US3722379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing an expansion gap device and lost casing for such expansion gap
Assignee: Kober AG Glarus
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Filing: 1971-03-10
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Granted: 1973-03-27
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Expires: 1991-03-10
Abstract
Abstract The present invention relates to a method of constructing an expansion gap between two structural members such as concrete slabs in roads or on bridges. First the concrete slabs are formed with a gap between two adjacent slabs whereupon a surface layer is applied to the slabs to cover the slabs as well as the gap. Thereafter, a recess is formed in the surface layer above the gap but wider than the gap. A lost casing is then inserted into the recess and gap and the space laterally adjacent to the lost casing is filled with a synthetic resin concrete. When the concrete is set, a cross portion of the lost casing which bridges the gap is removed, for example by sawing. An elastic sealing body or strip is inserted either as a unit with the lost casing or it is snapped into position, after said cross portion has been removed, in recesses formed by said lost casing in the synthetic resin concrete. The lost casing is a downwardly open profile with shaped side members for forming said recesses and interconnected by said cross portion.
Inventors
- 👤 W Koester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:26
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/06; E01D19/067; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/12; E01C11/126
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
166 words
A method for constructing an expansion gap sealing device located between adjacent structural members with elastic sealing means inserted in the completed gap, comprising the steps of: a. placing the structural members adjacent to each other to form the expansion gap therebetween, b. covering said structural members including the gap therebetween with a surface layer, c. removing out of said surface layer above said gap and in parallel to the gap, surface layer material to form a recess in the surface layer above the gap, said recess having a width larger than that of the gap, d. providing lateral slots adjacent to said recess so that the slots form extensions of the recess, e. securing in said gap a casing adapted to retain said elastic sealing means in the gap, f. filling said recess with its slots laterally and adjacent to said casing with synthetic resin concrete, g. setting said synthetic resin concrete, and h. removing a cross portion of said casing which bridges the gap.
Claim 2
Independent Claim
166 words
A method for constructing an expansion gap sealing device located between adjacent structural members with elastic sealing means inserted in the completed gap, comprising the steps of: a. placing the structural members adjacent to each other to form the expansion gap therebetween, b. covering said structural members including the gap therebetween with a surface layer, c. removing out of said surface layer above said gap and in parallel to the gap, surface layer material to form a recess in the surface layer above the gap, said recess having a width larger than that of the gap, d. providing lateral slots adjacent to said recess so that the slots form extensions of the recess, e. securing in said gap a casing adapted to retain said elastic sealing means in the gap, f. filling said recess with its slots laterally and adjacent to said casing with synthetic resin concrete, g. setting said synthetic resin concrete, and h. removing a cross portion of said casing which bridges the gap.
Claim 3
Dependent Claim
34 words
The method according to claim 1, wherein said sealing means and the casing are pre-assembled as a unit and are thus inserted into the gap simultaneously prior to the removal of said cross portion.
Claim 4
Dependent Claim
25 words
The method according to claim 1, wherein said sealing means are inserted into said casing after said cross portion has been removed from the casing.
Claim 5
Dependent Claim
24 words
The method according to claim 1, comprising cutting said lateral slots so that they extend substantially perpendicularly to the longitudinal axis of the gap.
Claim 6
Dependent Claim
19 words
The method according to claim 1, comprising cutting said lateral slots so that they extend through the surface layer.
Claim 7
Dependent Claim
24 words
The method according to claim 1, comprising cutting said lateral slots so that they extend through the surface layer and into said concrete layer.
Claim 8
Dependent Claim
56 words
The method according to claim 1, further comprising the intermediate step of placing, prior to said filling step, a form body on top of said casing, said form body having the shape of the gap above the casing and a top surface which extends substantially in the same plane as the top of said surface layer.
Claim 9
Dependent Claim
87 words
The method according to claim 1, wherein said removing of the gap bridging cross portion of the casinG is performed by moving along the top of the casing, cutting means having two cutting members spaced from each other sufficiently to sever said bridging cross portion from remaining side members of the casing while simultaneously moving a guide member of said cutting means along said bridging cross portion, whereby the guide member is supported at least partially on said bridging cross portion ahead of the advancing cutting members.
Claim 10
Dependent Claim
50 words
The method according to claim 1, wherein said removing of the bridging cross portion of the casing is accomplished by severing said bridging cross portion form the remainder of the casing along notches which reduce the thickness of said bridging cross portion substantially adjacent to the remainder of said casing.
Claim 11
Dependent Claim
29 words
The method according to claim 1, comprising cutting said lateral slots so that the slots have side walls extending at an angle relative to the length of said gap.
Claim 12
Dependent Claim
36 words
The method according to claim 10, wherein said slots are cut so that said side walls of each slot extend in parallel to each other and at said angle relative to the length of said gap.
Claim 13
Dependent Claim
25 words
The method according to claim 10, wherein said slots are cut so that the two side walls of each slot are inclined in different directions.
Claim 14
Dependent Claim
146 words
In a casing for an expansion gap sealing device which casing remains at least partially in an expansion gap formed between edges of adjacent structural members, wherein a profiled right leg and a profiled left leg are arranged substantially mirror-symmetrically to each other, and wherein the legs are interconnected by removable gap bridging means extending longitudinally between the legs to form a channel member having an open side opposite said gap bridging means, said open side facing downwardly relative to the built-in position of the casing in said gap, the improvement comprising profiled recesses in said legs which recesses face each other for snapping into said recesses a respectively profiled sealing strip to be held and retained in said recesses, said gap bridging means further comprising expandable means extending in a longitudinal direction between the legs and stretchable in a direction perpendicularly to said longitudinal direction.
Claim 15
Dependent Claim
146 words
In a casing for an expansion gap sealing device which casing remains at least partially in an expansion gap formed between edges of adjacent structural members, wherein a profiled right leg and a profiled left leg are arranged substantially mirror-symmetrically to each other, and wherein the legs are interconnected by removable gap bridging means extending longitudinally between the legs to form a channel member having an open side opposite said gap bridging means, said open side facing downwardly relative to the built-in position of the casing in said gap, the improvement comprising profiled recesses in said legs which recesses face each other for snapping into said recesses a respectively profiled sealing strip to be held and retained in said recesses, said gap bridging means further comprising expandable means extending in a longitudinal direction between the legs and stretchable in a direction perpendicularly to said longitudinal direction.
Claim 16
Dependent Claim
32 words
The casing according to claim 13, wherein said expandable means of the gap bridging means comprise a longitudinal, downwardly extending fold located substantially along the center line of said gap bridging means.
Claim 17
Dependent Claim
37 words
The casing according to claim 13, wherein said expandable means of the gap bridging means comprise a longitudinal slot located substantially along the center of said cross portion, and spaced narrow lands for bridging said longitudinal slot.
Claim 18
Dependent Claim
38 words
The casing according to claim 13, wherein said profiled right and left legs comprise downwardly extending side walls spaced from each other so as to extend in parallel to said edges of said structural members forming the gap.
Claim 19
Dependent Claim
48 words
The casing according to claim 16, wherein said downwardly extending walls of the right and left leg comprise punched out and bent out supporting lugs extending laterally out of said downwardly extending walls for supporting the casing on the edges of the structural members adjacent to the gap.
Claim 20
Dependent Claim
27 words
The casing according to claim 13, wherein said profiled right and left legs comprise punched out and bent out anchoring means extending laterally out of said legs.
Claim 21
Dependent Claim
21 words
The casing according to claim 13, wherein said gap bridging means is shaped as a seat for receiving a form body.
Claim 22
Dependent Claim
27 words
The casing according to claim 13, wherein said channel member has a corrugated shape relative to its length so as to fit into a correspondingly corrugated gap.
Claim 23
Dependent Claim
28 words
The casing according to claim 13, wherein said channel member has a zig-zag shape relative to its length so as to fit into a correspondingly zig-zag shaped gap.
Claim 24
Dependent Claim
15 words
The casing according to claim 13, wherein said channel member is made of sheet metal.
Claim 25
Dependent Claim
15 words
The casing according to claim 13, wherein said channel member is made of thermOplastic material.
Claim 26
Dependent Claim
39 words
The casing according to claim 13, further comprising means for facilitating the severing of said gap bridging means from said right and left leg, said means being located longitudinally between said gap bridging means and each of said legs.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |