US3690613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete wall form installation with particular tie rod securing means therefor
Assignee: General Electric Co
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Filing: 1970-10-08
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Granted: 1972-09-12
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Expires: 1990-10-08
Abstract
Abstract Securing means for a concrete wall form including a flat tie rod having means at its end sections for attachment to the form sides so that the medial section of the tie rod spans the form and becomes embedded in the concrete which is poured between the form sides, thus leaving outwardly projecting tie rod end sections. Elongated sleeve cones surround such tie rod end sections and have their inner ends drivingly connected to the same at regions in the immediate vicinity of the tie rod breakbacks, and also have torque-application facilities at their exposed outer ends to that the manual application of torque to the sleeve cones will impart a radial tear or shear effect at the breakbacks to thus free the projecting tie rod end sections.
Inventors
- 👤 James C Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:37
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/07; E04G17/0707; E04G17/0721; E04G2017/0646
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
327 words
A concrete wall form installation comprising, in combination, a form embodying a pair of opposed, vertically disposed, spaced apart sides between which wet concrete is adapted to be poured, each form side including an inside panel and outside panelreinforcing members, and securing means adapted to maintain said form sides in spaced apart relationship and consisting of an elongated flat tie rod formed of flat metal stock, extending horizontally between and through said form sides, and having breakbacks disposed directly inwards of the inside faces of the panels of the form sides and dividing the tie rod into a medial section for embedment in the poured concrete and end sections which project outwardly through and beyond the form sides, a rigid, open-ended, tubular, torque-transmitting sleeve cone slidably and telescopically received over each end section of the tie rod, and extending outwards from the adjacent breakback through and beyond the associated form side, the wall of each tubular sleeve cone being substantially of uniform radial thickness throughout its entire length and the inner region of said sleeve cone being tapered so as to present a frusto-conical inner end region of small slant angle, each tapered inner end region being formed with a pair of diametrically opposite, longitudinally extending, internal spline grooves which are coextensive therewith, have the bottom walls thereof forming extensions of the inside cylindrical surface of the wall of the medial portion of the sleeve cone, are arranged so that they receive therein the opposite longitudinal edges of the adjacent tie rod end section and, in combination with said longitudinal edges, serve to establish a driving connection between the sleeve cone and said adjacent tie rod end section when torque is applied to said sleeve cone in order to effect severance of said adjacent end section of the tie rod from the medial section of the tie rod, and releasable means for fixedly securing the tie rod end sections to the reinforcing mEmbers of the form sides.
Claim 2
Dependent Claim
327 words
A concrete wall form installation comprising, in combination, a form embodying a pair of opposed, vertically disposed, spaced apart sides between which wet concrete is adapted to be poured, each form side including an inside panel and outside panelreinforcing members, and securing means adapted to maintain said form sides in spaced apart relationship and consisting of an elongated flat tie rod formed of flat metal stock, extending horizontally between and through said form sides, and having breakbacks disposed directly inwards of the inside faces of the panels of the form sides and dividing the tie rod into a medial section for embedment in the poured concrete and end sections which project outwardly through and beyond the form sides, a rigid, open-ended, tubular, torque-transmitting sleeve cone slidably and telescopically received over each end section of the tie rod, and extending outwards from the adjacent breakback through and beyond the associated form side, the wall of each tubular sleeve cone being substantially of uniform radial thickness throughout its entire length and the inner region of said sleeve cone being tapered so as to present a frusto-conical inner end region of small slant angle, each tapered inner end region being formed with a pair of diametrically opposite, longitudinally extending, internal spline grooves which are coextensive therewith, have the bottom walls thereof forming extensions of the inside cylindrical surface of the wall of the medial portion of the sleeve cone, are arranged so that they receive therein the opposite longitudinal edges of the adjacent tie rod end section and, in combination with said longitudinal edges, serve to establish a driving connection between the sleeve cone and said adjacent tie rod end section when torque is applied to said sleeve cone in order to effect severance of said adjacent end section of the tie rod from the medial section of the tie rod, and releasable means for fixedly securing the tie rod end sections to the reinforcing mEmbers of the form sides.
Claim 3
Dependent Claim
194 words
A concrete wall form installation as set forth in claim 1 and wherein the outer regions of the end sections of the tie rod have longitudinal slots directly outwards of the outside faces of the reinforcing members of the form sides, the outer open rims of the sleeve cones have pairs of diametrically opposite notches in register with said slots in the outer regions of the tie rod end sections for torque tool-receiving purposes, and the means for releasably securing the tie rod end sections to the reinforcing members of the form sides consists of (a) backing plates which are attached to the outside faces of the reinforcing members, have central holes through which the outer end regions of the end sections of the tie rods extend, and are provided at the side portions thereof with pairs of outwardly extending, spaced apart ears having formed therein slots disposed in register with the aforementioned notches, and (b) wedge bolts which extend through the slots in the outer regions of the tie rod end sections, the notches in the outer open rims of the sleeve cones, and the slots in the ears of said backing plates.
Claim 4
Dependent Claim
62 words
A concrete wall form installation as set forth in claim 2 and wherein the slots in the ears of the backing plates are of different width and the wedge bolts have a certain of their ends enlargements which are incapable of passing through the narrower ones of the last-mentioned slots in order that the wedge bolts are captured by the backing plates.
Claim 5
Dependent Claim
149 words
A concrete wall form installation as set forth in claim 1 and wherein the end sections of the tie rod have formed therein longitudinal slots adjacent to the inside faces of the outside reinforcing members of the form sides, the medial portions of the sleeve cones have formed therein pairs of diametrically opposite, longitudinally extending slots in register with the slots in the tie rod end sections, and the means for releasably securing the tie rod end sections to the reinforcing members of the form sides consist of (a) reaction disks mounted on and fixedly connected to the outer end regions of the sleeve cones and engaging the outside faces of said reinforcing members, and (b) wedges extending through the registering slots in the tie rod end sections and the medial portions of the sleeve cones and engaging the inside faces of the reinforcing members of the form sides.
Claim 6
Dependent Claim
31 words
A concrete wall form installation as set forth in claim 4 and wherein the outer open rims of the sleeve cones have pairs of diametrically opposite notches for torque tool-receiving purposes.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |