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US4587753A Expired / Lapsed US ⏱️ 0.0 years remaining

House signaling device

Assignee: Individual
•
Filing: 1984-03-16
•
Granted: 1986-05-13
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Expires: 2004-03-16
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Abstract

Abstract A mechanism is disclosed that is secured in a frame for holding the indicia forming material and is used to cover a housing that includes a light source which may be controlled through a photoelectric cell. The sheets making up the indicia are formed in such a manner that the characters are all created in a stylized "8" digital format with a centrally located "1" superimposed down the middle of the "8". The "8" characters with the "1" superimposed are diestampted in a separate sheet so that it alone may be changed to change the indicia to be displayed. The circuit is designed to produce a flashing light under normal conditions to attract an observer. When an emergency is created such as detected by a smoke detector, a red light flasher is seen giving an additional warning at the front of a house.

Inventors

  • 👤 Douglas M. Harper

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 03:07
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/06; G08; G08B; G08B7/00; G08B7/06; G08B7/064

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 235 words
An observable multiple character incidia forming assembly, the improvement comprising: (a) a first sheet of light transmitting material having a plurality of indicia forming characters of a number "8" including a centrally located "1" arranged therein, said indicia formed in a side-by-side arrangement; (b) a second sheet of light blocking material having opaque qualities with the same indicia forming characters as found in said first sheet, but disposed so that they may be superimposed one on the other, said characters having been die cut along the contours of each segment forming said indicia to facilitate removal of said light blocking material from said second sheet at predetermined locations; (c) a frame member engaging each of said first and second sheets of material along their edges and holding all of said sheets to display the indicia formed by said sheets; (d) a light containing housing secured to said frame and extending rearwardly from said frame; (e) a light source causing light to be projected forwardly through said first and second sheets where there is an absence of opaque material; and (f) a photoelectric cell connected in said light source interrupting said light projected when sunlight is equivalent to a predetermined value set in said photoelectric cell; (g) a flasher secured in series with said photoelectric cell; and (h) a switch connected in parallel with said flasher to electrically insert said flasher in the circuit when desired.
Claim 2
Dependent Claim 235 words
An observable multiple character incidia forming assembly, the improvement comprising: (a) a first sheet of light transmitting material having a plurality of indicia forming characters of a number "8" including a centrally located "1" arranged therein, said indicia formed in a side-by-side arrangement; (b) a second sheet of light blocking material having opaque qualities with the same indicia forming characters as found in said first sheet, but disposed so that they may be superimposed one on the other, said characters having been die cut along the contours of each segment forming said indicia to facilitate removal of said light blocking material from said second sheet at predetermined locations; (c) a frame member engaging each of said first and second sheets of material along their edges and holding all of said sheets to display the indicia formed by said sheets; (d) a light containing housing secured to said frame and extending rearwardly from said frame; (e) a light source causing light to be projected forwardly through said first and second sheets where there is an absence of opaque material; and (f) a photoelectric cell connected in said light source interrupting said light projected when sunlight is equivalent to a predetermined value set in said photoelectric cell; (g) a flasher secured in series with said photoelectric cell; and (h) a switch connected in parallel with said flasher to electrically insert said flasher in the circuit when desired.
Claim 3
Dependent Claim 92 words
The invention set forth in claim 1 including: (i) a source of power; (j) relay means having a plurality of electrical contacts connected to said source of power and said light source, said relay means having a coil to be energized for switching between said plurality of electrical contacts; (k) a sensor connected to said source of power for detecting an atmospheric condition; (l) a second light source connected to said plurality of electrical contacts, said second light source fering from said first enumerated light source in at least one observable characteristic.
Claim 4
Dependent Claim 25 words
The invention set forth in claim 2 wherein said relay means includes a smoke or gas detector connected to said coil for changing light sources.
Claim 5
Dependent Claim 21 words
The invention set forth in claim 3 wherein said second light source differs from said first source in at least color.

References Cited (Backward Citations)

US1786155A Cited
GB392608A Cited
CH156621A Cited
US2068827A Cited
US3207948A Cited
US4024532A Cited
US4164824A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-05-12 1989-11-11 1990-05-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-05-12 1993-11-11 1994-05-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-05-12 1997-11-11 1998-05-13 $7700.00 Window Closed / Lapsed

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