US4949077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable unit with smoke alarm, clock radio, compass, retractable table, and lamp
Assignee: Individual
•
Filing: 1989-10-02
•
Granted: 1990-08-14
•
Expires: 2009-10-02
Abstract
Abstract A personal security device is disclosed which includes, in combination, a smoke detection and smoke alarm system, a radio, a digital time clock, a compass, a high intensity lamp, and a retractable writing table. The writing table is disposed below the lamp beam to facilitate use of the table in a darkened area.
Inventors
- 👤 David G. Mbuthia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:58
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A portable personal-security device self-contained within a housing, comprising a smoke-detector producing an electric-signal output in response to a predetermined threshold of ambient smoke, a radio including a loudspeaker, a digital-time clock, a compass, a high-intensity lamp, a retractable writing table disposed in a manner permitting said lamp to illuminate its surface, said electric-signal output being connected to sound an audible alarm via said loudspeaker and concurrently to operate said lamp, and means within said housing for removable accommodating a battery to provide a source of power for said smoke detector, said clock, said radio, and said lamp.
Claim 2
Dependent Claim
98 words
A portable personal-security device self-contained within a housing, comprising a smoke-detector producing an electric-signal output in response to a predetermined threshold of ambient smoke, a radio including a loudspeaker, a digital-time clock, a compass, a high-intensity lamp, a retractable writing table disposed in a manner permitting said lamp to illuminate its surface, said electric-signal output being connected to sound an audible alarm via said loudspeaker and concurrently to operate said lamp, and means within said housing for removable accommodating a battery to provide a source of power for said smoke detector, said clock, said radio, and said lamp.
Claim 3
Dependent Claim
17 words
A personal security device as described in claim 1 including a strap handle attached to said housing.
Claim 4
Dependent Claim
18 words
A personal security device as described in claim 2 wherein said strap handle is constructed of fire-resistant material.
Claim 5
Dependent Claim
26 words
A personal-security device as described in claim 1, further comprising an integrally constructed device for removably holding a writing instrument along one side of said housing.
Claim 6
Dependent Claim
67 words
A personal-security device self-contained within a portable housing, comprising a smoke detector producing an electric-signal output in response to a predetermined threshold of ambient smoke, a digital-time clock, a compass, a radio including a loudspeaker, a retractable writing table and a lamp positioned to illuminate said table, said electric signal output being connected to sound an audible alarm via said loudspeaker and concurrently to operate said lamp.
Claim 7
Dependent Claim
67 words
A personal-security device self-contained within a portable housing, comprising a smoke detector producing an electric-signal output in response to a predetermined threshold of ambient smoke, a digital-time clock, a compass, a radio including a loudspeaker, a retractable writing table and a lamp positioned to illuminate said table, said electric signal output being connected to sound an audible alarm via said loudspeaker and concurrently to operate said lamp.
Claim 8
Dependent Claim
36 words
The device of claim 5, in which selectively operable switching means associated with said lamp enables selective operation of said lamp on a steady state or on an intermittent basis in response to said electric-signal output.
Claim 9
Dependent Claim
43 words
The device of claim 5, wherein said housing comprises separable upper and said lower halves, said lamp and writing table being mounted to said lower half, and said clock, said compass, said radio and said smoke detector being mounted within said upper half.
Claim 10
Dependent Claim
51 words
The device of claim 7, wherein a battery is also carried within said upper half and wherein wiping electrically conductive contacts are separable engaged to supply power to said lamp upon assembly of said upper and lower halves, whereby to render said lamp operable when said halves are in assembled relation.
Claim 11
Dependent Claim
25 words
The device of claim 8, wherein a removable panel of said upper half provides access to check and/or replace said battery, without separating said halves.
Claim 12
Dependent Claim
30 words
The device of claim 9, wherein latch means for selective release retention of said halves from each other is accessible via removal of the battery panel of said upper half.
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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) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |