US3595140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting or protecting mat
Assignee: Individual
•
Filing: 1968-12-23
•
Granted: 1971-07-27
•
Expires: 1988-12-23
Abstract
Abstract A load supporting or structural protection mat assembled from a group of heavy duty elongate tubular members placed parallel and joined by ropes extending normally through the adjacent tubular members from one end to the others enabling the mat to be rolled if desired. The lengths and the arrangement of different length tubular members can be varied for weight reduction, and the tubular members can be made from metal or plastic. Fins, nails and embedded granular material can be incorporated in and on the tubular members. End members of the mat can be made as handles or, made with special shapes will enable end to end attachment of individual mats. Such mats are contemplated as bridge beds, roadways, runways or other reinforcement surface over the ground.
Inventors
- 👤 Curt Fredrik Lundin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:07
CPC Classifications
E; E01; E01C; E01C3/00; E01C3/006; E01C5/00; E01C5/18; E01C5/20; E01C9/00; E01C9/02; E01C9/08; E01C9/086; E01D; E01D19/00; E01D19/12; E01D19/125; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/122; E02B3/126; E01D2101/00; E01D2101/30; E01D2101/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
197 words
A heavy duty structural mat comprising: a plurality of heavy duty elongate tubular members placed in a side-by-side parallel disposition; said tubular members being apertured at a plurality of spaced locations along their lengths in a direction normal to their elongate dimensions to provide a plurality of spaced apart series of aligned apertures extending from one end of said mat to the other end; and a plurality of rope means, each of which passes through a series of aligned apertures in said tubular members, said rope means having means cooperating with the ends of said mat for securing said tubular members as an assembled mat, said means for securing said tubular members as an assembled mat including graspable handle means at at least one end of the mat, comprising a rigid elongated handle member, spaced from the end tubular member of the mat, and spacing elements at spaced intervals between the rigid elongated handle member and said mat end tubular member, said rope means extending through the spacers and the rigid elongated handle member whereby said rigid elongated handle member may be used as a graspable handle and to tie adjacent similar heavy duty structural mats together.
Claim 2
Dependent Claim
197 words
A heavy duty structural mat comprising: a plurality of heavy duty elongate tubular members placed in a side-by-side parallel disposition; said tubular members being apertured at a plurality of spaced locations along their lengths in a direction normal to their elongate dimensions to provide a plurality of spaced apart series of aligned apertures extending from one end of said mat to the other end; and a plurality of rope means, each of which passes through a series of aligned apertures in said tubular members, said rope means having means cooperating with the ends of said mat for securing said tubular members as an assembled mat, said means for securing said tubular members as an assembled mat including graspable handle means at at least one end of the mat, comprising a rigid elongated handle member, spaced from the end tubular member of the mat, and spacing elements at spaced intervals between the rigid elongated handle member and said mat end tubular member, said rope means extending through the spacers and the rigid elongated handle member whereby said rigid elongated handle member may be used as a graspable handle and to tie adjacent similar heavy duty structural mats together.
Claim 3
Dependent Claim
21 words
A heavy duty structural mat according to claim 1, wherein the tubes consist of elastic material, such as plastic or rubber.
Claim 4
Dependent Claim
16 words
A heavy duty structural mat according to claim 1, wherein the tubes consist of polyethylene plastic.
Claim 5
Dependent Claim
21 words
A heavy duty structural mat as defined in claim 1, wherein said elongated handle member extends the width of said mat.
Claim 6
Dependent Claim
61 words
A heavy duty structural mat as defined in claim 1, wherein said rigid elongated handle members has a semicylindrical configuration in cross section enabling a matching surface to surface, parallel fit against a similar rigid elongated handle member of an adjacent heavy duty mat so that adjacent mats will fit and may be secured together via their adjacent graspable handle means.
Claim 7
Dependent Claim
32 words
A heavy duty structural mat as defined in claim 1, wherein at least some of said tubular members are provided with means projecting from the normal outer surface of said tubular members.
Claim 8
Dependent Claim
21 words
A heavy duty structural mat as defined in claim 6, wherein said means projecting from said tubular members are longitudinal ribs.
Claim 9
Dependent Claim
16 words
A heavy duty structural mat as defined in claim 7, wherein said ribs have transverse recesses.
Claim 10
Dependent Claim
26 words
A heavy duty structural mat as defined in claim 7, wherein said longitudinal ribs are disposed on both the upper and lower surfaces of said mat.
Claim 11
Dependent Claim
36 words
A heavy duty structural mat as defined in claim 6, wherein steel nails are embedded into the walls of said tubular members and portions of said steel nails constitute said means projecting from said tubular members.
Claim 12
Dependent Claim
79 words
A heavy duty structural mat as defined in claim 1, wherein a portion of said tubular members are shorter than half the width of said mat and others of said tubular members have a length equal to the width of said mat and said shorter tubular members are disposed in parallel, spaced-apart groups periodically intersperced with at least one of said longer members, and said longer members and said rope means maintain said shorter members in parallel, spaced-apart disposition.
Claim 13
Dependent Claim
55 words
A heavy duty structural mat as defined in claim 1, wherein at least a portion of said tubular members, at spaced locations along the length of said mat, have transverse holes disposed normal to the direction of said apertures for receiving removable posts for handrails, as desired when said mat is used as bridge decking.
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |