US3800735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic warning device
Assignee: Individual
•
Filing: 1972-08-18
•
Granted: 1974-04-02
•
Expires: 1992-08-18
Abstract
Abstract A traffic warning device or barrier comprising an interconnected group of hollow tubes, there being six tubes arranged as the edges of a tetrahedron. At each vertex the tubes communicate with each other, so that there is a continuous passage through the hollow system. The tubes may be rigid or may be inflatable, and there is a filling valve at any suitable location. In use, it is preferred to fill at least the three horizontal tubes with water, dry sand, lead shot, gravel, marbles, or other suitable weighting material. The three partly vertical inclined tubes may be so filled or be filled with air, especially when the barrier is of the inflatable type.
Inventors
- 👤 L Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:06
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/654; E01F9/688
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
33 words
A highway traffic barricade comprising a hollow series of six tubes arranged as edges of a tetrahedron with four vertices with the interiors of the tubes intercommunicating at a plurality of said vertices.
Claim 2
Dependent Claim
33 words
A highway traffic barricade comprising a hollow series of six tubes arranged as edges of a tetrahedron with four vertices with the interiors of the tubes intercommunicating at a plurality of said vertices.
Claim 3
Dependent Claim
15 words
The device of claim 1 having a filling and draining valve adjacent to one intersection.
Claim 4
Dependent Claim
40 words
The device of claim 2 wherein the filling valve is located adjacent to an intersection that is marked differently from the others and is intended to be the top intersection, with the other three intersections lying on a horizontal surface.
Claim 5
Dependent Claim
13 words
The device of claim 1 wherein the tubes are made from inflatable plastic.
Claim 6
Dependent Claim
13 words
The device of claim 1 wherein the tubes are made from self-supporting material.
Claim 7
Dependent Claim
18 words
The device of claim 1 wherein each tube has a diameter no greater than one-ninth of its height.
Claim 8
Dependent Claim
25 words
The device of claim 1 wherein the three bottom tubes are filled with weighting material and the three upwardly extending tubes are filled with air.
Claim 9
Dependent Claim
11 words
The device of claim 7 wherein the weighting material is water.
Claim 10
Dependent Claim
12 words
The device of claim 7 wherein the weighting material is particulate solid.
References Cited (Backward Citations)
GB189414957A
Cited
US2483734A
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US2561016A
Cited
US2762327A
Cited
US2954005A
Cited
GB959082A
Cited
US3105457A
Cited
US3521596A
Cited
US3526199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |