Patent US5367570A successfully refreshed from Google Patents.
US5367570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual telephone
Assignee: Individual
•
Filing: 1993-06-25
•
Granted: 1994-11-22
•
Expires: 2013-06-25
Abstract
Abstract A dual phone arrangement allowing two persons to simultaneously listen and talk during the same telephone conversation which includes a pair of telephones connected back-to-back each having a receiver and a transmitter; electrical wires connecting each telephone to each other and to an external telephone line and dialing instrument; and a tubular member interposed between said pair of telephones to provide support for the same on an external stand which may be a shoulder support or a free-standing unit.
Inventors
- 👤 Hector D. Figueroa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:32
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
256 words
A dual telephone which allows two persons to simultaneously listen and talk without an incoming conversation being overheard by a third party, said telephone comprising: a first telephone instrument having a center portion, a forward surface, a rearward surface, and a plurality of apertures extending through said center portion thereof, with a ear piece receiver and a voice transmitter positioned upon said forward surface of said first instrument thereof; a second telephone instrument having a center portion, a forward surface, a rearward surface, and a plurality of apertures extending through said center portion thereof, with a ear piece receiver and a voice transmitter positioned upon said forward surface of said second instrument thereof; a plurality of threaded fasteners, with each of said fasteners passing through a respective one of said apertures of both said first and second instruments to relasably couple said rearward surface of said first telephone instrument to said rearward surface of said second telephone instrument such that said forward surfaces of said instruments are facing in opposed directions; a telephone wire providing electrical communication between said telephone instruments; and a switch mounted within said second instrument center portion and projecting through a further aperture in said second instrument center portion, said switch being in electrical communication with said telephone wire for selectively permitting and precluding electrical communication between said first and said second instruments, whereby said switch is positioned along said second instrument center portion so as to be operable by either of said persons to effect selective operation of said second instrument.
Claim 2
Dependent Claim
256 words
A dual telephone which allows two persons to simultaneously listen and talk without an incoming conversation being overheard by a third party, said telephone comprising: a first telephone instrument having a center portion, a forward surface, a rearward surface, and a plurality of apertures extending through said center portion thereof, with a ear piece receiver and a voice transmitter positioned upon said forward surface of said first instrument thereof; a second telephone instrument having a center portion, a forward surface, a rearward surface, and a plurality of apertures extending through said center portion thereof, with a ear piece receiver and a voice transmitter positioned upon said forward surface of said second instrument thereof; a plurality of threaded fasteners, with each of said fasteners passing through a respective one of said apertures of both said first and second instruments to relasably couple said rearward surface of said first telephone instrument to said rearward surface of said second telephone instrument such that said forward surfaces of said instruments are facing in opposed directions; a telephone wire providing electrical communication between said telephone instruments; and a switch mounted within said second instrument center portion and projecting through a further aperture in said second instrument center portion, said switch being in electrical communication with said telephone wire for selectively permitting and precluding electrical communication between said first and said second instruments, whereby said switch is positioned along said second instrument center portion so as to be operable by either of said persons to effect selective operation of said second instrument.
Claim 3
Dependent Claim
92 words
The dual telephone as recited in claim 1, and further comprising a flat mounting bracket having holes therein aligned with said center portion apertures, said bracket being interposed between said instruments with said threaded fasteners extending through said holes to secure said mounting bracket between said rearward surfaces of said instruments, said bracket further having a tubular receptacle member extending from said mounting bracket for engaging a supporting means for supporting said instruments relative to a surface, whereby said bracket and said instruments are supported above said surface by said supporting means.
Claim 4
Dependent Claim
17 words
The dual telephone as recited in claim 2, wherein said supporting means comprises a free-standing support stand.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |