Patent US4096782A successfully refreshed from Google Patents.
US4096782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrier for wheeled vehicles
Assignee: Department of National Defence
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Filing: 1976-05-28
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Granted: 1978-06-27
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Expires: 1996-05-28
Abstract
Abstract Previous devices for inhibiting the passage of pneumatically tired wheeled vehicles have been too heavy or bulky for quick deployment and easy transport. A portable easily assembled barrier is disclosed which has a number of planar cutters which have a base to engage a roadway and to orient the cutting surfaces. These cutters are spaced along an elongated rod by a number of distance pieces and the distance piece at each end can be used to connect one rod to another so that the assembly can span a roadway.
Inventors
- 👤 Pierre J. Deschenes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:27
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A barrier adapted to check passage of pneumatically tired vehicles comprising, in combination, an elongated rod, a plurality of substantially planar cutters each having an aperture therethrough to enable the cutter to be mounted on the rod, each cutter having at least two elongated cutting edges oriented to engage a support surface and to project into the path of vehicle tires, each cutter comprising two similar elongated plates, each plate having a profile defining a central portion and two diametrically opposed cutting tips extending outwardly of the central portion; said two plates being secured together with the length dimensions at right angles to one another and spacer means for spacing said cutters along said rod.
Claim 2
Dependent Claim
115 words
A barrier adapted to check passage of pneumatically tired vehicles comprising, in combination, an elongated rod, a plurality of substantially planar cutters each having an aperture therethrough to enable the cutter to be mounted on the rod, each cutter having at least two elongated cutting edges oriented to engage a support surface and to project into the path of vehicle tires, each cutter comprising two similar elongated plates, each plate having a profile defining a central portion and two diametrically opposed cutting tips extending outwardly of the central portion; said two plates being secured together with the length dimensions at right angles to one another and spacer means for spacing said cutters along said rod.
Claim 3
Dependent Claim
28 words
A barrier as claimed in claim 1 wherein each substantially planar cutter has four triangular portions projecting from a central portion to form the base and cutting edges.
Claim 4
Dependent Claim
24 words
A barrier as claimed in claim 1 wherein the elongated rod is of square section and the holes through the cutters are also square.
Claim 5
Dependent Claim
33 words
A barrier as claimed in claim 1 wherein the spacer means comprises distance pieces for mounting between adjacent cutters and two securing means, one for attachment to each end of said elongated rod.
Claim 6
Dependent Claim
23 words
A barrier as claimed in claim 4 wherein each securing means also comprise means for connecting one elongated rod to another elongated rod.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |