US3866384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming crack control slots
Assignee: HARRY A PETERSON Co Inc
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Filing: 1972-09-25
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Granted: 1975-02-18
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Expires: 1992-09-25
Abstract
Abstract A method of forming and sealing crack control slots in concrete slabs including the major steps of forming a V-shaped crack control slot in the concrete when in the plastic state, dressing the groove using a carbide wheel having a V-shaped peripheral working edge, and sealing the groove using a backer cord and a plastic sealant. Preforming the slots in the V-shape tends to maintain the shape of the dressing wheel during the dressing operation for a substantially extended period.
Inventors
- 👤 Jr Harry S Peterson
- 👤 Charles M Peterson
- 👤 Iii Robert King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:11
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/10; E01C23/00; E01C23/02; E01C23/025; E01C23/026
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
A METHOD OF PRODUCING A CONCRETE TOPPING STRUCTURE DISPOSED OVER A FOUNDATION AND HAVING AT LEAST ONE SEALED CRACK CONTROL SLOT FORMED THEREIN AND COMPRISING THE STEPS OF: A. CASTING A TOPPING LAYER OF CONCRETE OVER A SUITABLE FONDATION; B. FORMING BY TOOLING A V-SHAPED SLOT IN AND ACROSS THE EXPOSED SURFACE OF THE TOPPING LAYER WHICH THE CONCRETE OF SAID LAYER IS IN THE UNSET PLASTIC STATE; C. PERMITTING THE TOPPING LAYER TO SUBSTANTIALLY CURE WITH THE V-SHAPED SLOT FORMED THEREIN; D. DRESSING THE WALLS OF THE SLOT WITH A ROTARY ABRADING APPARATUS WHICH CONFORMS TO THE CONFIGURATION OF THE SLOT TO REMOVE LAITANCE AND WEAK CONCRETE FROM THE SLOT WHILE PRESERVING THE TOOLED CONFIGURATION THEREOF, AND E. THEREAFTER SEALING THE SLOT BY FILLING AT LEAST A PORTION OF THE SLOT WITH A CURABLE FLEXIBLE POLYMERIC SEALANT MATERIAL WHICH, WHEN CURED, REMAINS FLEXIBLE AND WHICH ADHERES TO THE DRESSED CONCRETE WALLS OF THE SLOT.
Claim 2
Independent Claim
155 words
A METHOD OF PRODUCING A CONCRETE TOPPING STRUCTURE DISPOSED OVER A FOUNDATION AND HAVING AT LEAST ONE SEALED CRACK CONTROL SLOT FORMED THEREIN AND COMPRISING THE STEPS OF: A. CASTING A TOPPING LAYER OF CONCRETE OVER A SUITABLE FONDATION; B. FORMING BY TOOLING A V-SHAPED SLOT IN AND ACROSS THE EXPOSED SURFACE OF THE TOPPING LAYER WHICH THE CONCRETE OF SAID LAYER IS IN THE UNSET PLASTIC STATE; C. PERMITTING THE TOPPING LAYER TO SUBSTANTIALLY CURE WITH THE V-SHAPED SLOT FORMED THEREIN; D. DRESSING THE WALLS OF THE SLOT WITH A ROTARY ABRADING APPARATUS WHICH CONFORMS TO THE CONFIGURATION OF THE SLOT TO REMOVE LAITANCE AND WEAK CONCRETE FROM THE SLOT WHILE PRESERVING THE TOOLED CONFIGURATION THEREOF, AND E. THEREAFTER SEALING THE SLOT BY FILLING AT LEAST A PORTION OF THE SLOT WITH A CURABLE FLEXIBLE POLYMERIC SEALANT MATERIAL WHICH, WHEN CURED, REMAINS FLEXIBLE AND WHICH ADHERES TO THE DRESSED CONCRETE WALLS OF THE SLOT.
Claim 3
Dependent Claim
54 words
The method defined in claim 1 wherein the rotary apparatus comprises a dressing wheel haviNg a compound beveled peripheral edge which substantially conforms to the tooled configuration of the slot such that the peripheral bevels of the dressing wheel are in full facial contract with the walls of the slot during the dressing operation.
Claim 4
Dependent Claim
55 words
The method defined in claim 1 wherein the step of sealing the slot comprises the additional step of placing a filler cord in the dressed and cured slot prior to filling the slot with the curable flexible polymeric sealant whereby the sealant, when cured, is substantially flush with the exposed surface of the topping layer.
Claim 5
Dependent Claim
33 words
The method defined in claim 7 wherein the foundation comprises at least two precast concrete members defining a joint therebetween, the slot being formed directly over and in substantial alignment with said joint.
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |