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US5328292A Expired / Lapsed US ⏱️ 0.0 years remaining

Traffic barrier chain

Assignee: Individual
•
Filing: 1993-03-11
•
Granted: 1994-07-12
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Expires: 2013-03-11
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Abstract

Abstract The traffic barrier was designed to give law-enforcement officers an effective traffic barrier which can be easily carried in the trunk of a car and quickly deployed across a roadway and just as quickly, removed from the roadway as the situation warrants. There is no need for assembly or mechanical procedure, the chain is simply stretched across the roadway at a right angle to the direction of traffic and pulled taut. The traffic barrier chain is designed so that no matter how the chain is placed on the road surface, half of the splines will be facing the direction of the traffic flow at an angle of 45 degrees. The other half will be facing the other direction. Deployment of the traffic barrier chain is a preferable option to using an expensive patrol car for a road block, or attempting to shoot out the tires or radiator of a vehicle. The traffic barrier chain would be a useful addition to the entries of security facilities where traditional gates are vulnerable to breech by ramming with a vehicle.

Inventors

  • 👤 Francis R. Williams

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 05:17
CPC Classifications
F; F41; F41H; F41H11/00; F41H11/08; E; E01; E01F; E01F13/00; E01F13/12

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 94 words
A traffic barrier comprising: a chain means comprising of a series of interconnected links having openings therethrough with each link passing through the opening of each adjacent link, said links being pivotable relative to each other; an elongated rod means extending through the opening of at least a plurality of adjacent links of said chain means, said rod means being fixedly attached to said links at approximately a mid-point of said rods means and; said rod means having each end configured as a sharpened point whereby said points are capable of puncturing vehicle tires.
Claim 2
Dependent Claim 94 words
A traffic barrier comprising: a chain means comprising of a series of interconnected links having openings therethrough with each link passing through the opening of each adjacent link, said links being pivotable relative to each other; an elongated rod means extending through the opening of at least a plurality of adjacent links of said chain means, said rod means being fixedly attached to said links at approximately a mid-point of said rods means and; said rod means having each end configured as a sharpened point whereby said points are capable of puncturing vehicle tires.
Claim 3
Dependent Claim 12 words
The traffic barrier of claim 1, wherein said links are square shaped.
Claim 4
Dependent Claim 21 words
The traffic barrier of claim 1, where in the cross-sectional shape of said elongated rods may be round, square or triangular.

References Cited (Backward Citations)

US2313388A Cited
US2353386A Cited
US2346713A Cited
US2906507A Cited
US3387824A Cited
US4382714A Cited
US5123774A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-07-11 1998-01-10 1998-07-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-07-11 2002-01-10 2002-07-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-07-11 2006-01-10 2006-07-12 $7700.00 Window Closed / Lapsed

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