Patent US5142572A successfully refreshed from Google Patents.
US5142572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone terminal discount accessory device
Assignee: Individual
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Filing: 1991-07-25
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Granted: 1992-08-25
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Expires: 2011-07-25
Abstract
Abstract A telephone terminal disconnect accessory device for automatically disconnecting or hanging up the telephone at a first telephone terminal station when it is desirable to hold a conversation at a second telephone terminal station without having to return to the first telephone terminal station where the telephone was answered or from which a call was made, the device comprising a housing having at least two female modular jacks disposed in the walls thereof, and including an on/off switching means, a variable timing means, a latching relay means, a re-set switching means, and a transistor battery power supply.
Inventors
- 👤 Will Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:31
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/428; H04M3/4283; H04M1/00; H04M1/80
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
228 words
A telephone terminal disconnect accessory device useful in facilitating the automatic disconnection or hanging up of a telephone at a first telephone terminal station of a closed telephone system having a number of telephone terminals when it is desirable to hold a conversation at a second telephone terminal station without having to return to said first telephone terminal station to hang up the telephone terminal, or without seeking the assistance of another person to accomplish same, said device comprising a housing having at least two female modular telephone jacks adapted thereto for attachment to the wall plate of an incoming telephone line and said first telephone terminal, said housing including (a) an on/off switching means for activating or deactivating said disconnect accessory device, (b) an operational display means for indicating whether said disconnect accessory device is in the activated or deactivated mode. (c) a timer means for setting a time delay period after which said disconnect accessory device functions to disconnect or hang up the telephone at said first telephone terminal station, (d) a relay means operatively connected to said timing means for breaking the connection at said first telephone terminal station when said time delay period elapses, (e) a re-set switching means for re-activating said disconnect accessory device following use, and (f) a power source for providing an ample supply of power to said disconnect accessory device.
Claim 2
Dependent Claim
228 words
A telephone terminal disconnect accessory device useful in facilitating the automatic disconnection or hanging up of a telephone at a first telephone terminal station of a closed telephone system having a number of telephone terminals when it is desirable to hold a conversation at a second telephone terminal station without having to return to said first telephone terminal station to hang up the telephone terminal, or without seeking the assistance of another person to accomplish same, said device comprising a housing having at least two female modular telephone jacks adapted thereto for attachment to the wall plate of an incoming telephone line and said first telephone terminal, said housing including (a) an on/off switching means for activating or deactivating said disconnect accessory device, (b) an operational display means for indicating whether said disconnect accessory device is in the activated or deactivated mode. (c) a timer means for setting a time delay period after which said disconnect accessory device functions to disconnect or hang up the telephone at said first telephone terminal station, (d) a relay means operatively connected to said timing means for breaking the connection at said first telephone terminal station when said time delay period elapses, (e) a re-set switching means for re-activating said disconnect accessory device following use, and (f) a power source for providing an ample supply of power to said disconnect accessory device.
Claim 3
Dependent Claim
26 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said on/off switching means may be a toggle switch, push button or the like.
Claim 4
Dependent Claim
22 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said operational display means is a light emitting diode (LED).
Claim 5
Dependent Claim
39 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said timing means includes a variable timer, a 51K resistor for setting its minimum time limit, and a one meg potentiometer for setting its maximum time limit.
Claim 6
Dependent Claim
27 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said variable timer is an eight pin integrated circuit timer operating in the monostable mode.
Claim 7
Dependent Claim
22 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said relay means is a low signal, latching type relay.
Claim 8
Dependent Claim
21 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said power source is preferably a 9-volt transistor battery.
Claim 9
Dependent Claim
28 words
The telephone terminal disconnect accessory device as described in claim 1, wherein said housing is fabricated of a durable plastic having the requisite structural integrity and material characteristics.
References Cited (Backward Citations)
US4001520A
Cited
US4529843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |