US3693928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete wall form with adjustable bulkhead
Assignee: General Electric Co
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Filing: 1970-11-04
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Granted: 1972-09-26
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Expires: 1990-11-04
Abstract
Abstract A concrete wall form having an adjustable bulkhead in which a variety of bulkhead components cooperate with one another in sealing relationship to exclude the passage of concrete past any reinforcing rods, water seals, conduits or other residual concrete-embedded members which traverse or bridge the interfacial surfaces between adjacent concrete pourings.
Inventors
- 👤 James C Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:19
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/365; E04G21/00; E04G21/12; E04G21/125
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
In a concrete form including a horizontal pouring deck, a pair of upstanding opposed form sides and a horizontal reinforcing rod disposed between said sides and extending longitudinally of the form, a bulkhead mounted on said deck, bridging the distance between said form sides, and adapted for interim end sealing during the interval between successive concrete pouring operations, said bulkhead comprising a plurality of bulkhead components disposed in edge-to-edge relationship, each component being in the form of an elongated wooden beam, the opposed edges of one pair of adjacent beams being reinforced by coextensive steel members which are fixed thereto, said members having effectively and coextensively adhered thereto a pair of resilient elastomeric sealing strips which make coextensive sealing contact with each other and thus define an interfacial sealing area therebetween, said reinforcing rod projecting through said sealing area and displacing the elastomeric material of the strips so that the latter closely hug the rod in sealing relationship.
Claim 2
Dependent Claim
158 words
In a concrete form including a horizontal pouring deck, a pair of upstanding opposed form sides and a horizontal reinforcing rod disposed between said sides and extending longitudinally of the form, a bulkhead mounted on said deck, bridging the distance between said form sides, and adapted for interim end sealing during the interval between successive concrete pouring operations, said bulkhead comprising a plurality of bulkhead components disposed in edge-to-edge relationship, each component being in the form of an elongated wooden beam, the opposed edges of one pair of adjacent beams being reinforced by coextensive steel members which are fixed thereto, said members having effectively and coextensively adhered thereto a pair of resilient elastomeric sealing strips which make coextensive sealing contact with each other and thus define an interfacial sealing area therebetween, said reinforcing rod projecting through said sealing area and displacing the elastomeric material of the strips so that the latter closely hug the rod in sealing relationship.
Claim 3
Dependent Claim
33 words
In a concrete form, the combination set forth in claim 1 and wherein the steel members are provided with web-like portions, and the seAling strips are adhered to said web-like portions by an
Claim 4
Dependent Claim
51 words
In a concrete form, the combination set forth in claim 4 and wherein the sealing strips are of symmetrical trapezoidal configuration in transverse cross section with the large bases of the strips adhered to the web portions of the steel members and the small bases thereof disposed in abutting sealing relationship.
Claim 5
Dependent Claim
123 words
In a concrete form, the combination set forth in claim 1 and wherein the opposed edge regions of a second pair of adjacent beams likewise have effectively and coextensively adhered thereto a pair of resilient elastomeric sealing strips which make coextensive sealing contact with each other and thus define a second interfacial sealing area therebetween, the combination further including a flat sheet-like water seal projecting into said second interfacial sealing area and effectively retained in position by the pressure of the sealing strips of said second pair of adjacent sealing strips on opposite sides thereof, and said water seal being of full concrete pouring height and having a portion thereof projecting outwardly from said sealing area for embedment in a first concrete pour.
Claim 6
Dependent Claim
155 words
In a concrete form, the combination set forth in claim 2 and wherein the opposed edge regions of a second pair of adjacent beams likewise have effectively and coextensively adhered thereto a pair of resilient elastomeric sealing strips which make coextensive sealing contact with each other and thus define a second interfacial sealing area therebetween, said latter pair of sealing strips having portions thereof projecting laterally beyond the confines of the associated beams and, in combination with each other, defining a keyway-forming pattern by means of which successive concrete pourings are keyed to each other, the combination further including a flat sheet-like water seal projecting into said second interfacial sealing area and effectively retained in position by the pressure of the sealing strips of said second pair of adjacent sealing strips on opposite sides thereof, said water seal having a portion thereof projecting outwardly from said sealing area for embedment in a first concrete pour.
Claim 7
Dependent Claim
35 words
In a concrete form, the combination set forth in claim 2 and wherein said steel members are in the form of structural channels having side flanges which straddle the opposed edges of the adjacent beams.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |