Abstract: A portable radiotelephone (100) arrangement is disclosed. The portable radiotelephone is preferably foldable and comprises a first housing (102) and a second housing (108) hingedly connected to the first housing portion. The second housing portion has a recess for receiving a battery pack (115) and a battery cover (114) for covering the battery pack. Further, a detachable battery (2600) is coupled to the radiotelephone and covering at least a portion of the battery cover. The first housing portion of the foldable portable radiotelephone may also include a display (126) and a speaker (120). The second housing portion may further include a keypad (136) and an antenna (202).

Abstract: A latching mechanism (160) disposed on an accessory (102) for attaching the accessory (102) to a portable device (100) includes a support (164) and a latch (162) disposed about opposite ends (150, 152) that mate with first and second portions (206 and 300, 302) of a retaining device (123) disposed about opposite ends (112, 122) of the portable device (100). The support (164) includes feet (412, 414) having prongs (420) that face a hooked end (404) of the latch (162). The latch (162) includes a spring (502, 510) coupled to the hooked end (404) such that when the latch (162) is extended, the hooked end (404) exerts a force (700) on the first portion (206) of the retaining device (123) drawing the support (164) into abutment with the second portion (300, 302) of the retaining device (123). The exerted force (700), which is in a plane parallel to a front surface (146) of the accessory (102) extending between the ends (150, 152) thereof, maintains the accessory (102) in attachment with the portable device (100).

Abstract: A battery pack containing a battery of cells includes an outer casing (402) adapted to receive a battery of cells (404); a bonding surface (410) positioned along the outer casing (402); an inner casing (408) adapted to encapsulate the battery of cells (404) and having a surface for bonding to the bonding surface of the outer casing (402); and a bond provided at the bonding surface to bond the inner casing (408) to the outer casing (402). Also, a method for forming a battery pack comprises steps of positioning a battery of cells within a bonding surface of an outer casing of the battery pack; encapsulating the battery of cells with an inner casing, the inner casing having a surface corresponding to the bonding surface of the outer casing; and bonding the corresponding surface of the inner casing to the bonding surface of the outer casing. The battery pack and method for forming the battery pack reduce the weight and complexity in manufacturing.

Abstract: A low-profile rubber keypad with good tactile feel and illuminability includes a plurality of layers adhesively bonded to one another. The top layer of the keypad is a silicone rubber overlay having a plurality of keys protruding therefrom. The rubber overlay is adhesively bonded to an actuation layer including a plurality of thin actuating strips. The actuation layer is adhesively bonded to a tactile layer including a plurality of collapsible resilient domes. The tactile layer is adhesively bonded to a shorting layer including a plurality of conductors. The shorting layer is adhesively bonded to a flex circuit layer including a plurality of conductors.

Abstract: A housing for miniature electronic equipment is disclosed. A mechanical fastening system is utilized in holding front and rear portions of the housing together without conventional fasteners. The front housing portion has cantiliever beam spring catches which penetrate slots in the rear housing and captivate the rear housing and internal components. The spring catches are fixed in position by supporting rails of a detachable battery.

Abstract: A multipurpose hinge apparatus for a foldable telephone includes a flip element and a hookswitch. The flip element is held in the closed and open positions by an enclosed cam element which follows recesses in one shaft securing the hinge elements. The hookswitch is activated by another enclosed cam which follows a recess in a second shaft.

Abstract: A miniature shield with opposing cantilever spring fingers is disclosed. Shield walls, which may be part of a housing for electronic equipment, are designed to insert between a plurality of opposing cantilever spring fingers arranged in a "U"-shaped channel. Torque generated at the bottom of the "U"-shaped channel is minimized by the opposing cantilever spring fingers and enables the channel to be reflow soldered to an electronic circuit board.

Abstract: A leadless chip carrier for RF power transistors or the like is disclosed which includes a body of insulating material having two major surfaces and side walls joining the major surfaces. In a first embodiment, a pattern of conductive pads is deposited on one major surface. A pattern of conductive contact areas is deposited on the other major surface and distributed interconnecting portions of conductive material are deposited to connect the pads to the respective contact areas. In a second embodiment, larger pads and contact areas are provided on a beryllia substrate to provide a leadless chip carrier for RF transistors capable of handling 8 watts. In a third embodiment, a single slot is made conductive to provide the distributed interconnecting portion for one terminal, while in a fourth embodiment, the slot is changed to a plurality of small, tungsten-filled through holes to provide a virtually hermetically sealed leadless chip carrier for RF power transistors.