Abstract: A two-piece bumperband and clamshell assembly for protecting a smartphone subhousing. The bumperband comprise an impact resistant band of material that encircles peripheral edges of the subhousing. The bumperband includes an inwardly facing groove or channel structure that enables the bumperband to clamp against either or both a display screen bezel of the subhousing and the stepped ridge on the edges of the subhousing. The bumperband may also include a raised screen bumper protruding above and to protect the surface of the display screen. A downwardly protruding perimeter flange of the bumper band forms a perimeter gap to frictionally receive an upwardly protruding lip extending around the perimeter a clamshell backing when press-fitted with the subhousing and bumperband.

Abstract: A two-piece bumperband and clamshell assembly for protecting a smartphone subhousing. The bumperband comprise an impact resistant band of material that encircles peripheral edges of the subhousing. The bumperband includes an inwardly facing groove or channel structure that enables the bumperband to clamp against either or both a display screen bezel of the subhousing and the stepped ridge on the edges of the subhousing. The bumperband may also include a raised screen bumper protruding above and to protect the surface of the display screen. A downwardly protruding perimeter flange of the bumper band forms a perimeter gap to frictionally receive an upwardly protruding lip extending around the perimeter a clamshell backing when press-fitted with the subhousing and bumperband.

Abstract: An electrical fine tuning system for a UHF television tuner utilizes a voltage variable capacitor for adjusting the operating frequency of the oscillator. The capacity of the voltage variable capacitor is determined by a potentiometer that is mounted concentrically with the selector shaft and serves as a fine tuning control. An automatic frequency control voltage may be applied to the voltage variable capacitor used for fine tuning or to a second voltage variable capacitor. Circuitry is provided for extending the tuning range of the voltage variable capacitor when a single voltage variable capacitor is used both for fine tuning and automatic frequency control, and an improved mechanical construction is used to couple the voltage variable capacitors to the oscillator.