Patent US4964284A successfully refreshed from Google Patents.
US4964284A
Expired / Lapsed
US
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Telephone lock
Assignee: Individual
•
Filing: 1989-12-15
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Granted: 1990-10-23
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Expires: 2009-12-15
Abstract
Abstract A telephone lock for preventing the plug of a telephone from being inserted into a corresponding line jack unit comprises a locking means including a shank member of a suitable length and size to be accommodated in the socket of a line jack unit in substitution for a telephone plug proper. The shank member has a movable locking member mounted thereon which is arranged to be in use moved by the locking means to engage a part of the line jack unit socket to prevent removal of the telephone lock from the line jack unit.
Inventors
- 👤 Denis McDaid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:01
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/66; H04M1/667; E; E05; E05B; E05B67/00; E05B67/36; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6397; H01R24/00; H01R24/60; H01R24/62; H01R24/64; Y; Y10; Y10S; Y10S70/00; Y10S70/72; Y10T; Y10T70/00; Y10T70/40; Y10T70/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A telephone lock for preventing the plug of a telephone from being inserted into a corresponding line jack unit, comprising a locking means including a shank member of a suitable length and size to be accommodated in a socket of the line jack unit in substitution for a telephone plug proper, a movable latch plate mounted adjacent to a free end of the shank member, the latch plate being connected to the locking means by an elongate rotatable pin which passes through an aperture in the latch plate, such that upon operation of the locking means, the latch plate is movable between a lower position and a raised or locking position, and when in the raised or locking position at least a portion of the latch plate projects above an end wall of the shank member and engages a part of the line jack unit socket to prevent removal of the telephone lock from the line jack unit.
Claim 2
Dependent Claim
158 words
A telephone lock for preventing the plug of a telephone from being inserted into a corresponding line jack unit, comprising a locking means including a shank member of a suitable length and size to be accommodated in a socket of the line jack unit in substitution for a telephone plug proper, a movable latch plate mounted adjacent to a free end of the shank member, the latch plate being connected to the locking means by an elongate rotatable pin which passes through an aperture in the latch plate, such that upon operation of the locking means, the latch plate is movable between a lower position and a raised or locking position, and when in the raised or locking position at least a portion of the latch plate projects above an end wall of the shank member and engages a part of the line jack unit socket to prevent removal of the telephone lock from the line jack unit.
Claim 3
Dependent Claim
51 words
A telephone lock as claimed in claim 1, wherein the pin has a cam means disposed on the pin in the region of the aperture in the latch plate, the cam means cooperating with the latch plate during rotation of the pin to move the latch plate between its two positions.
Claim 4
Dependent Claim
26 words
A telephone lock as claimed in claim 1, wherein the latch plate is located in a pair of recesses defined in sidewalls of the shank member.
Claim 5
Dependent Claim
18 words
A telephone lock as claimed in claim 1 wherein the locking means comprises a key operated barrel lock.
Claim 6
Dependent Claim
17 words
A telephone lock as claimed in claim 4 wherein the barrel lock is fixed in a housing.
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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |