US4295637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guard rail
Assignee: Individual
•
Filing: 1980-05-15
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Granted: 1981-10-20
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Expires: 2000-05-15
Abstract
Abstract A guard rail for use alongside a road or lane comprises two profiled side portions on opposite sides of the guard rail. Said side portions are joined by a gridlike web.
Inventors
- 👤 Anton Hulek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/06; B; B21; B21D; B21D47/00; B21D47/01; B21D47/02; E01F15/04; E01F15/0407; E01F15/0423; E01F8/00; E01F8/0005; E01F8/0041; Y; Y10; Y10T; Y10T29/00; Y10T29/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
In a guard rail for use alongside a road, which comprises a sheet material profiled to form two substantially U-shaped side portions extending longitudinally of the guard rail and a web interconnecting the side portions, the two side portions and the web defining a substantially U-shaped recess therebetween and the side portions projecting substantially perpendicularly from a plane defined by the web, the U-shaped side portions having the base of the U radially spaced from and substantially parallel to said plane, the improvement of the web being a grid.
Claim 2
Dependent Claim
89 words
In a guard rail for use alongside a road, which comprises a sheet material profiled to form two substantially U-shaped side portions extending longitudinally of the guard rail and a web interconnecting the side portions, the two side portions and the web defining a substantially U-shaped recess therebetween and the side portions projecting substantially perpendicularly from a plane defined by the web, the U-shaped side portions having the base of the U radially spaced from and substantially parallel to said plane, the improvement of the web being a grid.
Claim 3
Dependent Claim
13 words
In the guard rail of claim 1, the grid being an expanded mesh.
Claim 4
Dependent Claim
20 words
In the guard rail of claim 1 or 2, the sheet material being of metal coated with a synthetic resin.
Claim 5
Dependent Claim
103 words
In a process of manufacturing a guard rail, which comprises the step of profiling a sheet material to form two substantially U-shaped side portions extending longitudinally of the guard rail and a web interconnecting the side portions, the two side portions and the web defining a substantially U-shaped recess therebetween and the side portions projecting substantially perpendicularly from a plane defined by the web, the U-shaped side portions having the base of the U radially spaced from and substantially parallel to said plane, the improvement of perforating the web and expanding the perforated web to form an expanded mesh between the side portions.
Claim 6
Dependent Claim
103 words
In a process of manufacturing a guard rail, which comprises the step of profiling a sheet material to form two substantially U-shaped side portions extending longitudinally of the guard rail and a web interconnecting the side portions, the two side portions and the web defining a substantially U-shaped recess therebetween and the side portions projecting substantially perpendicularly from a plane defined by the web, the U-shaped side portions having the base of the U radially spaced from and substantially parallel to said plane, the improvement of perforating the web and expanding the perforated web to form an expanded mesh between the side portions.
Claim 7
Dependent Claim
20 words
In the process of claim 4, wherein the sheet material is sheet steel, the step of annealing the expanded mesh.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |