Patent US4247073A successfully refreshed from Google Patents.
US4247073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form tie assemblies
Assignee: Individual
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Filing: 1978-11-02
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Granted: 1981-01-27
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Expires: 1998-11-02
Abstract
Abstract A tie assembly for use in removably supporting plywood sheets or other wall defining materials in fixed spaced relationship to define a form into which concrete may be poured to form a portion of a structure. The tie assembly so operates that portions thereof not embedded in the concrete may be removed for future use after the concrete has set. The plywood sheets after removal and recovery of the outwardly disposed portions of the assembly may be separated from the set concrete wall. The tie assembly is adapted for use with forms defined by new plywood sheets, or forms in which previously used plywood sheets are employed that have bolt holes of relatively large diameter therein.
Inventors
- 👤 Mike Vario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:47
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/07; E04G17/0707; E04G17/0721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
495 words
In combination with a concrete receiving form that includes two laterally spaced, reinforced plywood sheets that have been previously used in defining a form and that have a pair of transversely aligned bolt holes therein that previously received a relatively large diameter bolt, a device for removably maintaining said sheets in fixed relationship with one another to again define a concrete receiving form using said pair of aligned bolt holes, said device including: a. a metallic rod of substantially greater length than the distance between said plywood sheets, said rod having oppositely disposed end portions that extend through said pair of bolt holes and outwardly therefrom; b. two longitudinally spaced first stops secured to said rod and inwardly from said ends thereof, said stops of less transverse cross sectional area than that of said bolt holes, said stops adjacent interior surfaces of said two plywood sheets; c. a pair of rigid washers of greater transverse area than that of said bolt holes, said washers having L-shaped slots therein that slidably engage said rod, said washers when so engaged transversely supported on said rod, with each of said supported washers disposed between one of said first stops and said plywood sheet most adjacent thereto to prevent said first stops being drawn into said bolt holes when said pair of wedges are moved downwardly relative to said rod; d. a pair of second stops secured to said ends of said rod, said second stops having a transverse area that is less than that of said bores; and e. a pair of rigid wedges, each of said wedges including an elongate flat vertically positionable first edge surface and a second upwardly and outwardly extending second edge surface, and a transverse opening of inverted keyhole shape that extends between said first and second edge surfaces, said opening including a first portion through which one of said second stops and a section of said rod adjacent thereto can be moved and a second elongate portion that extends upwardly from said first portion, said second portion having a width greater than the diameter of said rod but less then the diameter of said second stop, said wedges when driven downwardly having said rod sections enter said second opening portions as said second stops slide upwardly on said second end surfaces to force said wedges towards one another, with each of said wedges cooperating with said first stop and the one of said washers most adjacent thereto to grip one of said plywood sheets therebetween and said two plywood sheets being held in fixed lateral spacing to permit fluid concrete to be poured therebetween, said wedges capable of being removed from said rods after said concrete has set by driving said wedges upwardly to dispose said rod sections in said first opening portions, and said wedges then being movable outwardly from said rods together with said plywood sheets for reuse in providing another form to receive concrete to define a concrete wall.
Claim 2
Dependent Claim
495 words
In combination with a concrete receiving form that includes two laterally spaced, reinforced plywood sheets that have been previously used in defining a form and that have a pair of transversely aligned bolt holes therein that previously received a relatively large diameter bolt, a device for removably maintaining said sheets in fixed relationship with one another to again define a concrete receiving form using said pair of aligned bolt holes, said device including: a. a metallic rod of substantially greater length than the distance between said plywood sheets, said rod having oppositely disposed end portions that extend through said pair of bolt holes and outwardly therefrom; b. two longitudinally spaced first stops secured to said rod and inwardly from said ends thereof, said stops of less transverse cross sectional area than that of said bolt holes, said stops adjacent interior surfaces of said two plywood sheets; c. a pair of rigid washers of greater transverse area than that of said bolt holes, said washers having L-shaped slots therein that slidably engage said rod, said washers when so engaged transversely supported on said rod, with each of said supported washers disposed between one of said first stops and said plywood sheet most adjacent thereto to prevent said first stops being drawn into said bolt holes when said pair of wedges are moved downwardly relative to said rod; d. a pair of second stops secured to said ends of said rod, said second stops having a transverse area that is less than that of said bores; and e. a pair of rigid wedges, each of said wedges including an elongate flat vertically positionable first edge surface and a second upwardly and outwardly extending second edge surface, and a transverse opening of inverted keyhole shape that extends between said first and second edge surfaces, said opening including a first portion through which one of said second stops and a section of said rod adjacent thereto can be moved and a second elongate portion that extends upwardly from said first portion, said second portion having a width greater than the diameter of said rod but less then the diameter of said second stop, said wedges when driven downwardly having said rod sections enter said second opening portions as said second stops slide upwardly on said second end surfaces to force said wedges towards one another, with each of said wedges cooperating with said first stop and the one of said washers most adjacent thereto to grip one of said plywood sheets therebetween and said two plywood sheets being held in fixed lateral spacing to permit fluid concrete to be poured therebetween, said wedges capable of being removed from said rods after said concrete has set by driving said wedges upwardly to dispose said rod sections in said first opening portions, and said wedges then being movable outwardly from said rods together with said plywood sheets for reuse in providing another form to receive concrete to define a concrete wall.
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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |