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US4138093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guard rail cell
Assignee: Individual
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Filing: 1977-05-18
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Granted: 1979-02-06
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Expires: 1997-05-18
Abstract
Abstract Disclosed herein is a cell used preferably with a guard rail to absorb the impact of a vehicle which crashes into the rail. The cell converts the kinetic energy of the automobile and absorbs it by distortion of the cell. The effect of the cushion is that it redirects the vehicle back to the roadway without causing severe damage to the vehicle guard rail or posts.
Inventors
- 👤 Lester N. Meinzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:16
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/04; E01F15/0407; E01F15/0438
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A guard rail system comprising a support post, a guard rail member attached to said post and a cell member attached between said guard rail and said post, said cell member comprising a cylindrical metallic container having circumferentially disposed ribs thereon, damping material disposed on the inner periphery of the container, in such a manner to provide a truncated conical void at the core of said container, so that upon compression the larger portion of the conical void is closest to the guard rail member and resistances increases upon continued deformation and the ribs encourage linear deformation of the container rather than a rupture.
Claim 2
Dependent Claim
104 words
A guard rail system comprising a support post, a guard rail member attached to said post and a cell member attached between said guard rail and said post, said cell member comprising a cylindrical metallic container having circumferentially disposed ribs thereon, damping material disposed on the inner periphery of the container, in such a manner to provide a truncated conical void at the core of said container, so that upon compression the larger portion of the conical void is closest to the guard rail member and resistances increases upon continued deformation and the ribs encourage linear deformation of the container rather than a rupture.
Claim 3
Dependent Claim
14 words
The guard rail assembly of claim 1 wherein said void is under a vacuum.
Claim 4
Dependent Claim
18 words
The guard rail cell member of claim 2 in which said damping composition comprises cement, plaster and vermiculite.
Claim 5
Dependent Claim
38 words
The guard rail cell member of claim 3 in which the ratio of cement to plaster is 50--50 and in which 6 pounds of cement and 6 pounds of plaster is provided for each cubic foot of vermiculite.
Claim 6
Dependent Claim
27 words
The rail cell member of claim 4 in which the vermiculite aggregate has a particle size of approximately one quarter to one thirty second of an inch.
Claim 7
Dependent Claim
22 words
The guard rail cell member of claim 5 in which the void occupies one third of the total volume of the cell.
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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |