Patent US5564082A successfully refreshed from Google Patents.
US5564082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity antenna for a wrist telephone
Assignee: AT&T Inc
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Filing: 1994-05-06
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Granted: 1996-10-08
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Expires: 2014-05-06
Abstract
Abstract A radiotelephone wrist device includes a case having a transceiver and a strap attached to the case for fastening the device to a user's wrist. The strap has a top layer and a bottom layer. The top layer is attached to the bottom layer by a pivot mechanism which facilitates rotating at least a portion of the top layer with respect to the bottom layer. A microphone is located on the strap and electrically connected to the transceiver. A speaker is located at an end of the top layer of the strap and electrically connected to the transceiver. A first antenna is located in the bottom layer of the strap. A second antenna is located in the rotatable portion of the top layer of the strap.
Inventors
- 👤 Greg E. Blonder
- 👤 Bertrand H. Johnson
- 👤 George Knoedl, Jr.
- 👤 Adel A. M. Saleh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:19
CPC Classifications
G; G04; G04G; G04G21/00; G04G21/04; G04R; G04R60/00; G04R60/04; H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/273; H04; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/385; H04B2001/3866; H04B2001/3872
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
145 words
A radiotelephone device comprising: a case having a transceiver; a strap attached to the case for fastening the instrument to a user's wrist, the strap comprising a top layer and a bottom layer; a pivot mechanism for attaching said top layer to said bottom layer such that at least a portion of said top layer can rotate with respect to said bottom layer; a microphone located on the strap and electrically connected to said transceiver; a speaker located on said top layer of said strap and electrically connected to said transceiver; a first antenna located in the bottom layer of said strap; a second antenna located in the rotatable portion of said top lay of the strap and electrically separate from said first antenna; and means for electrically isolating said first antenna from said second antenna, said isolating means being included in said pivot mechanism.
Claim 2
Dependent Claim
145 words
A radiotelephone device comprising: a case having a transceiver; a strap attached to the case for fastening the instrument to a user's wrist, the strap comprising a top layer and a bottom layer; a pivot mechanism for attaching said top layer to said bottom layer such that at least a portion of said top layer can rotate with respect to said bottom layer; a microphone located on the strap and electrically connected to said transceiver; a speaker located on said top layer of said strap and electrically connected to said transceiver; a first antenna located in the bottom layer of said strap; a second antenna located in the rotatable portion of said top lay of the strap and electrically separate from said first antenna; and means for electrically isolating said first antenna from said second antenna, said isolating means being included in said pivot mechanism.
Claim 3
Dependent Claim
36 words
The device according to claim 1 wherein the rotating of said top layer away from said bottom layer causes the first antenna and the second antenna to be at an angle with respect to one another.
Claim 4
Dependent Claim
15 words
The device according to claim 2 wherein said angle is between 90 and 180 degrees.
Claim 5
Dependent Claim
12 words
The device according to claim 2 wherein said angle is 90 degrees.
Claim 6
Dependent Claim
15 words
The device according to claim 2 wherein said angle is between 0 and 90 degrees.
Claim 7
Dependent Claim
16 words
The device according to claim 1 wherein said strap is comprised of a flexible insulating material.
Claim 8
Dependent Claim
23 words
The device according to claim 1 further comprising driving means for driving the first antenna and the second antenna with orthogonally independent signals.
Claim 9
Dependent Claim
13 words
The device according to claim 7 wherein said signals are time separated signals.
Claim 10
Dependent Claim
13 words
The device according to claim 7 wherein said signals are frequency separated signals.
Claim 11
Dependent Claim
13 words
The device according to claim 7 wherein said signals are quadrature in phase.
Claim 12
Dependent Claim
14 words
The device according to claim 1 wherein said first antenna is a dipole antenna.
Claim 13
Dependent Claim
14 words
The device according to claim 11 wherein said second antenna is a stub antenna.
Claim 14
Dependent Claim
28 words
The device according to claim 12 wherein said first antenna acts as a ground plane for the second antenna when the device is driven in common excitation mode.
Claim 15
Dependent Claim
17 words
The device according to claim 13 further comprising a center-tapped inductor electrically connected to said first antenna.
Claim 16
Dependent Claim
22 words
The device according to claim 12 wherein said first antenna is directly excitable when the device is driven in differential excitation mode.
Claim 17
Dependent Claim
19 words
The device according to claim 12 wherein said first antenna acts as a ground plan for said stub antenna.
Claim 18
Dependent Claim
14 words
The device according to claim 11 wherein said dipole antenna is a loop antenna.
Claim 19
Dependent Claim
17 words
The device according to claim 1 wherein said first antenna comprises a receiving antenna and transmitting antenna.
Claim 20
Dependent Claim
18 words
The device according to claim 18 wherein said second antenna comprises a receiving antenna and a transmitting antenna.
Claim 21
Dependent Claim
26 words
The device according to claim 1 wherein said strap includes means for adjusting the diameter of the strap so as to fit on a user's wrist.
Claim 22
Dependent Claim
22 words
The device according to claim 20 wherein said adjusting means comprises an inseparable piece permanently connected to said case at one end.
Claim 23
Dependent Claim
22 words
The device according to claim 1 wherein said first and second antennas are comprised of isolated segments of embedded multi-conductor interconnecting cable.
Claim 24
Dependent Claim
19 words
The device according to claim 1 further comprising an active antenna drive which is embedded in said pivot mechanism.
Claim 25
Dependent Claim
51 words
The system according to claim 1 further comprising at least one multifilar wound inductor embedded in the strap, said at least one inductor isolating segments of conductors running parallel to the first antenna in the bottom layer of the strap and the second antenna in the top layer of the strap.
Claim 26
Dependent Claim
22 words
The device according to claim 1 wherein said first antenna is a receiving antenna and said second antenna is a transmitting antenna.
Claim 27
Dependent Claim
22 words
The device according to claim 1 wherein said first antenna is a transmitting antenna and said second antenna is a receiving antenna.
Claim 28
Dependent Claim
159 words
A radiotelephone device comprising: a case having a transceiver; a strap attached to the case for fastening the instrument to a user's wrist, the strap comprising a top layer and a bottom layer; a pivot mechanism for attaching said top layer to said bottom layer such that at least a portion of said top layer can rotate with respect to said bottom layer; a microphone located on the strap and electrically connected to said transceiver; a speaker located on said top layer of said strap and electrically connected to said transceiver; a first antenna located in the bottom layer of the strap, a second antenna located in the rotatable portion of the top layer of the strap and electrically separate from said first antenna, said second antenna being rotatable between a first position in which said second antenna is parallel to said first antenna and a second position in which said second antenna is perpendicular to said first antenna.
Claim 29
Dependent Claim
159 words
A radiotelephone device comprising: a case having a transceiver; a strap attached to the case for fastening the instrument to a user's wrist, the strap comprising a top layer and a bottom layer; a pivot mechanism for attaching said top layer to said bottom layer such that at least a portion of said top layer can rotate with respect to said bottom layer; a microphone located on the strap and electrically connected to said transceiver; a speaker located on said top layer of said strap and electrically connected to said transceiver; a first antenna located in the bottom layer of the strap, a second antenna located in the rotatable portion of the top layer of the strap and electrically separate from said first antenna, said second antenna being rotatable between a first position in which said second antenna is parallel to said first antenna and a second position in which said second antenna is perpendicular to said first antenna.
Claim 30
Dependent Claim
15 words
The device according to claim 27 wherein said strap is comprised of a plastic material.
Claim 31
Dependent Claim
22 words
The device according to claim 27, wherein said pivot mechanism includes means for electrically isolating said first antenna from said second antenna.
Claim 32
Dependent Claim
23 words
The device according to claim 27 further comprising driving means for driving the first antenna and the second antenna with orthogonally independent signals.
Claim 33
Dependent Claim
13 words
The device according to claim 30 wherein said signals are time separated signals.
Claim 34
Dependent Claim
13 words
The device according to claim 30 wherein said signals are frequency separated signals.
Claim 35
Dependent Claim
13 words
The device according to claim 30 wherein said signals are quadrature in phase.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-08 | 2000-04-08 | 2000-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-08 | 2004-04-08 | 2004-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-08 | 2008-04-08 | 2008-10-08 | $7700.00 | Window Closed / Lapsed |