US4440363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing mat or the like
Assignee: Estel Hoesch Werke AG
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Filing: 1981-10-01
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Granted: 1984-04-03
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Expires: 2001-10-01
Abstract
Abstract A landing mat for compacted terrain is formed by assembling a multiplicity of mat elements in contiguous relationship. Each of these elements has a rectangular plan configuration and is formed along its longitudinal edges with downwardly bent flanges, and between these flanges, with flattened corrugations forming longitudinal ribs perpendicular to the planar upper surface of the element. Stabilizing plates can extend transversely to the ribs and flanges and can have upwardly open slots snugly receiving the ribs. Clips bridging contiguous edges of adjoining elements are fitted into elongated windows spaced inwardly of these edges to hold the elements together and an edge member, likewise having a flattened-corrugation rib, is fixed along one edge of the mat and has downwardly turned tongues fitted into the window of the elements along the latter edge.
Inventors
- 👤 Werner Brand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:20
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/005; E01C9/00; E01C9/08; E01C9/083; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/31; Y10S24/33; Y10S403/00; Y10S403/15; Y10T; Y10T24/00; Y10T24/45; Y10T24/45005; Y10T403/00; Y10T403/71; Y10T403/7123
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
204 words
A load-supporting platform adapted to rest on precompacted terrain, comprising a multiplicity of multiply adjoining substantially identical units having opposite longitudinal edges continuous with corresponding edges of other units and transverse edges contiguous with corresponding edges of other units, each of said units having a pair of downwardly turned flanges along their opposite longitudinal edges and inner ribs parallel to but spaced from said flanges and formed as flattened corrugations, a transverse rib for at least one of said units extending at an angle to said inner ribs and flanges thereof, each of said units being formed at a predetermined distance inwardly of at least one of its edges with a window opposite a window formed in an adjoining unit along the contiguous edge thereof, and clips spanning contiguous edges of adjoining units and removably received in the windows thereof, said windows being elongated and having a major axis parallel to the respective edge of the unit formed with the window, said clip being a metal strip formed with a hook at one end engageable in one window and, at the other end, with a downwardly turned tongue provided with a corrugation engageable beneath an edge of another of said windows receiving said tongue.
Claim 2
Dependent Claim
204 words
A load-supporting platform adapted to rest on precompacted terrain, comprising a multiplicity of multiply adjoining substantially identical units having opposite longitudinal edges continuous with corresponding edges of other units and transverse edges contiguous with corresponding edges of other units, each of said units having a pair of downwardly turned flanges along their opposite longitudinal edges and inner ribs parallel to but spaced from said flanges and formed as flattened corrugations, a transverse rib for at least one of said units extending at an angle to said inner ribs and flanges thereof, each of said units being formed at a predetermined distance inwardly of at least one of its edges with a window opposite a window formed in an adjoining unit along the contiguous edge thereof, and clips spanning contiguous edges of adjoining units and removably received in the windows thereof, said windows being elongated and having a major axis parallel to the respective edge of the unit formed with the window, said clip being a metal strip formed with a hook at one end engageable in one window and, at the other end, with a downwardly turned tongue provided with a corrugation engageable beneath an edge of another of said windows receiving said tongue.
Claim 3
Dependent Claim
53 words
The load-supporting platform defined in claim 1 wherein said transverse rib is a plate snugly received between inner cheeks of said flanges of said one of said members and formed with cutouts form-fittingly receiving the inner ribs thereof and corresponding in cross section to said inner ribs of said one of said units.
Claim 4
Dependent Claim
63 words
A load-supporting platform defined in claim 1 or claim 2 which is provided with an edge strip along one side of the landing mat, said edge strip having a rib constituted as a flattened corrugation and resting against flanges of said units disposed along said side of said landing mat and with downwardly turned tongues receivable in said windows of the latter units.
Claim 5
Dependent Claim
176 words
A landing mat adapted to rest on precompacted terrain comprising: a multiplicity of substantially identical generally rectangular units having opposite longitudinal edges contiguous with corresponding longitudinal edges of other units and transverse edges contiguous with corresponding transverse edges of other units, each of said units having a pair of downwardly turned flanges along their opposite longitudinal edges, and inner ribs parallel to but spaced transversely from said flanges and formed as flattened corrugations; at least one transverse rib for at least one of said units constituting a plate having cutouts formed fittingly receiving the inner ribs thereof, the contiguous units being provided parallel to their adjoining edges but spaced inwardly thereof with elongated windows parallel to the respective edges and disposed in pairs of the adjoining units; and respective clips coupling said pairs of windows, each of said clips being formed as a metal strip having a hook at one end engaging in a window of one of said pairs and a tongue having a corrugation resiliently inserted in the other window of the respective pair.
Claim 6
Dependent Claim
176 words
A landing mat adapted to rest on precompacted terrain comprising: a multiplicity of substantially identical generally rectangular units having opposite longitudinal edges contiguous with corresponding longitudinal edges of other units and transverse edges contiguous with corresponding transverse edges of other units, each of said units having a pair of downwardly turned flanges along their opposite longitudinal edges, and inner ribs parallel to but spaced transversely from said flanges and formed as flattened corrugations; at least one transverse rib for at least one of said units constituting a plate having cutouts formed fittingly receiving the inner ribs thereof, the contiguous units being provided parallel to their adjoining edges but spaced inwardly thereof with elongated windows parallel to the respective edges and disposed in pairs of the adjoining units; and respective clips coupling said pairs of windows, each of said clips being formed as a metal strip having a hook at one end engaging in a window of one of said pairs and a tongue having a corrugation resiliently inserted in the other window of the respective pair.
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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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |