US3743232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form
Assignee: BOWERMAN BROS Inc
•
Filing: 1971-07-12
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Granted: 1973-07-03
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Expires: 1991-07-12
Abstract
Abstract A form for casting concrete which has a pair of spaced walls formed of panels arranged in multiples along each side wall of the form, the panels of each side being attached together in edge to edge relation so that a large unit is formed with the opposite gangs of panels also so arranged that both of the spaced gangs may be lifted at one time by a crane to be moved from one location to another. The walls are connected together at their upper portion by a means which enables the moving of the walls at their upper portion toward or from each other, the movement toward each other placing them in a desired position for pouring the concrete while the movement away from each other breaks them away from the cast and hardened concrete for movement to another location.
Inventors
- 👤 H Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:08
CPC Classifications
E; E04; E04G; E04G19/00; E04G19/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collaRs, means to tie said panels to each other, connecting means to extend between the collars comprising a bar pivoted to one collar and extending toward the other collar, a crank pivoted to said other collar and receiving in pivotal relationship the bar, said crank in one position drawing the rollers together and in the other position separating them.
Claim 2
Dependent Claim
85 words
A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collaRs, means to tie said panels to each other, connecting means to extend between the collars comprising a bar pivoted to one collar and extending toward the other collar, a crank pivoted to said other collar and receiving in pivotal relationship the bar, said crank in one position drawing the rollers together and in the other position separating them.
Claim 3
Dependent Claim
106 words
A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collars, means to tie said panels to each other, connecting means to extend between the collars comprising ears on one collar, a bar pivoted to said ear and extending toward the other collar, a member rockably secured to the other collar on one axis and pivotally secured to said bar on an axis spaced from the first said axis and means to move said member about the first axis to separate the collars or draw the collars toward each other.
Claim 4
Dependent Claim
106 words
A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collars, means to tie said panels to each other, connecting means to extend between the collars comprising ears on one collar, a bar pivoted to said ear and extending toward the other collar, a member rockably secured to the other collar on one axis and pivotally secured to said bar on an axis spaced from the first said axis and means to move said member about the first axis to separate the collars or draw the collars toward each other.
Claim 5
Dependent Claim
33 words
A concrete form as in claim 2 wherein means are attached to said ear and said member for lifting the pair of collars and the panels from one position to another in unison.
Claim 6
Dependent Claim
21 words
A concrete form as in claim 2 wherein said bar is adjustable to space said collars different distances from each other.
Claim 7
Dependent Claim
25 words
A concrete form as in claim 2 wherein means are provided for securing said member in position to hold the collars contracted toward each other.
References Cited (Backward Citations)
US3497579A
Cited
US3595514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |