowband and broadband transmissions over a link includes providing at least one host terminal or at least one network unit for receiving and transmitting communications over a transmission line. Narrowband transmissions are converted to and from composite asynchronous transfer mode (ATM) cells by separating data and signaling of each channel into separate byte positions in the composite ATM cells. The composite asynchronous transfer mode (ATM) cells are transferred over the transmission link. The composite asynchronous transfer mode (ATM) cells include both narrowband and broadband composite cells such that an entire bandwith of the transmission line is available for both narrowband and broadband transmissions.