Abstract: A mechanical, M-to-N, reciprocating millimeter waveguide switch is provided, where M and N are integers. A mechanical, one-to-four, reciprocating millimeter waveguide switch is also provided, together with a method for switching millimeter waves from one input to one of four outputs is also provided.

Abstract: A mechanical, M-to-N, reciprocating millimeter waveguide switch is provided, where M and N are integers. A mechanical, one-to-four, reciprocating millimeter waveguide switch is also provided, together with a method for switching millimeter waves from one input to one of four outputs is also provided.

Abstract: A computer readable storage medium includes executable instructions to calculate a default number of major tick marks as a function of a minimum distance between major tick marks and the length of a GUI control. A whole number of major tick marks that evenly divides a range of values to be mapped along the length of the GUI control is iteratively searched. A whole number of major tick marks is displayed along the length of the GUI control. The default number of major tick marks is the origin from which the search begins.

Abstract: An electromagnetic field signal communications system (200) is based on a pair of specially configured and positioned transducers (230a/230b), having electrical conductors (232) wound onto generally toroidal or C-shaped cores (233). The positioned cores include an air gap (234) from which its electromagnetic fields (40) are generated when excited with input electrical data (221a/221b) signals or sensed by induction via their corresponding electromagnetic flux fields. The pair of transducers (230a/230b) are ideally suited for unidirectional or bidirectional electromagnetic communications between electronic devices of distinct types. Data (221a/221b) transfer is facilitated via precisely positioning and aligning the transducer air gaps (235/235). Embodiments of systems teaching the use of portable hand held devices (210) in communications with a computer (260) and digital cameras or printers (265) are presented.

Abstract: A locking device is provided for securing a protective bedliner to the interior of a pick-up truck cargo bed wherein the cargo bed has side walls with inwardly extending horizontal flanges and vertically, downwardly extending flanges spaced from the side walls of the truck. The side walls of the bedliner are provided with a plurality of circular apertures overlapping the bottom edges of the vertical flanges and a locking device is associated with each aperture. Each locking device includes a base plate engageable with the wall of the bedliner around an aperture and a flat planar locking tongue extending perpendicular to the base plate through the aperture. The locking tongue includes a shank portion having first and second substantially parallel edges disposed substantially perpendicular to the base plate and a retainer portion extending laterally from the shank portion substantially parallel to the base plate.