Patent US4978245A successfully refreshed from Google Patents.
US4978245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid charged roadway barrier
Assignee: Individual
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Filing: 1989-08-21
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Granted: 1990-12-18
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Expires: 2009-08-21
Abstract
Abstract The invention is directed to a light weight, fluid charged, stackable, and easily placeable traffic barrier. The barrier includes a lightweight frame, made up of a skin or other lightweight framing elements. The barrier includes an interior bladder chamber for charging with a weighting fluid.
Inventors
- 👤 John M. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:13
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/08; E01F15/081; E01F15/086; E01F9/00; E01F9/60; E01F9/70
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
A roadway barrier comprising: inverted U shaped shell means having forward and rearward portions, having inner and outer surfaces, and defining a space between said inner surfaces; expandable bladder means for containing a fluid, said bladder means being secured to an inner surface of only one of either of said forward or rearward portions, said bladder means closely following said inner surface of said portion to which it is connected throughout the height of said inner surface and when said bladder is empty of fluid, said bladder resiliently collapsing against said inner surface; and valve means for enabling charging and discharging of fluent material from within said bladder means, whereby when fluent material is charged into said bladder, said bladder expands and substantially entirely fills said space between said forward and rearward portions of said shell means, and when said bladder is discharged, said bladder resiliently collapses within said shell to enable nested stacking of said shell means.
Claim 2
Dependent Claim
158 words
A roadway barrier comprising: inverted U shaped shell means having forward and rearward portions, having inner and outer surfaces, and defining a space between said inner surfaces; expandable bladder means for containing a fluid, said bladder means being secured to an inner surface of only one of either of said forward or rearward portions, said bladder means closely following said inner surface of said portion to which it is connected throughout the height of said inner surface and when said bladder is empty of fluid, said bladder resiliently collapsing against said inner surface; and valve means for enabling charging and discharging of fluent material from within said bladder means, whereby when fluent material is charged into said bladder, said bladder expands and substantially entirely fills said space between said forward and rearward portions of said shell means, and when said bladder is discharged, said bladder resiliently collapses within said shell to enable nested stacking of said shell means.
Claim 3
Dependent Claim
27 words
A roadway barrier as recited in claim 1, further comprising: hinge means connected between said forward and rearward portions for enabling relative hinging movement between said portions.
Claim 4
Dependent Claim
34 words
A roadway barrier as recited in claim 1, further comprising connecting means for linking adjacently positioned barriers one to the other whereby a row of barriers can form a contiguous grouping of said barriers.
Claim 5
Dependent Claim
34 words
A roadway barrier as recited in claim 2, further comprising: connecting means for linking adjacently positioned barriers one to the other whereby a row of barriers can form a contiguous grouping of said barriers.
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) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |