Patent US4577991A successfully refreshed from Google Patents.
US4577991A
Expired / Lapsed
US
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Deployable vehicular barricade
Assignee: Individual
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Filing: 1984-11-28
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Granted: 1986-03-25
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Expires: 2004-11-28
Abstract
Abstract A deployable vehicular barricade system includes a plurality of barricade units each having an elongate rigid post slidably received in a below-grade casing. Longitudinally spaced guide plates cooperating between the post and the casing guide the post between an extended position partially projecting from the casing and a retracted position within the casing and also serve to resist vehicular impact to the post in the extended position. A spring in the bottom of the casing and a remotely controlled locking arm and trigger mechanism allow the post to be selectively and instantaneously deployed into the extended position.
Inventors
- 👤 Willard J. Rolow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:08
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/12; E01F13/04; E01F13/044; E01F13/046
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
158 words
A deployable vehicle barricade apparatus for resisting and absorbing vehicular impact comprising: (a) an elongate rigid post having two ends, a top end and bottom end; (b) elongate rigid tubular casing means for receiving said post, said casing means having an inner surface and an outer surface; (c) propellant means for rapidly causing an upper portion of said post proximate said top end to extend beyond said casing means; (d) brace means cooperating between said post and said inner surface of said tubular casing means for resisting and transferring the force of a vehicular impact upon said upper portion of said post to said casing means; and (e) said brace means including at least two spaced-apart brace elements, each of said brace elements cooperating between said post and said inner surface of said casing means to transfer said force to said casing means, said brace elements spaced apart a distance greater than one-half the length of said post.
Claim 2
Dependent Claim
158 words
A deployable vehicle barricade apparatus for resisting and absorbing vehicular impact comprising: (a) an elongate rigid post having two ends, a top end and bottom end; (b) elongate rigid tubular casing means for receiving said post, said casing means having an inner surface and an outer surface; (c) propellant means for rapidly causing an upper portion of said post proximate said top end to extend beyond said casing means; (d) brace means cooperating between said post and said inner surface of said tubular casing means for resisting and transferring the force of a vehicular impact upon said upper portion of said post to said casing means; and (e) said brace means including at least two spaced-apart brace elements, each of said brace elements cooperating between said post and said inner surface of said casing means to transfer said force to said casing means, said brace elements spaced apart a distance greater than one-half the length of said post.
Claim 3
Dependent Claim
34 words
The barricade apparatus of claim 1 wherein said brace means include guide means cooperating between said post and said casing means for permitting said post to move axially with respect to said casing means.
Claim 4
Dependent Claim
23 words
The barricade apparatus of claim 1 wherein at least one of said brace elements is arranged proximate said bottom end of said post.
Claim 5
Dependent Claim
38 words
The barricade apparatus of claim 1 wherein one of said brace elements is uppermost, said brace elements being spaced apart a distance greater than the distance between said uppermost brace element and said top end of said post.
Claim 6
Dependent Claim
48 words
The barricade apparatus of claim 1 wherein said brace means include omni-directional means for resisting said force and transferring said force to said casing means when said force is applied to said upper portion of said post from substantially any direction which is substantially perpendicular to said post.
Claim 7
Dependent Claim
29 words
The barricade apparatus of claim 1 wherein said brace means include means for distributing said force throughout a predetermined surface area of said inner surface of said casing means.
Claim 8
Dependent Claim
31 words
The barricade apparatus of claim 1 wherein said upper portion of said post which extends beyond said casing means is equal to or less than one-half the length of said post.
Claim 9
Dependent Claim
29 words
The barricade apparatus of claim 1 including mass means adjacent said outer surface of said casing means and cooperating with said casing means for absorbing and resisting said force.
Claim 10
Dependent Claim
16 words
The barricade apparatus of claim 8 wherein said mass means includes concrete surrounding said casing means.
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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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |