Portable communication device

• US 5,109,539 A
• Filed: 11/01/1989
• Issued: 04/28/1992
• Est. Priority Date: 03/31/1989
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Inubushi, Toshiya, Musha, Atsushi
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): URBAN, EDWARD F
• Application Number:
  US07/430,483
• Time in Patent Office: 909 Days
• Field of Search: 455/89, 455/90, 455/95, 455/97, 455/347, 455/349, 455/356, 455/351, 379/431, 379/433, 379/434, 343/702, 343/715, 343/720, 343/880, 343/883, 343/889, 343/901, 340/825.44
• US Class Current: 455/575.1
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04M 1/0237 Sliding mechanism with one degree of freedom
• CPC Class Codes: H04M 1/03 Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Abstract

A portable radio device in which a radio telephone device body and a receiver unit are separately constructed and connected together by a pair of adjustable supporting rods. As a result, the distance between the radio telephone device body and the receiver unit can be adjusted according to whether the device is being used as a telephone unit or a pager unit. While being used as a telephone, the distance between a receiver and a microphone can be easily adjusted to the distance between an ear and a mouth of a user. When the device is used as a paper, it can be miniaturized so as to be conveniently carried.

Claims

1. A portable communication device, comprising:

a. a radio telephone device body enclosing therein a radio instrument means for transmitting information signals;

b. a receiver unit formed independently of said radio telephone device body and enclosing therein a telephone receiver;

c. support means comprising at least one supporting rod for holding said radio telephone device body and said receiver unit in an adjustable spaced-apart relationship; and

d. means for adjusting the distance between said radio telephone device body and said receiver unit such that said device is usable as a pager when said receiver unit is adjacent said radio telephone device body and as a portable telephone when said receiver unit is spaced apart from said radio telephone device body.

2. The portable communication device according to claim 1, wherein said support means includes a plurality of supporting rods.

3. The portable communication device according to claim 2 wherein at least one of said plurality of supporting rods is a metal rod to be used as an antenna.

4. The portable communication device according to claim 2 wherein housing spaces are provided for said plurality of supporting rods and wherein an air hole is provided in said housing spaces.

5. The portable communication device according to claim 4, wherein said plurality of supporting rods includes a first metal rod to be used as an antenna, and a second rod having a pair of metal conductors insulatively disposed along a parallel axis thereof, a first metal spring having one end electrically connected to a printed circuit board provided in said radio telephone device body and placed in contact with said first metal rod, said telephone receiver is connected through a signal wire to one end of said metal conductors, a second metal spring provided in said radio telephone device body is placed in contact with the other end of said second rod, and said printed circuit board is connected to said second metal spring through a signal wire.

6. The portable communication device according to claim 5, wherein the supporting rod for providing said pair of metal conductors comprises an insulator.

7. The portable communication device according to claim 5, wherein a telephone unit and a pager unit are provided on the surface of said printed circuit board, and a control unit is provided on the back thereof.

8. The portable communication device according to claim 5, wherein said radio telephone device body is mounted on the supporting rods, and said supporting rods are encased in the receiver unit.

9. The portable communication device according to claim 8, wherein a microphone is provided on said radio telephone device body, and a printed circuit board on which are mounted a telephone unit, a pager unit and a control unit is provided on said receiver unit.

10. The portable communication device according to claim 1, wherein said device further comprises springs for exerting an outward force on at said least one support rod.

11. The portable communication device according to claim 1, wherein a corresponding engaging lever and hook are provided on the opposed surfaces between said radio telephone device body and said receiver unit.

12. The portable communication device according to claim 11 wherein said device further comprises a coil spring for forcing said engaging lever in an engaging direction.

13. The portable communication device according to claim 11, wherein said device further comprises a microswitch which is opened and closed by movement of said engaging lever to electrically switch said device to a telephone unit and a pager unit.

14. The portable communication device according to claim 1, wherein said receiver unit is mounted on the supporting rod, and said supporting rod encased in said radio telephone device body.

15. The portable communication device according to claim 14, wherein said supporting rod is provided with a plurality of recesses so that said radio telephone device body is securable at a plurality of distances from said receiver unit.

16. The portable communication device according to claim 1, wherein said supporting rod is provided with a recess engaged by an engaging pawl provided on the radio telephone device body when said receiver unit is moved away from said radio telephone device body.

17. The portable communication device according to claim 16, wherein said device further comprises a spring for forcing said engaging pawl in an engaging direction.

18. A portable communication device, comprising:

a radio telephone device body enclosing therein a microphone for transducing sound into electrical signals;

a receiver unit formed independently of said radio telephone device body and enclosing therein a telephone receiver and a radio instrument means for transmitting information signals including said electrical signals;

support means comprising at least one supporting rod for holding said radio telephone device body and said receiver unit in an adjustable spaced-apart relationship; and

means for adjusting the distance between said radio telephone device body and said receiver unit such that said device is usable as a pager when said receiver unit is adjacent said radio telephone device body and as a portable telephone when said receiver unit is spaced apart from said radio telephone device body.