Rechargeable battery pack for mobile telephones

A battery pack for holding at least one battery and for connecting to a mobile telephone for supplying electrical power thereto, the battery pack comprising:

• (a) a case having a top portion and a base portion;
• (b) a plurality of elongate, first apertures formed in said base portion of said case, said plurality of said first apertures each having a longitudinal axis, each spaced from one another and aligned with one another along a line substantially orthogonal to the longitudinal axis of each said first aperture;
• (c) a plurality of elongate, second apertures formed in said top portion of said case, said plurality of said second apertures each having a longitudinal axis, each spaced from one another and aligned with one another along a line substantially orthogonal to the longitudinal axis of each said second aperture, said second apertures being located in said top portion of said case at positions offset from the positions of said first apertures in said base portion of said case;
• (d) a plurality of first electrical terminals, each said first electrical terminal having a first end and a second end, said first end of each said first electrical terminal being located in one of said first apertures, and said second end of each said first electrical terminal being located in one of said second apertures;
• (e) a plurality of first columns each having a distal end and a proximal end connected to said base portion of said case, the distal end of each said first column extending to one of said second apertures in said top portion of said case and holding said first end of one of said first electrical terminal therein;
• and
• (f) a plurality of second columns each having a distal end and a proximal end connected to said top portion of said case, said distal end of each said second column extending to a said first aperture in said base portion of said case and holding said second end of one of said first electrical terminal therein.

A battery pack for holding a battery and for connecting to a mobile telephone having a first rib, the battery pack comprising:

• (a) a case for holding the battery;
• and
• (b) a latch mechanism for removable connection to the mobile telephone, said latch mechanism including:
• (i) a torsion beam having opposite first and second ends connected to said case, said torsion beam having length between the opposite first and second ends;
• (ii) a first tab extending in a direction transversely away from said torsion beam, and having a distal end which extends away from said case for engaging the rib of the mobile telephone;
• (iii) a second rib projecting from said torsion beam in a direction away from said case, said second rib extending for a distance along the length of said torsion beam;
• and
• (iv) a second tab extending away from said torsion beam in a direction substantially opposite to the direction said first tab extends, when said latch mechanism is placed against the mobile telephone and said second tab is pressed away from said case, said torsion beam resiliently twists and rotates about said second rib and said first tab rotates in a direction towards said case disengaging said distal end of said first tab from the first rib of the mobile telephone.

A battery pack for holding at least one battery and for connecting to a mobile telephone for supplying electrical power thereto, the battery pack comprising:

• (a) a case for holding the battery;
• (b) a recharging circuit disposed in said case;
• (c) a plug including first and second prongs spaced from one another, and generally parallel to each other, said plug being rotatably connected to said case, wherein said plug is rotatable from a first position having said prongs retracted in the case, to a second position with said prongs projecting from said case, said prongs being electrically connected to said recharging circuit, said prongs having length, one of said prongs including a groove formed along the length;
• and
• (d) a contact mounted to said case, said contact having an end which is received in said groove of said one of said prongs when said plug is in said first position for releasably retaining said plug in said first position.

A battery pack for holding at least one battery and for connecting to a mobile telephone for supplying electrical power thereto, the battery pack comprising:

• (a) a case for holding the battery;
• (b) a recharging circuit disposed in said case;
• (c) a plug including first and second prongs spaced from one another, and generally parallel to each other, said plug being rotatably connected to said case, wherein said plug is rotatable from a first position having said prongs retracted in the case, to a second position with said prongs projecting from said case, said prongs being electrically connected to said recharging circuit, one of said prongs including a longitudinal axis and a base, said one of said prongs rotating with the plug about an axis of rotation passing through said base of said one of said prongs and intersecting the longitudinal axis of said one of said prongs;
• and
• (d) an electrical brush connected to said recharging circuit, said electrical brush biased to press against said base of said one of said prongs for electrically connecting to said one of said prongs, said electrical brush pressing against said base of said one of said prongs at a location removed from the longitudinal axis of said one of said prongs, generally in the direction of rotation of said plug when said plug rotates from said first position to said second position to aid in maintaining said plug in said second position.