Patent US1543760A successfully refreshed from Google Patents.
Patent US3683330A successfully refreshed from Google Patents.
US3683330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe-to-pass indicator having portions of indicia flashingly illuminated
Assignee: HI WAY SAFTI SIGNAL Mfg CORP
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Filing: 1970-12-14
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Granted: 1972-08-08
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Expires: 1990-12-14
Abstract
Abstract A safety device for indicating from a lead vehicle to following drivers when it is safe to pass. The control means for the device is spring loaded to the off position for safety reasons and all of the wording on the safe-to-pass indicator are clearly visible when the sign is both off and on. A transistorized multi-vibrator is used to activate flashing light indicators.
Inventors
- 👤 Arthur W Lancaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:15
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/50; B60Q1/503; B60Q1/547
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A safe-to-pass type indicator comprising: a vehicle having a forward portion, a rear portion, and an operator''s station; a sign means mounted on the rear portion of said rear portion of said vehicle; message conveying indicia to the effect that it is safe to pass said vehicle when said indicia is flashingly illuminated printed on said said sign with all portions of said indicia being at all times clearly visible; means for flashingly illuminating at least a portion of said indicia; means operatively mounted adjacent said operator''s station for controlling said flashing means and a system operating condition indicating means operatively connected to said controlling means whereby indicator operational malfunctions may be readily determined.
Claim 2
Dependent Claim
114 words
A safe-to-pass type indicator comprising: a vehicle having a forward portion, a rear portion, and an operator''s station; a sign means mounted on the rear portion of said rear portion of said vehicle; message conveying indicia to the effect that it is safe to pass said vehicle when said indicia is flashingly illuminated printed on said said sign with all portions of said indicia being at all times clearly visible; means for flashingly illuminating at least a portion of said indicia; means operatively mounted adjacent said operator''s station for controlling said flashing means and a system operating condition indicating means operatively connected to said controlling means whereby indicator operational malfunctions may be readily determined.
Claim 3
Dependent Claim
16 words
The indicator of claim 1 wherein the control means is biased to a normally ''''off'''' position.
Claim 4
Dependent Claim
27 words
The indicator of claim 1 wherein at least a portion of the indicia is printed on a translucent housing within which is contained said flashing illuminator means.
Claim 5
Dependent Claim
23 words
The indicator of claim 1 wherein said flashing means is a battery intergized, collector-coupled transistor multivibrator operatively connected to lamp type illuminating means.
Claim 6
Dependent Claim
14 words
The indicator of claim 1 wherein said condition indicating means is a pilot light.
Claim 7
Dependent Claim
24 words
The indicator of claim 1 wherein a secondary disconnect means is provided whereby said flashing illuminator may be rendered inoperation in case of malfunction.
Claim 8
Dependent Claim
15 words
The indicator of claim 6 wherein the disconnect means is a quick disconnect type fuse.
Claim 9
Dependent Claim
110 words
A safe-to-pass type indicator comprising: a vehicle having a rear portion and an operator''s station; a sign means mounted on the rear portion of said vehicle; a message conveying indicia printed on said sign with all portions of said indicia being at all times visible, said indicia conveying a message to the effect that it is safe to pass said vehicle when such indicia is flashingly illuminated; a battery intergized, collector-coupled transistor multivibrator operatively connected to a lamp means for flashingly illuminating at least a portion of said indicia; and switch means biased to a normally ''''off'''' position operatively mounted adjacent said operator''s station for controlling said flashing illuminating means.
Claim 10
Dependent Claim
110 words
A safe-to-pass type indicator comprising: a vehicle having a rear portion and an operator''s station; a sign means mounted on the rear portion of said vehicle; a message conveying indicia printed on said sign with all portions of said indicia being at all times visible, said indicia conveying a message to the effect that it is safe to pass said vehicle when such indicia is flashingly illuminated; a battery intergized, collector-coupled transistor multivibrator operatively connected to a lamp means for flashingly illuminating at least a portion of said indicia; and switch means biased to a normally ''''off'''' position operatively mounted adjacent said operator''s station for controlling said flashing illuminating means.
Claim 11
Dependent Claim
27 words
The indicator of claim 8 wherein at least a portion of said indicia is printed on a translucent housing within which is contained the flashing illuminating means.
Claim 12
Dependent Claim
42 words
The indicator of claim 8 including a pilot light type operating condition indicating means operatively connected to said controlling means and a quick disconnect type fuse operatively connected to said controlling means to render said flashing illuminator inoperative in case of malfunction.
References Cited (Backward Citations)
US2866175A
Cited
US2854650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |