Patent US3559541A successfully refreshed from Google Patents.
US3559541A
Expired / Lapsed
US
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Concrete joint load transfer device
Assignee: Individual
•
Filing: 1969-07-08
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Granted: 1971-02-02
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Expires: 1989-07-08
Abstract
Abstract Disclosed herein is a concrete joint load transfer device including a first rectangular member, a second rectangular member telescopically positioned within the first member and at least one suspension element connected to opposite walls of said first and second members respectively, with the first and second members set in concrete slabs separated by an expansion joint.
Inventors
- 👤 David Watstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:47
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/14
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
84 words
A load transfer device for concrete slabs connected by an expansion joint including: a. A first hollow member; b. A second hollow member telescopically extending at least partially within said first member; and c. At least one suspension element connected to the inside of said first member, extending through an opening in a wall portion of said second member and connected to a wall portion of said second member remote from said first named wall portion of said second member on the Inside thereof.
Claim 2
Dependent Claim
84 words
A load transfer device for concrete slabs connected by an expansion joint including: a. A first hollow member; b. A second hollow member telescopically extending at least partially within said first member; and c. At least one suspension element connected to the inside of said first member, extending through an opening in a wall portion of said second member and connected to a wall portion of said second member remote from said first named wall portion of said second member on the Inside thereof.
Claim 3
Dependent Claim
34 words
A device according to claim 1 wherein at least said second member is rectangular in cross section and said opening containing wall portion and said remote wall portion are opposite walls of said rectangle.
Claim 4
Dependent Claim
13 words
A device according to claim 1 wherein both said hollow members are rectangular.
Claim 5
Dependent Claim
22 words
A device according to claim 1 wherein the ends of said hollow members furthest from each other are covered with a screen.
Claim 6
Dependent Claim
21 words
A device according to claim 1, wherein said suspension element is substantially perpendicular to the longitudinal axis of said hollow members.
Claim 7
Dependent Claim
46 words
A device according to claim 1 wherein said first member is embedded in one concrete slab and a portion of said second member extending out of said first member is embedded in a second concrete slab with said slabs spaced apart to form an expansion joint.
Claim 8
Dependent Claim
33 words
A device according to claim 1 wherein said second member does not extend completely through said first member in one direction, but does extend completely through said first member in the opposite direction.
Claim 9
Dependent Claim
42 words
A device according to claim 1 wherein said second member has a solid portion with the hollow part of said second member at least partially telescoping within said first member and said solid portion at least partially extending outside said first member.
Claim 10
Dependent Claim
58 words
A device according to claim 6 wherein there is a plurality of such load transfer devices between said concrete slabs and said one slab having embedded therein alternatively, said first member and said portion of said second member, said second slab having embedded therein the other of said first member and said portion of said second member alternatively.
Claim 11
Dependent Claim
64 words
A device according to claim 6 wherein there are a plurality of such load transfer devices between said concrete slabs with substantially all said first member embedded in said first slab with the vertical relation of the connection between said element and said first member and the connection between said element and said opposite wall of said second member being reversed in alternative devices.
Claim 12
Dependent Claim
15 words
A device according to claim 1 wherein there are a plurality of said suspension elements.
Claim 13
Dependent Claim
36 words
A device according to claim 11 wherein certain of said elements extend through opposite wall portions of said second member and are connected to opposite inside areas of said first member from other of said elements.
Claim 14
Dependent Claim
14 words
A device according to claim 12 wherein said members are rectangular in cross sections.
Claim 15
Dependent Claim
23 words
A device according to claim 12 wherein said elements are alternatively connected to one wall portion and extending through said one wall portion.
Claim 16
Dependent Claim
58 words
A device according to claim 14 wherein said second member is rectangular in cross section and certain of said elements are connected to one wall of the rectangular member and extend through openings in an opposite wall of said member and the remaining elements are connected to said opposite wall and extend through openings in said one wall.
Claim 17
Dependent Claim
28 words
A device according to claim 15 wherein said certain elements and said remaining elements are alternatively arranged and connected respectively to opposite inside portions of said first member.
References Cited (Backward Citations)
US2351255A
Cited
US2213725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |