About 24 results
https://drivepatents.com/patents/1002801 · 2 May 2012
Female guide portions (20) for slidingly attaching a battery pack (B) are formed by integral molding of a case main body. Exposed step portions are formed on the female guide portions (20), which includes protruding portions (21) as thin-walled portions by...
https://drivepatents.com/patents/1002731 · 2 May 2012
An electric power tool system comprises a tool main body (10), a battery pack (30) detachably attached to the tool main body and a first charger (50; 150; 250; 350) that charges the battery pack. The first charger is detachably attached to the tool main bo...
https://drivepatents.com/patents/1016291 · 26 Jan 2011
A contact less charging apparatus (10) comprises an electric power transmission coil (60), a plate member (30) and a spring (50). The plate member (30) is freely displaceable between a first position at which the plate member (30) is spaced from and above ...
https://drivepatents.com/patents/1066975 · 31 May 2006
A protective circuit of a battery pack and a method of operating the protective circuit prevents the battery cells from being overcharged by directly detecting overcharge or detecting disconnection of sensing wires, which sense the voltage of battery cells...
https://drivepatents.com/patents/1071406 · 28 Dec 2005
Disclosed herein is a convenient and economical mobile charger, which is small enough to be held in one hand and can electrically charge a portable electronic device by using an embedded secondary electrical cell to which electric power is supplied, partic...
https://drivepatents.com/patents/1072438 · 16 Nov 2005
The invention concerns a combination of a power supply, for example a battery pack, and an electrical appliance, for example a control device for an actuator, where the appliance and the power supply are connectable by a rotational connection for relative ...
https://drivepatents.com/patents/1080959 · 12 Jan 2005
The present invention relates to a back-up battery for an electronic device with a rechargeable battery, which electronic device is provided with a contact for connecting a battery charger and which back-up battery consists of one or more battery cells. Ac...
https://drivepatents.com/patents/1081774 · 8 Dec 2004
A battery venting system that is useful for cordless power tools. The system can include a cell that may have a sleeve with a plurality of apertures surrounding a peripheral side face of the cell to enhance heat dissipation from the cell. A plurality of ce...
https://drivepatents.com/patents/1082641 · 3 Nov 2004
The present application relates to the prevention of electrochemical corrosion at charging contacts, in particular at charging contacts of a battery-powered handpiece and its charger device of a dental curing light, especially in the presence of electrical...
https://drivepatents.com/patents/1083717 · 29 Sep 2004
The present invention relates to an electrical cabinet for configuring an uninterruptible power system. The cabinet (20) has a plurality of receiving locations receiving a power module and/or a battery pack. Each receiving location (30) includes at least o...