Abstract: An interactive artificial intelligence language learning system including an audio receiver, a data storage device comprising a database that stores a plurality of terminology in a first language and a corresponding plurality of terminology in a second language, and a processor that learns to generate a message to a term received by the audio receiver from a first user, the message based upon a statistical probability analysis comparing the received term with the stored plurality of terminology in the first language and the plurality of terminology in the second language.

Abstract: A battery cap to be pressed onto the battery terminal and battery clamp of an automobile when acid corrosion on the terminal and clamp has interrupted electrical contact due to the buildup of corrosion products, to restore electrical conduction. Within the cap there is an electrically-conducting metal wire pad adhering to its top which makes electrical contact with the battery terminal post and the battery clamp. Optionally, a wire brush may be mounted on the cap to enable the user to brush corrosion products from the battery post and clamp before placement of the cap thereon.

Abstract: An apron that may be worn by the driver of a vehicle protects his clothing from spilled food or beverage, or falling cigarette or cigar ashes, while he is eating and/or smoking as he is driving. The apron can be put on and taken off with one hand making a single connection. It comprises a torso panel and a lap panel, the former removably connected to a neck strap. The lap panel covers the thighs and knees. The sides of the lap panel are stiffened by weights maintaining the lap panel flat on the thighs and preventing it from creeping up over the knees despite the movement of the driver's legs as he operates the pedals of the vehicle. The apron is made of water-repellent, moisture-breathing, fire retardant fabric.

Abstract: An optical communication system is disclosed wherein a multiplicity of stations in a linear, random, or grid arrangement are coupled in a party-line type network in which optical signals originated by a master or responding station are relayed from station to station. Coupling between stations may be accomplished by means of optical lenses, the focal regions of which are coupled to electronic equipments that may be remotely located therefrom. This electronic equipment detects received optical signals, regenerates and retransmits these received optical signals, and originates a responding optical signal to the master station when the received optical signal is addressed to the receiving station.