US3736716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for reducing slippage of steel beam relative to concrete slab
Assignee: LONG SPAN BRIDGE CONSULTANTS I
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Filing: 1971-04-07
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Granted: 1973-06-05
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Expires: 1991-04-07
Abstract
Abstract A slip-preventive means to prevent a steel beam from slipping relative to a concrete slab in a bridge or the like structure, which includes one or more ribs welded to the upper flange of the steel beam, the ribs being connected to reinforcing iron bars in the concrete slab.
Inventors
- 👤 A Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:29
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/17; E04B5/23; E04B5/29
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
Slip preventive means for reducing undesired movement between structure steel beams and a concrete structure which the beams support, comprising a structural beam including a central web portion and a perpendicular flange portion, first and second longitudinal extending spaced parallel rib members affixed to said flange, each rib including means defining a plurality of spaced openings extending through each of said ribs, said openings in said first and second ribs arranged along a mutual alignment axis, said axis extending parallel to said flange and perpendicular to the longitudinal axis of said beam, and metal rods constituting a portion of the reinforcing system of the concrete structure extending through at least one selected aligned pair of openings in said rib members whereby to impede undesired slip between said concrete structure and said structural beam.
Claim 2
Dependent Claim
133 words
Slip preventive means for reducing undesired movement between structure steel beams and a concrete structure which the beams support, comprising a structural beam including a central web portion and a perpendicular flange portion, first and second longitudinal extending spaced parallel rib members affixed to said flange, each rib including means defining a plurality of spaced openings extending through each of said ribs, said openings in said first and second ribs arranged along a mutual alignment axis, said axis extending parallel to said flange and perpendicular to the longitudinal axis of said beam, and metal rods constituting a portion of the reinforcing system of the concrete structure extending through at least one selected aligned pair of openings in said rib members whereby to impede undesired slip between said concrete structure and said structural beam.
Claim 3
Dependent Claim
22 words
A slip-preventive means as claimed in claim 1 in which the ribs have open notches for receiving the reinforcing iron bars therein.
Claim 4
Dependent Claim
33 words
A slip-preventive means as claimed in claim 1 in which there are at least two steel beams and said iron bars extend between and are connected to the ribs of each respective beam.
Claim 5
Dependent Claim
41 words
A slip-preventive means as claimed in claim 3 in which the ribs have holes for passing the reinforcing iron bars therethrough, the holes being in registry such that each registered set on two respective beams will receive one continuous iron bar.
Claim 6
Dependent Claim
25 words
A slip-preventive means as claimed in claim 4 in which each set of registered holes retains two reinforcing iron bars, one positioned above the other.
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |