Abstract: A device for winding strips of photographic film inside a housing. A film-guide slot opens into the housing's approximately cylindrical interior. A film reel rotates freely in the housing interior without a positive drive and demarcates, in conjunction with the inner surface of the housing, a more or less annular film-guide channel. The film-guide slot opens more or less tangentially into the interior channel.

Abstract: A data and television network for digital computer workstations that operate on a local area network (LAN) to exchange data. The network includes a private branch exchange (PBX) having a plurality of television ports for transmitting and receiving television signals, an electronic switch for selectively connecting each television port with any other television port, and a control computer (PC), connected to the LAN and to the switch, for decoding data messages received from a workstation via the LAN and controlling the interconnection of the television ports by the switch in response thereto. A software program, stored in and operable on the computer of each workstation, generates the data messages to be transmitted via the LAN to the control computer of the PBX.

Abstract: A hand-held, self-contained, self-powered, submersible, portable water pump appliance having physical dimensions and weight enabling it to be hand-held and transportable by a person. The appliance can recirculate water in a pool of water, as in a bathtub or spa, and is useful for providing massage and stimulation to the body of a person.