Abstract: Chair cushions and placemats are formed of a top fabric panel attached to a bottom panel which as a high coefficient of friction. The bottom panel is a rubberized web with an open pattern. The pattern consists of a plurality of rows of parallel, spaced, side by side, relatively small size elongated openings extending in a first direction. A plurality of columns of collinear, spaced, relatively large size elongated openings extend in a second direction. The first and second directions are orthogonal. A plurality of rows of rectangular areas, some of which of are devoid of openings, also form a part of the pattern.

Abstract: Chair cushions and placemats are formed of a top fabric panel attached to a bottom panel with a high coefficient of friction. The bottom panel is a rubberized web with an open mesh pattern. It is formed of parallel, spaced, undulating thread-like members which extend in one direction. First and second sets of parallel, spaced, straight thread-like members respectively extend along lines oppositely inclined relative to that direction. The straight thread-like members intersect with the undulating thread-like members forming enlarged nodes aligned along spaced parallel lines extending in the perpendicular direction.

Abstract: A system and method are described which provide for fast sequential access of stored data, as required, for example, in the performance of multiply/accumulate operations in neural network calculations and other sequential computations. The system includes a video dynamic random access memory (VRAM) with a shift register, a digital signal processor (DSP), and a data/address/control bus for coupling the DSP and VRAM. The VRAM has a parallel access port and a serial access port, and the DSP has a first input-output (I/O) port and a second I/O port. The second I/O port of the DSP is coupled, via the bus, to the parallel- and serial-access ports of the VRAM. In response to data applied via the first I/O port, the DSP transfers the applied data, via the second I/O port, the data bus, and the parallel (or serial) access port, to the VRAM for storage. The stored data is then accessed (by the DSP) as a serial sequence via the serial access port.

Abstract: A trailer hitch system (10) having longitudinal hitch ball movement whereby a trailer tow point can be laterally adjusted. The longitudinal hitch ball movement is facilitated by a screw shaft (20) housed in the trailer hitch system (10) and readily accessible from either side of the trailer hitch system (10). The trailer hitch system (10) may accommodate multiple hitch balls (22, 23) and allows any one of the hitch balls (22, 23) to be selectively centered on a bumper (82) of a towing vehicle. Hitch balls (22, 23) of diverse sizes may be interchanged while the trailer hitch system (10) is installed on the towing vehicle. The trailer hitch system (10) may be adapted to any type of towing vehicle. An adaptor (110) allows attachment of other types of hitches which are also laterally adjustable therewith.