US3801061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form panel with grouting plug core
Assignee: Burke Concrete Accessories
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Filing: 1971-07-02
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Granted: 1974-04-02
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Expires: 1991-07-02
Abstract
Abstract An apparatus and method for constructing a concrete form comprised of a pair of form panels arranged in opposed spaced relationship and secured against movement relative to each other by tie rods extending therebetween. The apparatus comprises conical grouting cores secured to the panels independently of the rods to slidably receive the rods and permit their extension through the panels from the outer side of one of the panels, and waler brackets mounted on each of the panels for selective gripping engagement with the ends of the rods to prevent movement of the panels toward and away from each other. The brackets are provided with hinged jaw-like elements which are movable to effect selective engagement and disengagement of the brackets with the rods. When disengaged, these elements permit free slidable movement of the rods relative to the brackets. The method is directed to the construction of a concrete form by a ''''feed through system'''' wherein tie rods are fed through a pair of opposed panels and grouting cores secured thereto from the outer side of one of the panels. In the method, once the rods are fed through the panels, they are secured against axial movement relative thereto to maintain the panels in opposed spaced relationship. In an alternative embodiment, the apparatus and method is concerned with an arrangement wherein bushing inserts are secured to the panels in place of the conical grouting cores and cores or other sealing elements carried by the tie rods are cooperable with these inserts.
Inventors
- 👤 J Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:04
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/07; E04G17/0707; E04G17/0721
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
246 words
A grouting plug core for use in combination with a form comprising: A. a form panel having an interior surface against which concrete is formed and an aperture therein for the passage of a tie rod therethrough; B. a tie rod extending through said aperture; and, C. gripping means mounted to said panel for selective engagement with said rod to lock said panel against axial movement relative to said rod; said core comprising: 1. a truncated conical body having: a. a substantially planar base surface adapted to seat against the interior surface of said panel and over the aperture therein with the body extending outwardly from said iNterior surface, said base surface having an area greater than the transverse cross sectional area of said aperture and said body converging uniformily from said base surface to define a smooth conical exterior surface; and, b. a passage extending generally axially therethrough, said passage being adapted to have said rod passed therethrough upon seating of said surface against said panel and over the aperture therein; 2. dowel means secured against axial movement relative to said body and extending laterally from the base surface thereof, said means being receivable in the aperture of said panel to maintain said surface in an aligned position covering said aperture and being adapted to have said rod passed therethrough; and, 3. retention means adapted to secure said dowel means against axial movement relative to the panel and in received condition within the aperture therein.
Claim 2
Dependent Claim
246 words
A grouting plug core for use in combination with a form comprising: A. a form panel having an interior surface against which concrete is formed and an aperture therein for the passage of a tie rod therethrough; B. a tie rod extending through said aperture; and, C. gripping means mounted to said panel for selective engagement with said rod to lock said panel against axial movement relative to said rod; said core comprising: 1. a truncated conical body having: a. a substantially planar base surface adapted to seat against the interior surface of said panel and over the aperture therein with the body extending outwardly from said iNterior surface, said base surface having an area greater than the transverse cross sectional area of said aperture and said body converging uniformily from said base surface to define a smooth conical exterior surface; and, b. a passage extending generally axially therethrough, said passage being adapted to have said rod passed therethrough upon seating of said surface against said panel and over the aperture therein; 2. dowel means secured against axial movement relative to said body and extending laterally from the base surface thereof, said means being receivable in the aperture of said panel to maintain said surface in an aligned position covering said aperture and being adapted to have said rod passed therethrough; and, 3. retention means adapted to secure said dowel means against axial movement relative to the panel and in received condition within the aperture therein.
Claim 3
Dependent Claim
62 words
A grouting plug core according to claim 1, wherein: A. said dowel means comprises a tubular section formed integrally and in substantially axial alignment with said body; and, B. said retention means comprises a screw threaded surface formed on and externally of said tubular section for gripping engagement with the internal surface of an aperture within which said dowel means is received.
Claim 4
Dependent Claim
75 words
a passage extending therethrough, said passage being adapted to have the rod passed therethrough upon seating of said base surface against the panel and over the aperture therein; B. a dowel formed integrally with said body and extending laterally from the base surface thereof, said dowel having screw threads on the external surface thereof for self-threading engagement with the aperture in the form panel to draw the base surface into seated engagement with the panel.
Claim 5
Dependent Claim
75 words
a passage extending therethrough, said passage being adapted to have the rod passed therethrough upon seating of said base surface against the panel and over the aperture therein; B. a dowel formed integrally with said body and extending laterally from the base surface thereof, said dowel having screw threads on the external surface thereof for self-threading engagement with the aperture in the form panel to draw the base surface into seated engagement with the panel.
Claim 6
Dependent Claim
49 words
dowel means secured against axial movement relative to said body and extending laterally from the base surface thereof, said means being receivable in the aperture of said panel to maintain said surface in an aligned position covering said aperture and being adapted to have said rod passed therethrough; and,
Claim 7
Dependent Claim
49 words
dowel means secured against axial movement relative to said body and extending laterally from the base surface thereof, said means being receivable in the aperture of said panel to maintain said surface in an aligned position covering said aperture and being adapted to have said rod passed therethrough; and,
Claim 8
Dependent Claim
48 words
A grouting plug core according to claim 2, further comprising wrench engageable means operatively associated with said dowel means to provide for the turning thereof with a wrench to selectively thread said screw threaded surface into and out of gripping engagement with the internal surface of an aperture.
Claim 9
Dependent Claim
23 words
retention means adapted to secure said dowel means against axial movement relative to the panel and in received condition within the aperture therein.
Claim 10
Dependent Claim
23 words
retention means adapted to secure said dowel means against axial movement relative to the panel and in received condition within the aperture therein.
Claim 11
Dependent Claim
38 words
A grouting plug core for use in combination with a plywood form panel having an interior surface against which concrete is formed and a tie rod aperture extending therethrough, said core comprising: A. a truncated conical body having:
Claim 12
Dependent Claim
38 words
A grouting plug core for use in combination with a plywood form panel having an interior surface against which concrete is formed and a tie rod aperture extending therethrough, said core comprising: A. a truncated conical body having:
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |