US5452963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crowd control barrier
Assignee: Off Wall Products LLC
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Filing: 1994-07-20
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Granted: 1995-09-26
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Expires: 2014-07-20
Abstract
Abstract A portable crowd control barrier for use in sporting or entertainment events having lightweight body members formed of a resiliently deformable material and each defining an interior chamber and having slots formed in endwalls thereof to receive wooden studs such that the introduction of liquid into the interior chambers deforms the body members, clamping the walls of the slots against the studs and locking the system in place.
Inventors
- 👤 Marc E. Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:56
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/08; E01F15/081; E01F15/086; E01F13/00; E01F13/02; E01F13/022; E01F9/00; E01F9/60; E01F9/70; G; G09; G09F; G09F7/00; G09F7/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
260 words
A crowd control barrier comprising: a plurality of transportable hollow enclosed containers made from a lightweight, resiliently deformable material, said containers each having a top, a bottom, ends, a first side extending vertically upward from said bottom to said top, a second side extending vertically upward from said bottom a lesser distance than said first side and a third side extending from the uppermost part of said second side in an inwardly sloping direction to said top, said containers each having filler openings situated in said top with one of said filler openings adjacent one of said ends; means for coupling adjacent ends of said containers to one another, said coupling means including a pair of slots formed in each adjacent end at a juncture of the adjacent end and the bottom and extending through said bottom and a predetermined distance toward an opposite end and parallel with said first and second sides, each of said slots dimensioned to receive in snug fit a portion of a stud such that when said containers are positioned adjacent one another the slots in each are in alignment and said stud is positioned in the slots formed in each of said containers, wherein introducing a liquid into said containers through said filler openings causes said resiliently deformable material to deform, clamping said stud and locking said containers in position; and a drain formed in said second side of the containers and adjacent the bottom whereby said liquid may be drained from said containers, unclamping said stud and permitting the containers to be separated.
Claim 2
Dependent Claim
260 words
A crowd control barrier comprising: a plurality of transportable hollow enclosed containers made from a lightweight, resiliently deformable material, said containers each having a top, a bottom, ends, a first side extending vertically upward from said bottom to said top, a second side extending vertically upward from said bottom a lesser distance than said first side and a third side extending from the uppermost part of said second side in an inwardly sloping direction to said top, said containers each having filler openings situated in said top with one of said filler openings adjacent one of said ends; means for coupling adjacent ends of said containers to one another, said coupling means including a pair of slots formed in each adjacent end at a juncture of the adjacent end and the bottom and extending through said bottom and a predetermined distance toward an opposite end and parallel with said first and second sides, each of said slots dimensioned to receive in snug fit a portion of a stud such that when said containers are positioned adjacent one another the slots in each are in alignment and said stud is positioned in the slots formed in each of said containers, wherein introducing a liquid into said containers through said filler openings causes said resiliently deformable material to deform, clamping said stud and locking said containers in position; and a drain formed in said second side of the containers and adjacent the bottom whereby said liquid may be drained from said containers, unclamping said stud and permitting the containers to be separated.
Claim 3
Dependent Claim
53 words
The barrier as claimed in claim 1, wherein said filler openings are each dimensioned to receive and support one end of a cylindrical upright having a predetermined length extending vertically upward from said top of said containers, permitting a safety net to be installed whereby the effective height of the barrier is increased.
Claim 4
Dependent Claim
37 words
The barrier as claimed in claim 1, including a rectangular indentation formed in the exterior surface of said first side, said indentation having a plurality of fastener anchors, whereby a signboard may be affixed to the containers.
Claim 5
Dependent Claim
51 words
The barrier as claimed in claim 1, wherein said first, second and third sides and said top and said bottom of at least one of said containers are curved such that said at least one container forms an arcuate shape, permitting the barrier to be formed in a plurality of configurations.
Claim 6
Dependent Claim
53 words
The barrier as claimed in claim 4, wherein said filler openings are each dimensioned to receive and support one end of a cylindrical upright having a predetermined length extending vertically upward from said top of said containers, permitting a safety net to be installed whereby the effective height of the barrier is increased.
Claim 7
Dependent Claim
37 words
The barrier as claimed in claim 4, including a rectangular indentation formed in the exterior surface of said first side, said indentation having a plurality of fastener anchors, whereby a signboard may be affixed to the containers.
References Cited (Backward Citations)
US4681302A
Cited
US4854767A
Cited
US4773629A
Cited
US4869617A
Cited
US5011325A
Cited
US5123773A
Cited
US5387049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |