Apple seeks patent on dual-use jack

Apple Inc., creator of the iPad and iPhone, is seeking a patent on an invention that will lessen the use of what it calls "the limited housing real estate" on a handheld device.

Application 20100216526, which was published in the database of the U.S. Patent and Trademark Office Aug. 26, covers a single connector that combines receptors for both the microphone and headphone devices.

The rationale for combining functions in one connector is limiting the number of openings in the device's housing, this providing fewer opportunities for dust or moisture to get inside the device, according the application.

Cupertino, California-based Apple applied for the patent in February 2009, with the assistance of Blakely Sokoloff Taylor & Zafman LLP of Los Angeles.