Detachable back-up battery pack for cell phone

A back-up battery pack for use to charge a cell phone when the cell phone battery is drained allowing the cell phone to be continuously used without interruption.

FIELD OF THE INVENTION

The present invention generally relates to a cell phone accessory and more particularly, relates to a back-up battery pack for a cell phone.

BACKGROUND OF THE INVENTION

The ever popular use of cell phones have become one of the most significant events of the twenty-first century. Cell phones have become so popular that it has become a necessity for everyone to communicate with other people. In certain situations, cell phones have replaced land based phones as a person's primary means of communication.

All cell phones operates on a rechargeable battery pack which needs to be charged every few days. When a person forgets to recharge his cell phone battery, the loss of communication capability by cell phone can be a most inconvenient and troublesome experience. It is therefore desirable to provide a device that can be used with a cell phone to prevent the loss of battery power for the cell phone.

It is therefore an object of the present invention to provide a back-up battery pack for cell phone that does not have the drawbacks or shortcomings of conventional battery packs.

It is another object of the present invention to provide a back-up battery pack for cell phone that can be conveniently carried by a user.

It is a further object of the present invention to provide a back-up battery pack for cell phone that can be actually attached to a cell phone.

SUMMARY OF THE INVENTION

In accordance with the present invention, a back-up battery pack for cell phone is provided.

In a preferred embodiment, the present invention back-up battery pack for cell phone is constructed of a battery casing of generally rectangular shape that has a front surface, a back surface, a top end surface, a bottom end surface and two side surfaces; a rechargeable battery pack in the casing; an electrical connection means on the casing for providing electrical communication with the cell phone; a mechanical connection means on each of the two side surfaces adapted for holding the cell phone in a piggy-back position with the back surface of the casing contacting a back surface of the cell phone; an electrical plug pivotably mounted in the front surface of the casing providing electrical communication between the rechargeable battery pack and a household current from an electrical outlet.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present invention discloses a back-up battery pack for cell phone that can be conveniently attached to the cell phone such that a person would never run out of battery power on the cell phone.

The present invention back-up battery pack for cell phone is a portable recharger for a cell phone that does not require access to an external source of power. The present invention back-up battery pack can be provided as an original equipment market part or can be provided as an after market part. The OEM version consists of a modified cell phone and a battery cartridge. The battery cartridge includes a case made of high impact plastic, internal battery contacts, internal wire, and a flip-up plug built into the top of the unit. To prepare the unit for use, the battery cartridge can be plugged into the cell phone by engaging a male plug on the cell phone with a female receptacle on the back-up battery pack. An electrical plug, that functions pivotably is attached to a front surface of the back-up battery pack such that the plug is kept in a stowed away position, flush against the side of the case most of the time when not in use. When the user needs to recharge the back-up battery pack, the plug can be flipped450into a use position and then plugged into any electrical outlet.

The OEM version of the present invention back-up battery pack can be attached to the cell phone when the cell phone is out of battery power in a piggy-pack position. An after market version of the present invention back-up battery pack would consist of a retractable flash extendable wire and plug which can be extended to plug into the regular charge receptacle on the cell phone case.

The present invention back-up battery pack for cell phone fulfils the need for a device that can recharge a cell phone without connection to an external power source such that the portable use of the cell phone is still possible even when the battery pack inside the cell phone is dead. The appealing features of the present invention back-up battery pack for cell phone are its convenience, money-savings, reliability, and ease of use. By using the OEM version of the back-up battery, the user can simply plug the cell phone into the back-up battery pack such that recharging begins immediately and allows the user to quickly resume any conversation that had been interrupted by a failing battery.

By using the present invention back-up battery pack for cell phone, a user can avoid being cut off from friends, family, or co-workers because of a cell phone with a drained battery. It is especially useful for keeping in touch during a camping trip, or a long distance car trip.

Referring initially toFIG. 1, wherein a present invention back-up battery pack10for cell phone20is shown. The back-up battery pack10is constructed of a battery casing12of generally rectangular shape that has a front surface14, a back surface16, a top end surface18, a bottom end surface22, and two side surfaces24and26. A rechargeable battery pack (not shown) is contained in the casing12, and an electrical connection means30, as shown inFIG. 2, is provided on the casing12for providing electrical communication between the back-up battery pack10and the cell phone20. In the embodiment shown inFIG. 2, a male connector32is provided on the cell phone20, while a female connector34is provided on the casing12for providing electrical communication between the two. It should be noted that the configuration or the embodiment shown inFIG. 2is for OEM equipment. Another embodiment that is more suitable for after market use of the present invention back-up battery pack10is shown inFIG. 4, wherein the electrical communication means30consists of a retractable/extendable connector36which can be readily plugged into the regular charge receptacle of the cell phone20. In this second embodiment, a sliding switch38is used in conjunction with the retractable/extendable connector36such that the connector36can be properly stowed away inside the casing12when not in use.

A mechanical connection means50, shown inFIGS. 1 and 2as clips52,54is further provided on each side of the two side surfaces24and26. The two clips52,54are adapted for holding the cell phone20in piggy-back position with the back surface16of the casing12, contacting a back surface28of the cell phone20. This is better shown inFIG. 3.

In order to recharge the present invention back-up battery pack10, an electrical plug40is pivotally mounted in the front surface14of the casing12to provide electrical communication between the rechargeable battery pack (not shown) and a household current from an electrical outlet (not shown).

Also shown inFIGS. 1 and 3is a belt clip60which is inserted in a slot62formed in the top end surface18of the casing12. The belt clip60allows the back-up battery pack10to be conveniently carried on a person's belt, or any other part of the clothing, or on a purse. The electrical plug40can be advantageously stowed away in a recessed42that is provided in the front surface14of the casing12.

In an alternate embodiment, shown inFIG. 5, the present invention back-up battery pack70can be advantageously provided with the retractable/extendable connector36equipped with a length of wire72which may be coiled on a roller74when the connector36is not in use and retracted by the sliding switch38. The connector36can be easily plugged into a regular charge socket76on the cell phone20. Further shown inFIG. 5, the back-up battery pack70may further include an indicator light78which lights up when the battery is close to be drained inside the casing82.

The present invention back-up battery pack for cell phone has therefore been amply descried in two embodiments and shown inFIGS. 1-5.