Abstract: A new quickly replaceable electrode assembly for electroporation that also provides the functions of a pipette, capable of sucking up samples; applying extremely high electric field strength to samples at lower, safer voltages due to close spacing of the electrode plates; and expelling samples quickly and completely; along with a quick-connect receptacle for the electrode assembly. New methods are detailed for construction of electrode assemblies, providing electric current, monitoring characteristics of electric pulses delivered to samples, and space saving hand held units using low voltage D.C., A.C. line, and piezoelectric power supplies, with peak current delivered indicators are disclosed.

Abstract: A system for braking a wheeled vehicle when it is attempted to be moved outside of a defined perimeter wherein at least one wheel of the vehicle is mechanically coupled to a shaft carrying means to create upon rotation of the shaft, through electromagnetic action an electric current at a pair of terminals; circuit means, responsive to a predetermined signal, to short said terminals, thereby creating a counter electromagnetic force to inhibit rotation of said shaft and wheel coupled thereto to brake the latter; means to generate said predetermined signal; and means to radiate said signal locally along said perimeter.

Abstract: A completely self contained photographic vending unit included within a weatherized containment automatically takes photographs of users in response to user inputs. The photographs are taken on a self-developing film supplied in cartridges. A film loading mechanism supplies and positions fresh cartridges into a camera body by conveying the fresh film cartridge from a storage unit to the camera location and then elevating the film cartridge into the camera through the bottom of the camera. The camera is aimed by tilting the entire camera assembly including the camera and film delivery mechanism as an integral unit. Frames or cards are selectively dispensed from one of a plurality of dispensing units through a delivery chute to be combined with the photograph to provide a personalized and customized greeting card, postcard or framed photograph. The entire vending unit operates automatically and unattended and may be used in an exterior location without an enclosing photographic booth.

Abstract: An automatic photographic system including a housing, a camera having self developing film mounted within the housing, and electrical circuits within the housing providing visual and/or audible customer use instructions, and wherein the housing is adapted for mounting on a single stand-alone support which includes provision for displaying available accessory items such as photographic holders or frames.