US4647788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared radiation bi-level electric control
Assignee: Philips Communication Security and Imaging Inc
•
Filing: 1985-02-15
•
Granted: 1987-03-03
•
Expires: 2005-02-15
Abstract
Abstract An electric switch for controlling a light has an infrared radiation detector. In response to a change in the radiation being sensed by the detector, the light is illuminated to a first brightness level. A manual switch is provided to turn on the light to a second brightness level.
Inventors
- 👤 Donald W. Maile
- 👤 Furman D. Kell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/19; H; H03; H03K; H03K17/00; H03K17/94; H03K17/941; H05; H05B; H05B47/00; H05B47/10; H05B47/105; H05B47/11; H05B47/115; H05B47/13; Y; Y02; Y02B; Y02B20/00; Y02B20/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
An electric switching system for controlling a light located in a given area, said switching system comprising: a detector for sensing infrared radiation in said given area; means for generating a control signal upon a change in the infrared radiation being sensed by the detector; means responsive to the control signal for turning on the light to a first brightness level; and a manual switch for turning on the light to a second brightness level; wherein the second brightness level is greater than the first brightness level.
Claim 2
Dependent Claim
87 words
An electric switching system for controlling a light located in a given area, said switching system comprising: a detector for sensing infrared radiation in said given area; means for generating a control signal upon a change in the infrared radiation being sensed by the detector; means responsive to the control signal for turning on the light to a first brightness level; and a manual switch for turning on the light to a second brightness level; wherein the second brightness level is greater than the first brightness level.
Claim 3
Dependent Claim
33 words
The switching system as in claim 1 wherein the second brightness level is substantially the full brightness capacity of the light and the first brightness level is less than the second brightness level.
Claim 4
Dependent Claim
33 words
The switching system as in claim 1 further comprising a visible light detector and means for enabling the control signal generation means only upon the detection of a given condition of visible light.
Claim 5
Dependent Claim
95 words
An electric control comprising: a detector for sensing infrared radiation in a given area; means for generating a control signal upon a change in the radiation being sensed by the detector; a manual switch; a terminal; means for regulating the electrical power applied to the terminal to a first level in response to the control signal and to a second level in response to one position of the manual switch; and a visible light detector and means for enabling the control signal generation means only upon the detection of a given condition of visible light.
Claim 6
Dependent Claim
95 words
An electric control comprising: a detector for sensing infrared radiation in a given area; means for generating a control signal upon a change in the radiation being sensed by the detector; a manual switch; a terminal; means for regulating the electrical power applied to the terminal to a first level in response to the control signal and to a second level in response to one position of the manual switch; and a visible light detector and means for enabling the control signal generation means only upon the detection of a given condition of visible light.
Claim 7
Dependent Claim
86 words
An electric control comprising: a detector for sensing infrared radiation in a given area; means for generating a control signal upon a change in the radiation being sensed by the detector; a manual switch; means for providing a first output signal in response to the control signal and a second output signal in response to one position of the manual switch; and a visible light detector and means for enabling the control signal generation means only upon the detection of a given condition of visible light.
Claim 8
Dependent Claim
86 words
An electric control comprising: a detector for sensing infrared radiation in a given area; means for generating a control signal upon a change in the radiation being sensed by the detector; a manual switch; means for providing a first output signal in response to the control signal and a second output signal in response to one position of the manual switch; and a visible light detector and means for enabling the control signal generation means only upon the detection of a given condition of visible light.
References Cited (Backward Citations)
US3694690A
Cited
US3703718A
Cited
US3703718B1
Cited
US3958118A
Cited
US4179691A
Cited
US4305006A
Cited
US4346427A
Cited
US4346427B1
Cited
US4342987A
Cited
US4364030A
Cited
US4344071A
Cited
US4377808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |