Portable telephone set

• US 20030211874A1
• Filed: 04/29/2003
• Published: 11/13/2003
• Est. Priority Date: 05/07/2002
• Status: Active Grant

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: NEC Corporation
• Inventors: Mizuta, Masatomo, Kohayakawa, Kiyoshi
• Granted Patent: US 8,014,835 B2
• Time in Patent Office: Days
• US Class Current: 455/575.4
• CPC Class Codes: H04M 1/0235 Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts
• CPC Class Codes: H04M 1/0245 using open/close detection
• CPC Class Codes: H04M 1/22 Illumination; Arrangements for improving the visibility of characters on dials

Abstract

A portable telephone set of slide type comprises a main casing, a movable casing, the two casing being slidably coupled and capable of being locked to each other, and a lock releasing means for releasing the lock. The portable telephone set further comprises an illuminating means for illuminating the lock releasing means from the inner side.

Claims

1. A portable telephone set of slide type comprising a main casing, a movable casing, the two casing being slidably coupled and capable of being locked to each other, and a lock releasing means for releasing the lock, wherein:

the portable telephone set further comprises an illuminating means for illuminating the lock releasing means from the inner side.

2. The portable telephone set according to claim 1, wherein the neighborhood of apart with the lock releasing means is disposed is made of a light-transmitting material.

3. The portable telephone set according to one of claims 1 and 2, wherein the main and movable casings are biased by a biasing means such that they are normally held pulled away from each other in long axis directions, and the portable telephone set further comprises a locking means for locking the two casings to each other in a retreated state, in which the two units are in an overlapped state, against the force of the biasing means.

4. A portable telephone set comprising a main casing, a movable casing, a slidably locking means for slidably locking the main and movable casings to each other, a lock release operator disposed on one side of the main or movable casing and operable for releasing the state of lock of the main and movable casings brought about by the slidable locking means, and an illuminating means for illuminating the lock releasing means from the inner side, wherein:

the neighborhood of a part, in which the lock release operator of the main or movable casing is disposed, is at least partly made of a light-transmitting material, the illuminating part being “

on”

/“

off”

controlled at a call arrival call time or a main reception time.

5. A portable telephone set comprising a main casing, a movable casing, a slidably locking means for slidably locking the main and movable casings to each other, a lock release operator disposed on one side of the main or movable casing and operable for releasing the state of lock of the main and movable casings brought about by the slidable locking means, and an illuminating means for illuminating the lock releasing means from the inner side, wherein:

the neighborhood of a part, in which the lock release operator of the main or movable casing is disposed, is at least partly made of a light-transmitting material, the illuminating part being “

on”

/“

off”

controlled at the time of operation of the lock release operator in dependence on whether the lock release operator is operable.