Hinge device and cell phone using the hinge device

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S347000, C455S349000, C455S351000, C379S433010, C379S433130, C379S428010

Reexamination Certificate

active

07027845

ABSTRACT:
An object of this invention is to provide a hinge device simple in structure, excellent is cost efficiency, and excellent in durability, and a cellular phone using the hinge device.To attain this object, the hinge device includes a tubular member5, a catch3which includes engagement projected parts38each having a convex surface with a specified radius of curvature formed thereon, a energizing means4, and a disk2which includes engagement recessed parts32engaged with the engagement projected parts in regions opposed to the engagement projected parts32of the catch, respectively, and which is rotatably connected with the catch, each of the engagement recessed parts32having concave surfaces with a radius of curvature larger than the radius of curvature of the engagement recessed parts formed thereon. An engagement state in which the engagement projected parts38are engaged with the respective engagement recessed parts32is maintained by an energizing force of an energizing unit to fix the cover body section, whereas the engagement state is released by opening and closing the cover body section against the energizing force.

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patent: 6678539 (2004-01-01), Lu
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patent: 2002-130250 (2002-05-01), None
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patent: 2002-300242 (2002-10-01), None

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