Patent CH57434A successfully refreshed from Google Patents.
Patent US3585771A successfully refreshed from Google Patents.
US3585771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting precast concrete structural members
Assignee: Individual
•
Filing: 1969-05-19
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Granted: 1971-06-22
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Expires: 1989-05-19
Abstract
Abstract This invention is directed to a connection assembly for joining precast structural members together wherein metal members are provided on the structural members and which are attached to reinforcements in the said structural members, said metal members having taper formations thereon engaging corresponding formations in end clamp members adapted to be drawn together to effect engagement of outer faces of the metal members with a central shaft passing through the connection assembly and cooperating with the end clamp members, the arrangement providing for a column supported or unsupported connection through which the whole of the moment forces are transferred.
Inventors
- 👤 Stewart George Pinniger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:07
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/18; E04B1/20; E04B1/21; E04B1/215
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
A connection assembly for concrete precast structural members comprising a. metal sections positioned at the adjoining ends of at least two structural members and rigidly secured thereto, said metal sections extending substantially through said structural members and being formed with tapered end portions, b. clamp members adapted to be disposed over said tapered end portions of said metal sections, said clamp members being formed with tapered portions corresponding to said tapered end portions of said metal sections and adapted to engage the same when the structural members are clamped together, c. a clamp shaft passing through the assembly between said metal sections and contiguous thereto throughout at least a substantial portion of the length of said shaft, said shaft having opposed ends extending beyond said clamp members, and d. means associated with the opposed ends of said shaft for clamping said clamp members to said metal sections to draw the same together thereby effecting locking engagement of the outer surfaces of said metal sections to said clamp shaft.
Claim 2
Dependent Claim
168 words
A connection assembly for concrete precast structural members comprising a. metal sections positioned at the adjoining ends of at least two structural members and rigidly secured thereto, said metal sections extending substantially through said structural members and being formed with tapered end portions, b. clamp members adapted to be disposed over said tapered end portions of said metal sections, said clamp members being formed with tapered portions corresponding to said tapered end portions of said metal sections and adapted to engage the same when the structural members are clamped together, c. a clamp shaft passing through the assembly between said metal sections and contiguous thereto throughout at least a substantial portion of the length of said shaft, said shaft having opposed ends extending beyond said clamp members, and d. means associated with the opposed ends of said shaft for clamping said clamp members to said metal sections to draw the same together thereby effecting locking engagement of the outer surfaces of said metal sections to said clamp shaft.
Claim 3
Dependent Claim
47 words
The connection assembly of claim 1 wherein at least one of the clamp members is provided with an opening through which the clamp shaft passes and a thread on at least one end of the clamp shaft to receive a nut for drawing the clamp members together.
Claim 4
Dependent Claim
56 words
The connection assembly of claim 2 wherein the end clamp members have recesses therein to receive and engage matching formations on the metal sections and with the engaging surfaces on the clamp members metal sections being inclined to the direction of clamping pressure so as to effect engagement of the metal sections and the clamp shaft.
Claim 5
Dependent Claim
28 words
The connection assembly of claim 1 wherein the outer surfaces of the metal sections are formed as segments of a shape to engage that of the clamp shaft.
Claim 6
Dependent Claim
42 words
The connection assembly of claim 1 for providing a connection of at least one beam to a supporting column including column reinforcements wherein one clamp member is fixed to the column reinforcements and the clamp shaft is attached to the column reinforcements.
Claim 7
Dependent Claim
29 words
The connection assembly of claim 5 wherein the clamp shaft is indirectly attached to the column reinforcements by being fixed to the clamp member attached to said column reinforcements.
Claim 8
Dependent Claim
31 words
The connection assembly of claim 5 wherein the one clamp member is welded to the column reinforcements and the clamp shaft is bolted to a securing plate welded to said reinforcements.
Claim 9
Dependent Claim
64 words
The connection assembly of claim 5 wherein the one clamp member is provided with recessed apertures to receive anchored ends of the column reinforcements and the said clamp member is provided with a tapered recess to receive a correspondingly tapered shoulder end on the clamp shaft which is secured to said clamp member by a nut on a threaded extension in the clamp shaft.
Claim 10
Dependent Claim
50 words
The connection assembly of claim 1 wherein the metal sections are provided with recessed apertures in which prestressed reinforcements are anchored, said metal sections being provided with reinforcing shoulders to spread compressive forces due to tensioning and subsequent loading and to resist bending movements within the length of the section.
Claim 11
Dependent Claim
24 words
The connection assembly of claim 1 further including reinforcement members in said structural members, said metal sections being rigidly secured to said reinforcement members.
References Cited (Backward Citations)
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Cited
GB111557A
Cited
US2587724A
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |