Replaceable battery pack of rechargeable batteries

Claim 1

An electrical handheld vacuum for generating air suction comprising: a housing encasing electrical circuitry of the electrical handheld vacuum, said housing elongated along a longitudinal direction to define a rear end and a forward end opposite to said rear end, said air suction being generated at said forward end; a releasable battery pack fitted in and substantially filling a depression on the exterior of said housing, said releasable battery pack being slidingly inserted into said depression along said longitudinal direction into said rear end and toward said forward end, said battery pack consisting of a plurality of rechargeable batteries inside an enclosure and a pair of terminal plates mounted inside said enclosure, each of said pair of terminal plates is either the anode or the cathode of said releasable battery pack, and each of said pair of terminal plates is exposed to the outside of said enclosure through at least one aperture in said enclosure; release means for blocking the extraction of said enclosure from said depression on the exterior of said housing, said release means includes a spring biased release button positioned at said rear end, said release button being biased toward a position to block the extraction of said enclosure from said depression on the exterior of said housing; a charging support bracket supporting and securely engaging said housing through first and second engagement elements removably received in respective first and second apertures provided in said housing, said first engagement element being received in said first aperture at a location between said spring biased release button and said enclosure, said charging support bracket extending across said enclosure at said rear end; charging means for charging said plurality of rechargeable batteries, said charging means includes a charging plug rigidly fixed to said charging support bracket and a charging jack rigidly fixed to said housing, whereby said charging plug and said charging jack are operatively connected as said charging support bracket supports and securely engages said housing; and contact means for transferring energy between said charging jack and said releasable battery pack, said contact means including a pair of contact plates cooperatively engaging a respective one of said pair of terminal plates.