US3705776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for slip-forming
Assignee: Individual
•
Filing: 1970-12-09
•
Granted: 1972-12-12
•
Expires: 1990-12-09
Abstract
Abstract A mold assembly used in the construction of concrete walls and including two leg members carrying opposing spaced form panels within which concrete is poured. Thinner walls may now be erected by alternately (instead of synchronously) raising the form panels. Jacks operating on transversely extending cross-members secured to the leg members cooperate with gripping members climbing along the vertical rod extending in the concrete to alternately raise the two form panels.
Inventors
- 👤 Rolf Anders Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:11
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A mold assembly for use in casting a concrete wall structure comprising a frame consisting of two leg members; first and second opposing spaced Form panels carried respectively by each leg member for containing concrete therewithin; a plurality of vertically-spaced cross-members mounted on said legs, each cross-member alternately having one end thereof rigidly secured to one of said leg member and having the other end slidably receiving the other leg member; a pair of climb members mounted on respective cross-members and each provided with grip means for gripping a vertical rod fixed in the concrete; and at least two vertically disposed jacking members, the opposite ends of each jacking member resting against successive vertically-spaced cross-members whereby the alternate actuation of the jacking member will cause the alternate raising of the form panels along the set concrete.
Claim 2
Dependent Claim
136 words
A mold assembly for use in casting a concrete wall structure comprising a frame consisting of two leg members; first and second opposing spaced Form panels carried respectively by each leg member for containing concrete therewithin; a plurality of vertically-spaced cross-members mounted on said legs, each cross-member alternately having one end thereof rigidly secured to one of said leg member and having the other end slidably receiving the other leg member; a pair of climb members mounted on respective cross-members and each provided with grip means for gripping a vertical rod fixed in the concrete; and at least two vertically disposed jacking members, the opposite ends of each jacking member resting against successive vertically-spaced cross-members whereby the alternate actuation of the jacking member will cause the alternate raising of the form panels along the set concrete.
Claim 3
Dependent Claim
45 words
A mold assembly as defined in claim 1 wherein said plurality of cross-members consists of three T-shaped members, each being made up of a pair of two U-shaped channel irons, the pair of T-shaped cross-members being connected at their ends in an opposing spaced relationship.
Claim 4
Dependent Claim
68 words
A mold assembly as defined in claim 2 wherein one jacking member has its opposite ends resting between a channel iron of a first pair of cross-members and a channel iron of a second pair of cross-members and wherein the other jacking member has its opposite ends resting between a channel iron of the second pair of cross-members and a channel iron of a third pair of cross-members.
Claim 5
Dependent Claim
18 words
A mold assembly as defined in claim 3 further comprising pumping means for alternately actuating said jacking members.
Claim 6
Dependent Claim
27 words
A mold assembly as defined in claim 4 wherein said leg members include means for fixedly attaching a working deck to facilitate the pouring of the concrete.
References Cited (Backward Citations)
US3252199A
Cited
US3552709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |