Abstract: A system useful in providing communications with automatic data collection (ADC) devices employs an antenna located in a potentially hazardous environment, a radio circuit located in a non-hazardous environment, and a coupling apparatus to provide an interface between the antenna and the radio circuit that prevents electrical discharges from occurring in the potentially hazardous environment.

Abstract: A system useful in providing communications with automatic data collection (ADC) devices employs an antenna located in a potentially hazardous environment, a radio circuit located in a non-hazardous environment, and a coupling apparatus to provide an interface between the antenna and the radio circuit that prevents electrical discharges from occurring in the potentially hazardous environment.

Abstract: Field Configurable Radiation Antenna Device for fixed dipole antenna comprising of a hollow tube and at least one pair of directional vanes is described. The beam direction of the antenna can be changed by operationally connecting multiples pairs of directional vanes to the hollow tube and by rotating the directional vanes relatively outer peripheral surface of the hollow tube. Such adjustments allow the user to tune the antenna to meet new or unforeseen coverage issues.

Abstract: An adjustable reflector system for fixed dipole antenna comprising of reflector and several supporting devices is described. The beam direction of the antenna can be changed by rotating the reflector about the Y-axis and/or adjusting the reflector about X axis and Z-axis. Such adjustments allow the user to fine tune the antenna to meet new or unforeseen coverage issues. The plurality of the of the reflector's shapes is disclosed (flat, curved, etc.).

Abstract: Field Configurable Radiation Antenna Device for fixed dipole antenna comprising of a hollow tube and at least one pair of directional vanes is described. The beam direction of the antenna can be changed by operationally connecting multiples pairs of directional vanes to the hollow tube and by rotating the directional vanes relatively outer peripheral surface of the hollow tube. Such adjustments allow the user to tune the antenna to meet new or unforeseen coverage issues.

Abstract: An adjustable reflector system for fixed dipole antenna comprising of reflector and several supporting devices is described. The beam direction of the antenna can be changed by rotating the reflector about the Y-axis and/or adjusting the reflector about X axis and Z-axis. Such adjustments allow the user to fine tune the antenna to meet new or unforeseen coverage issues. The plurality of the of the reflector's shapes is disclosed (flat, curved, etc.).

Abstract: A scanning device has a field-replaceable antenna provided in a door/antenna module. The housing of the device has an outer shell defining an interior space and an access opening extending through the shell and communicating with the space. The door is removably secured to an outer surface of the shell and covers the access opening. An antenna is carried by the door and has a cable extending therefrom into the space. The cable has an outer end with a connector configured to engage a component located in the space. The door is attached to the shell by means of a pair of screw fasteners. The antenna may be externally and pivotally mounted on the door or mounted internally in the door. Preferably, the door has a gasket that seals against an outer surface of the shell to seal the access opening.

Abstract: A hand-held scanning device, such as a pistol-type bar code reader, has a housing having an outer shell defining an interior space. An outer opening in the shell communicates with the space. A tray has an inner portion and an outer closure portion with a sealing surface. The inner portion is sized and shaped to be introducible into and removable from the interior space through the opening. The outer closure portion is dimensioned to close the opening when the inner portion is in the space. The sealing surface sealingly engages an outer surface of the shell to protect the interior space and a component mounted on the inner portion from environmental contamination. The tray is easily removable from the device housing, and the component is easily demountable, to allow for quick and easy replacement of the component and/or tray. The closure portion may be provided with an access opening for a memory card to provide an interface between the component and other elements of the device carried by the housing.

Abstract: A snap-on antenna and connector mounting assembly for a hand-held electronic device, such as a hand-held computer. The hand-held electronic device has a housing with a sidewall and a jack-receiving aperture therein, an antenna jack extending through the jack-receiving aperture, and a flexible bushing positioned in the jack-receiving aperture between the antenna jack and the sidewall. The bushing isolates the antenna jack from the sidewall, so the antenna jack is deflectable relative to the sidewall without being damaged. The snap-on antenna has a substantially rigid base having an interior area therein and having a housing-attachment portion with an aperture communicating with the interior area. A plug connector contained within the interior area has a jack-connecting portion positioned to removably receive the antenna jack such that the antenna can be snapped into and off of the hand-held electronic device between installed and removed positions, respectively.

Abstract: A sheath consists of an elongated member with an internal volume designed to securely and removably receive the end of an elongated cylindrical instrument with a suitable radius, such as a pen or pencil. The sheath can be comprised of an elastomeric material which allows the sheath to expand as the cylindrical instrument is inserted into the internal volume, and thus exert a radial force upon the instrument and restrain any motion of the instrument relative to the sheath. The elastomeric material has a lesser hardness than the screen material so that it will not damage the screen, but a greater hardness than a soft pencil eraser so that it overcomes the problems associated therewith. The sheath can be made with a tip of any shape and sharpness so that it will be compatible with any touch-sensitive screen.