US3629986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion joint filler
Assignee: MFG ASSOCIATES Inc
•
Filing: 1969-12-22
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Granted: 1971-12-28
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Expires: 1989-12-22
Abstract
Abstract An expansion joint assembly used between concrete slabs. A lower expansion joint strip that becomes permanently positioned between the concrete slabs and a removable topping strip that exposes a controlled depth groove above the expansion joint strip for receiving a sealant. In a modification, the upper edge of the expansion joint strip is coated with a material that will not bond or adhere to the sealant, permitting unrestricted lateral expansion and contraction of the sealant.
Inventors
- 👤 Clarence A Klittich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:36
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C11/106; E01C23/00; E01C23/02; E01C23/021
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
An expansion joint assembly for use between concrete elements comprising an elongated expansion joint strip permanently positioned between the concrete elements, a thin layer of material bonded to the top edge of the expansion joint strip and being substantially nonadherable to a sealant, an elongated topping strip removably attached on the upper surface of the thin bonded layer, the assembly being positioned between the concrete elements with at least most of the topping strip positioned below the upper surface of the concrete elements, whereby removal of the topping strip exposes a controlled depth groove above the thin bonded layer for receiving a sealant which, as it expands and contracts, is unimPeded by contact with the thin bonded layer.
Claim 2
Dependent Claim
118 words
An expansion joint assembly for use between concrete elements comprising an elongated expansion joint strip permanently positioned between the concrete elements, a thin layer of material bonded to the top edge of the expansion joint strip and being substantially nonadherable to a sealant, an elongated topping strip removably attached on the upper surface of the thin bonded layer, the assembly being positioned between the concrete elements with at least most of the topping strip positioned below the upper surface of the concrete elements, whereby removal of the topping strip exposes a controlled depth groove above the thin bonded layer for receiving a sealant which, as it expands and contracts, is unimPeded by contact with the thin bonded layer.
Claim 3
Dependent Claim
19 words
The expansion joint assembly of claim 1 wherein the expansion joint strip and topping strip are of compressed wood.
Claim 4
Dependent Claim
26 words
The expansion joint assembly of claim 1 wherein the fastening means comprises removable rigid elements extending through the topping strip and into the expansion joint strip.
Claim 5
Dependent Claim
13 words
The expansion joint assembly of claim 3 wherein the rigid elements are staples.
Claim 6
Dependent Claim
26 words
The expansion joint assembly of claim 1 wherein the thin layer of material comprises a tape glued to the upper edge of the expansion joint strip.
Claim 7
Dependent Claim
12 words
The expansion joint assembly of claim 5 wherein the tape is ethylene.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |