Abstract: A device for indicating the state of charge of an electrochemical cell or battery includes a regulated-voltage generating circuit having an input connectable to the cell and an output providing a regulated reference voltage, an amplifying circuit having an input connectable to the cell and an output having a predetermined relation to a voltage within a predetermined range applied to the input of the amplifying unit, and a solid state analog display unit having a reference input connected to the output of the regulated-voltage generating circuit and an address input connected to the amplifying circuit. The relation between the address voltage output of the amplifying circuit and the cell voltage input is such that the address voltage corresponds to the state of charge of the cell in the predetermined range of cell voltages and falls within the range of the most negative and most positive values of the reference voltage.

Abstract: The disclosure relates to an analog solid state display device for presenting an analog display of the state of charge and voltage of a battery, typically a rechargeable battery. There is disclosed an apparatus for deriving a signal which is a function of the state of charge of the battery to drive an analog solid state indicating display by such signal. The analog solid state indicating display can comprise an analog liquid crystal display of the voltage and state of charge of a battery to which the display is connected. In addition, there is disclosed a circuit for driving an analog liquid crystal display of the state of charge of the battery with the analog liquid display being disposed within the housing of a tool or appliance which contains the battery. The disclosure also relates to the indication of the state of charge of a battery by an analog liquid crystal display when the battery is under load. The display can comprise an analog bar graph presentation.

Abstract: A display element that can be used in either an analog or a digital liquid crystal display device includes an electrically insulating substrate having a surface with a display region and at least one elongated connection region outside the display region. The one connection region includes a longitudinally extending digital connection section and a longitudinally extending analog connection section.

Abstract: A large screen video display system to display bright video images at high resolution comprises an array of video monitors arranged adjacent each other in a compact matrix, for example, an array of 2.times.2, 3.times.3 or 4.times.4 video monitors. A lenticular optical plate is placed in front of the face plate of each monitor to magnify the video images and project them as a mosaic of images on the back face of a rear projection screen. Circuit means electronically, using digital techniques, divide the original video image into segments, each segment being displayed on a separate monitor, and into sub-segments, for example, 48 rectangular sub-segments, which sub-segments are individually rotated 180.degree. about the image axis on each monitor. A viewer looking at the video image displayed on the front of the RP projection screen sees a continuous image covering the entire screen and is not aware that the image is made up from sub-segments and segments displayed on individual monitors.

Abstract: A skid accessory for skateboards adapted to be mounted at the end of the board between the wheel supporting trucks and the end of the board to protect the board from engagement with the ground and to act as a braking device by frictional engagement with the ground.

Abstract: A grip accessory for skateboards, a pair of which are mounted on the top surface of the board to form foot or hand holds, each grip accessory being shaped generally like a mushroom with a stem and a head with the head spaced from the top surface of the skateboard to form an annular groove around the stem to receive the feet of a user of the board. The head also forms a hand rest for doing handstands.

Abstract: A portable seat may be folded to a transport position by disposing the seat and support member in generally parallel relationship to each other and in a plurality of select positions longitudinally of each other, the entire seat assembly being suitable to transport by hanging from the belt or the like of a wearer. The seat is provided with a removable prong which pierces the ground to support the seat assembly when it is not occupied and also may be removed for the purpose of utilizing the seat on hard surfaces such as those encountered indoors.