US3881834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint seals
Assignee: Individual
•
Filing: 1973-05-10
•
Granted: 1975-05-06
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Expires: 1993-05-10
Abstract
Abstract A flexible, resilient, hollow, elastomeric sealing strip for use in highway joints or the like which comprises an internal, reinforcing network of webs designed to provide controlled foldability of the reinforcing webs, controlled stress during lateral compression, and vertical stability and having a top wall the center of which, under lateral compression of the strip, moves downwardly.
Inventors
- 👤 Thomas C Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:02
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/06; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C11/106; Y; Y10; Y10S; Y10S277/00; Y10S277/921
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
317 words
An elongated, flexible, resilient, hollow sealing member for sealing an expansion or contraction joint comprising: a pair of spaced, substantially parallel side walls, a top wall, a bottom wall, and an internal network of reinforcing webs, said walls and network being integral; said top wall being joined to said side walls and having adjacent its ends plural straight, continuous, inwardly extending portions substantially normal to said side walls and downwardly sloping central portions connected to the inner ends of said straight portions and forming a single, central trough; said internal network including (1) a first Vshaped web terminating at its respective ends in said side walls intermediate the ends thereof and substantially below the junction of said side wall with said top wall and extending downwardly with the apex of said V located midway between said side walls and above the lower ends of said side walls, (2) a pair of outwardly diverging webs extending downwardly from a junction located midway between said side walls and between said apex and said top wall and intersecting said first V-shaped web, and (3) a pair of outwardly diverging webs extending upwardly from said junction and connected to said top wall between said trough and said side walls; and said bottom wall comprising (1) a pair of supporting webs, each connected to one of said side walls at the lower ends of the latter, each of said supporting webs extending inwardly at right angles from said side walls to a junction with one of said downwardly and outwardly extending webs, (2) the portions of said downwardly and outwardly extending webs below their intersections with said first V-shaped web, and (3) the portion of said first V-shaped web lying between the intersections thereof with said downwardly and outwardly extending webs; there being no vertical web tying together the junction of said downwardly and outwardly extending webs and said first V-shaped web.
Claim 2
Dependent Claim
317 words
An elongated, flexible, resilient, hollow sealing member for sealing an expansion or contraction joint comprising: a pair of spaced, substantially parallel side walls, a top wall, a bottom wall, and an internal network of reinforcing webs, said walls and network being integral; said top wall being joined to said side walls and having adjacent its ends plural straight, continuous, inwardly extending portions substantially normal to said side walls and downwardly sloping central portions connected to the inner ends of said straight portions and forming a single, central trough; said internal network including (1) a first Vshaped web terminating at its respective ends in said side walls intermediate the ends thereof and substantially below the junction of said side wall with said top wall and extending downwardly with the apex of said V located midway between said side walls and above the lower ends of said side walls, (2) a pair of outwardly diverging webs extending downwardly from a junction located midway between said side walls and between said apex and said top wall and intersecting said first V-shaped web, and (3) a pair of outwardly diverging webs extending upwardly from said junction and connected to said top wall between said trough and said side walls; and said bottom wall comprising (1) a pair of supporting webs, each connected to one of said side walls at the lower ends of the latter, each of said supporting webs extending inwardly at right angles from said side walls to a junction with one of said downwardly and outwardly extending webs, (2) the portions of said downwardly and outwardly extending webs below their intersections with said first V-shaped web, and (3) the portion of said first V-shaped web lying between the intersections thereof with said downwardly and outwardly extending webs; there being no vertical web tying together the junction of said downwardly and outwardly extending webs and said first V-shaped web.
Claim 3
Dependent Claim
57 words
A sealing member as set forth in claim 1 in which there is provided a second V-shaped reinforcing web terminating at its respective ends in said side walls intermediate the ends of said walls at points above the junctures of said first V-shaped web with said side walls, said second V-shaped web being wholly within said member.
References Cited (Backward Citations)
US3521528A
Cited
US3608442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |