Abstract: The PTT assembly (100) self locates and then locks a back support plate (106) and switches (146, 148) directly to an inner surface (134) of a housing wall (132). On the outer surface (136) of the housing wall (132), keypad plungers (116) self locate through holes (140) in the housing wall. The perimeter of the keypad itself is retained by a bezel (110) that snaps into the housing (132). A hook (130) extends from the bezel (110) to lock and fix the travel distance of the plungers (116) to the switches (146, 148). With the back support plate (106) firmly in place, the keypad actuation force remains consistent since the travel distance of the plungers (116) to the switches (146, 148) is fixed by the hook (130) length. Additionally, the back support plate (106) supports the switches without bowing under the applied plunger force further ensuring a consistent actuation force.

Abstract: A radio (100) includes an improved speaker porting apparatus which minimizes the occurrence of water intrusion. A keypad membrane (106) has an opening (126) through its front and back surfaces and includes tunneled speaker porting (134) formed within the back surface (122) to direct audio into the opening (126). A circuit board (108) fits onto the back surface (122) of the keypad membrane (106), the circuit board (108) includes speaker porting holes (128) divided into first and second halves (130, 132). The first half of the speaker porting holes (130) align with the opening (126) of the keypad membrane (106) while the second half of the speaker porting holes (132) align with the tunneled speaker porting (134) of the keypad membrane (106). A speaker cone (138) covers the first and second halves of the speaker porting holes (130, 132).

Abstract: An electrical interface (210) for an electronic device (200) includes an integral connector portion (215). The connector portion (215) has protected connector contacts (220) which provide an electrical signal path to the internal circuitry of the device. The electrical interface (210) has a contact surface (112) disposed proximate to the connector portion (215) and interface contacts (117) electrically decoupled from the connector contacts (220). The contact surface (112) is responsive to a mechanical force, to electrically couple at least one of the interface contacts (117) to at least one of the connector contacts (220).

Abstract: A device used with a portable radio (10) and associated carrying case (30) which can automatically adjust radio control functions such as audio output, DTMF tone level mode telephone hang-up or illumination levels of the radio depending on the radio's position in relation to the carrying case. The radio (10) includes a hall effect switch (14) used to signal the a microprocessor within the radio when actuated. A magnet (38) located within the case (30) actuates the hall effect switch (14) when the radio (10) is placed within the case (30). The microprocessor is then signaled to change radio function aiding the user in the operation of the radio (10) depending on the its position.

Abstract: A battery (10) includes at least one cell (71) which is contained in a housing (16). Mating mechanisms, located on the housing, selectively attach the battery to the radio. The mating mechanisms include a protrusion (36) selectively receivable (64) by the radio. For electrical coupling, at least one electrical contact (18) is located on the protrusion (36).

Abstract: A battery (10) includes at least one cell (71) which is contained in a housing (16). Mating mechanisms, located on the housing, selectively attaches the battery to the radio. The mating mechanisms include a protrusion (36) selectively receivable (64) by the radio. At least one electrical contact (18) is located on the protrusion (36).

Abstract: A detachable self-contained door cover assembly (105) includes a housing (101) with an integral socket (160), a hinge member (140) having a rotation track (153), and a door cover (120) having an integral hinge shaft (123). The hinge shaft (123) engages the rotation track (153) to rotatably couple the door cover (120) to the hinge member (140) about an axis of rotation extending through the hinge shaft (123) and the rotation track (153). The hinge member (140) is attached to the socket (160), and is detachable when a force exceeding a threshold value is applied to the hinge member (140), thereby disengaging the hinge member (140) from the socket (160) without substantial damage to the hinge member (140) or to the housing (101).

Abstract: A control and antenna mount assembly (100) includes an antenna mount portion (130) having a top portion (132) for mating to an antenna (142). Assembly (100) also includes an insert member (122), control knob (110) having selector contact (118) and a retainer ring (120) all connected to antenna mount (130), together forming a rotary switch, concentric to antenna mount (130).

Abstract: A portable radio assembly comprises a radio housing (12), a battery housing (14), and a sliding clamp (40) for interconnecting the housings (12 and 14).

Abstract: A dual function rotary assembly (100) functions as a potentiometer and a momentary switch. The dual function assembly (100) includes a rotary shaft (106) that when rotated to a predetermined position, such as its final rotational position, may be pulled to provide a momentary contact between two switching terminals (116, 126).