US4845772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable radiotelephone with control switch disabling
Assignee: Motorola Solutions Inc
•
Filing: 1988-06-13
•
Granted: 1989-07-04
•
Expires: 2008-06-13
Abstract
Abstract A portable radiotelephone with control switch disabling is disclosed. A flip element which contains a microphone and covers a keypad and other control buttons when in a closed position also activates a hookswitch. When the hookswitch and microprocessor indicate that the flip element is in a closed position, the on/off switch cannot be activated to turn the portable radiotelephone on or off and switches which control volume level are deactivated.
Inventors
- 👤 Michael P. Metroka
- 👤 Scott B. Davis
- 👤 P. J. Gargulak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:29
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/72; H04M1/724; H04W; H04W84/00; H04B; H04B1/00; H04B1/38; H04B1/40; H04M1/02; H04M1/0202; H04M1/0206; H04M1/0208; H04M1/0214; H04M1/0241; H04M1/0245; H01; H01H; H01H3/00; H01H3/02; H01H3/16; H01H3/161; H01H3/162; H04W52/00; H04W52/02; H04W52/0209; H04W52/0251; H04W52/0254; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
111 words
A portable radiotelephone apparatus having a keypad disposed on an outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the portable radiotelephone apparatus operating from a switchable power source and comprising: means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing the switchable power source from being switched on or off if the portable radiotelephone apparatus is in said produced on-hook condition.
Claim 2
Dependent Claim
111 words
A portable radiotelephone apparatus having a keypad disposed on an outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the portable radiotelephone apparatus operating from a switchable power source and comprising: means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing the switchable power source from being switched on or off if the portable radiotelephone apparatus is in said produced on-hook condition.
Claim 3
Dependent Claim
18 words
A portable radiotelephone apparatus in accordance with claim 1 wherein the movable element further comprises a telephone microphone.
Claim 4
Dependent Claim
34 words
A portable radiotelephone apparatus in accordance with claim 1 wherein said means for producing an on-hook and an off-hook condition in the portable radiotelephone apparatus further comprises an electrical hookswitch coupled to a microprocessor.
Claim 5
Dependent Claim
37 words
A portable radiotelephone apparatus in accordance with claim 1 wherein said means for preventing further comprises means for enabling the switchable power source to be turned on if the portable radiotelephone apparatus is in said off-hook condition
Claim 6
Dependent Claim
18 words
A portable radiotelephone apparatus in accordance with claim 4 wherein said means for enabling further comprises a microprocessor.
Claim 7
Dependent Claim
37 words
A portable radiotelephone apparatus in accordance with claim 4 wherein said means for enabling further comprising means for setting an off-hook memory element to indicate said off-hook condition after said switchable power source has been switched on.
Claim 8
Dependent Claim
41 words
A portable radiotelephone apparatus in accordance with claim 6 wherein said means for preventing further comprises means for comparing said off-hook memory element indication to an indication from said means for producing to determine if the portable radiotelephone apparatus is on-hook.
Claim 9
Dependent Claim
38 words
A portable radiotelephone apparatus in accordance with claim 1 wherein said means for preventing further comprises means for enabling the switchable power source to be switched off if the portable radiotelephone apparatus is in said produced off-hook condition.
Claim 10
Dependent Claim
35 words
A portable radiotelephone apparatus in accordance with claim 1 further comprising means for preventing the adjustment of the acoustic volume of an acoustic transducer when the portable radiotelephone apparatus is in said produced on-hook condition.
Claim 11
Dependent Claim
110 words
A portable radiotelephone apparatus having a keypad disposed on an outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the portable radiotelephone apparatus operating from a switchable power source and comprising: means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing adjustment of the acoustic volume of an acoustic transducer if the portable radiotelephone apparatus is in said produced on-hook condition.
Claim 12
Dependent Claim
110 words
A portable radiotelephone apparatus having a keypad disposed on an outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the portable radiotelephone apparatus operating from a switchable power source and comprising: means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing adjustment of the acoustic volume of an acoustic transducer if the portable radiotelephone apparatus is in said produced on-hook condition.
Claim 13
Dependent Claim
18 words
A portable radiotelephone apparatus in accordance with claim 10 wherein the movable element further comprises a telephone microphone.
Claim 14
Dependent Claim
33 words
A portable radiotelephone apparatus in accordance with claim 10 wherein said means for producing an on-hook and off-hook condition in the portable radiotelephone apparatus further comprises an electrical hookswitch coupled to a microprocessor.
Claim 15
Dependent Claim
41 words
A portable radiotelephone apparatus in accordance with claim 10 wherein said means for preventing further comprises means for enabling the means for adjusting the acoustic volume of said acoustic transducer if the portable radiotelephone apparatus is in said produced off-hook condition.
Claim 16
Independent Claim
114 words
A method of preventing spurious switch operation in a portable radiotelephone operating from a switchable power source and having a keypad disposed on the outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the method comprising the steps of: producing an on-hook condition in the portable radiotelephone apparatus when the movable element is in the first position and producing an off-hook condition in the portable radiotelephone in when the movable element is in the second position; and preventing the switchable power source from being switched on or off when the portable radiotelephone is in said produced on-hook condition.
Claim 17
Independent Claim
114 words
A method of preventing spurious switch operation in a portable radiotelephone operating from a switchable power source and having a keypad disposed on the outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the method comprising the steps of: producing an on-hook condition in the portable radiotelephone apparatus when the movable element is in the first position and producing an off-hook condition in the portable radiotelephone in when the movable element is in the second position; and preventing the switchable power source from being switched on or off when the portable radiotelephone is in said produced on-hook condition.
Claim 18
Dependent Claim
39 words
A method in accordance with the method of claim 14 wherein said preventing step further comprises the step of enabling the switchable power source to be switched on when the portable radiotelephone apparatus is in said produced off-hook position.
Claim 19
Dependent Claim
38 words
A method in accordance with the method of claim 15 wherein said enabling step further comprises the step of setting an off-hook memory element to indicate said off-hook condition after said switchable power source has been switched on.
Claim 20
Dependent Claim
45 words
A method in accordance with the method of claim 16 wherein said preventing step further comprises the step of comparing said off-hook memory element indication to an indication from said means for producing to determine if the portable radiotelephone apparatus is in said on-hook condition.
Claim 21
Dependent Claim
37 words
A method in accordance with the method of claim 14 wherein said preventing step further comprises the step of enabling the switchable power source to be switched off when the portable radiotelephone is in said off-hook condition.
Claim 22
Dependent Claim
36 words
A method in accordance with the method of claim 14 further comprising the step of preventing the adjustment of the acoustic volume of an acoustic transducer when the portable radiotelephone apparatus is in said on-hook condition.
References Cited (Backward Citations)
US3551607A
Cited
US3705959A
Cited
US3852541A
Cited
US3896270A
Cited
US4018998A
Cited
US4471493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |