US3601995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoring construction
Assignee: Hoesch AG
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Filing: 1968-12-12
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Granted: 1971-08-31
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Expires: 1988-12-12
Abstract
Abstract A shoring for underground passages includes a plurality of annular supporting frame members which are arranged axially of one another and whose adjacent axial end portions are provided with juxtaposed endfaces, each two juxtaposed endfaces defining with each other a circumferentially extending gap. An annular wedging frame closes the respective gaps in such a manner as to provide for substantially uniform transmission of tensile or compressive stresses between the adjacent supporting frame members at all circumferential locations, and provides for such closing regardless of the angular inclination of the juxtaposed endfaces with respect to one another as long as this inclination is within a predetermined range.
Inventors
- 👤 Rudolf Siez
- 👤 Hans-Gunther Lichtenbaumer
- 👤 Joachim Neefe
- 👤 Wolfgang Scheer
- 👤 Franz Gantke
- 👤 Walter Zywietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:04
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/14; E21D11/15
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
161 words
A shoring for underground passages, comprising at least two axially arrayed annular supporting frame members having adjacent axial end portions provided with juxtaposed end faces defining with each other a circumferentially extending radial gap, said frame members being capable of positioning in a plurality of relative positions in which their respective longitudinal axes are inclined to one another at different angles with concomitant variations in the width of said gap at different circumferential locations oF the latter; and at least substantially annular wedging frame means of circumferentially constant but radially tapering cross section entering said radial gap at different circumferential locations of the latter to different extends depending upon variations of the width of said gap and sealingly closing said radial gap in abutment with said adjacent end portions, whereby to effect sealing of said gap within a predetermined range of angular inclinations of said axes by requisite displacement of said wedging frame means in the radial plane of said gap.
Claim 2
Dependent Claim
161 words
A shoring for underground passages, comprising at least two axially arrayed annular supporting frame members having adjacent axial end portions provided with juxtaposed end faces defining with each other a circumferentially extending radial gap, said frame members being capable of positioning in a plurality of relative positions in which their respective longitudinal axes are inclined to one another at different angles with concomitant variations in the width of said gap at different circumferential locations oF the latter; and at least substantially annular wedging frame means of circumferentially constant but radially tapering cross section entering said radial gap at different circumferential locations of the latter to different extends depending upon variations of the width of said gap and sealingly closing said radial gap in abutment with said adjacent end portions, whereby to effect sealing of said gap within a predetermined range of angular inclinations of said axes by requisite displacement of said wedging frame means in the radial plane of said gap.
Claim 3
Dependent Claim
20 words
A shoring as defined in claim 1 wherein said supporting frame members and said wedging frame means are circumferentially complete.
Claim 4
Dependent Claim
20 words
A shoring as defined in claim 1, wherein said supporting frame members and said wedging frame means are circumferentially incomplete.
Claim 5
Dependent Claim
23 words
A shoring as defined in claim 1, wherein at least said supporting frame members each consist of a plurality of connected discrete segments.
Claim 6
Dependent Claim
29 words
A shoring as defined in claim 1, wherein said wedging frame means comprise at least one annular wedging frame composed of a plurality of connected discrete wedging frame segments.
Claim 7
Dependent Claim
23 words
A shoring as defined in claim 1, said wedging frame means encircling said radial gap in abutment with said adjacent axial end portions.
Claim 8
Dependent Claim
68 words
A shoring as defined in claim 1, said end portions being provided with radial flanges each having one of said juxtaposed endfaces and said endfaces diverging radially inwardly, and in axial direction of said annular supporting frame members; and wherein said wedging frame means is of radially outwardly converging wedge-shaped cross section with the axial faces of said wedging frame means abutting with surface-to-surface contact against said endfaces.
Claim 9
Dependent Claim
34 words
A shoring as defined in claim 1, said supporting frame members and said wedging frame means being of other-than-circular outline, and said wedging frame means being composed of a plurality of substantially straight segments.
Claim 10
Dependent Claim
39 words
A shoring as defined in claim 1, said supporting frame members and said wedging frame means being of other-than-circular outline, and said wedging frame means being composed of a plurality of segments of at least substantially identical arcuate curvature.
Claim 11
Dependent Claim
75 words
A shoring as defined in claim 1, said end portions being in form of radially extending flanges; and further comprising a plurality of circumferentially distributed bolt-and-nut means provided on said frame members adjacent said flanges, said wedging frame being provided at opposite axial sides of said gap with openings elongated in axial direction of said wedging frame and in which said bolt-and-nut means are engageable for connecting said wedging frame means with said frame members.
Claim 12
Dependent Claim
53 words
A shoring as defined in claim 1, said wedging frame means having abutment faces abutting against said end portions; and further comprising elastically yieldable sealing material provided at least on said abutment faces for provided at least on said abutment faces for providing a fluidtight seal between the same and said end portions.
Claim 13
Dependent Claim
21 words
A shoring as defined in claim 1, said annular wedging frame means being of at least substantially wedge-shaped radial cross-sectional configuration.
Claim 14
Dependent Claim
31 words
A shoring as defined in claim 12, said cross-sectional configuration resembling at least substantially a trapezium having side faces inclined to one another at angles of substantially between 20 and 35*.
Claim 15
Dependent Claim
24 words
A shoring as defined in claim 13, wherein the base of the trapezium faces in radially inward direction of said annular wedging frame means.
Claim 16
Dependent Claim
13 words
A shoring as defined in claim 13, wherein said side faces are straight.
Claim 17
Dependent Claim
14 words
A shoring as defined in claim 13, wherein said side faces are arcuately curved.
Claim 18
Dependent Claim
15 words
A shoring as defined in claim 16, wherein said side faces have S-shaped arcuate curvatures.
Claim 19
Dependent Claim
70 words
A shoring as defined in claim 12, said wedging frame means of substantially wedge-shapeD cross section having a base side facing radially inwardly; further comprising plate means overlying circumferentially distributed selected portions of said base side in abutment therewith and projecting axially therebeyond; and bolt-and-nut means provided on said frame members and engaging said plate means for connecting the same and thereby said wedging frame means to said frame members.
Claim 20
Dependent Claim
42 words
A shoring as defined in claim 18, said endfaces of said frame members being inclined with reference to one another, and said plate means having edge faces tapered in correspondence with such inclination and abutting against the respective endfaces in surface-to-surface contact.
Claim 21
Dependent Claim
51 words
A shoring as defined in claim 1, said annular supporting frame members and said wedging frame means each having a radial cross-sectional configuration resembling a trapezium, and wherein the base line of said wedging frame means faces in an opposite radial direction than the base lines of said supporting frame members.
Claim 22
Dependent Claim
38 words
A shoring as defined in claim 20, each of said trapezium-shaped cross sections having two sides paralleling one another and one of which is the base line, and wherein one of said two sides is an open side.
Claim 23
Dependent Claim
50 words
A shoring as defined in claim 1, said end portions being in form of radially extending flanges; and further comprising a plurality of circumferentially distributed bolt-and-nut means provided on said frame members adjacent said flanges and engageable with said wedging frame means for connecting the same with said frame members.
Claim 24
Dependent Claim
24 words
A shoring as defined in claim 22, said bolt-and-nut means being operative for exerting radially inwardly directed wedging pressure on said wedging frame means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |