US3842552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bridge construction using precast curb and edge beam
Assignee: MATTHEWS C CO
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Filing: 1973-08-30
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Granted: 1974-10-22
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Expires: 1993-08-30
Abstract
Abstract A high type bridge construction produced with a minimum field forming. By utilizing precast elements for the supporting substructure as well as for the interior and exterior beams the field forming is eliminated for these items. The exterior beam is precast with the curbing and includes a dap to receive the edge beam which is also precast and assembled to the dap. The edge beam is cast low enough so that it stops surfaces below the top of the poured slab allowing the slab to be continuous to its end. Angles are secured to the top of the precast edge beam to serve as the end form of the slab. The precast exterior and interior beams include a longitudinal edge which supports a metal form and which is held in place.
Inventors
- 👤 W Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:11
CPC Classifications
E; E01; E01D; E01D21/00; E01D2/00; E01D2101/00; E01D2101/20; E01D2101/24; E01D2101/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
In a bridge construction: a. a bridge support substructure to elevate the bridge, b. a transverse bridge support structure extending transversely across the substructure, c. a precast exterior beam on one side of said bridge extending longitudinally therealong and including a precast curb and a projecting ledge to support a concrete slab to be poured thereon, d. an interior beam extending parallel to and co-extensively with said exterior beam and having a ledge precast thereon and extending longitudinally along the edge thereof and offset portions on each end, e. a transverse precast edge beam positioned in the offset portions of said exterior beam and interior beaM and having an upstanding edge therewith to determine the edge of the concrete slab poured therein, f. there being precast edge beams spaced from each other on opposite ends of said exterior and interior beams to define a space for the slab, and g. a slab form positioned on the ledges defined by said exterior beam, said interior beam and said precast edge beams.
Claim 2
Dependent Claim
170 words
In a bridge construction: a. a bridge support substructure to elevate the bridge, b. a transverse bridge support structure extending transversely across the substructure, c. a precast exterior beam on one side of said bridge extending longitudinally therealong and including a precast curb and a projecting ledge to support a concrete slab to be poured thereon, d. an interior beam extending parallel to and co-extensively with said exterior beam and having a ledge precast thereon and extending longitudinally along the edge thereof and offset portions on each end, e. a transverse precast edge beam positioned in the offset portions of said exterior beam and interior beaM and having an upstanding edge therewith to determine the edge of the concrete slab poured therein, f. there being precast edge beams spaced from each other on opposite ends of said exterior and interior beams to define a space for the slab, and g. a slab form positioned on the ledges defined by said exterior beam, said interior beam and said precast edge beams.
Claim 3
Dependent Claim
17 words
The device claimed in claim 1 wherein said interior beam includes offset ledges on opposite sides thereof.
Claim 4
Dependent Claim
33 words
The device claimed in claim 1 wherein there is an additional longitudinal support between said exterior beam and said interior beam and said additional support being supported on said substructure beneath said slab.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |