US4973193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kwik-set mat system
Assignee: Central Industries Inc
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Filing: 1989-08-31
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Granted: 1990-11-27
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Expires: 2009-08-31
Abstract
Abstract An apparatus and method for constructing a reusable wooden matting system for use as a temporary surface at construction sites. The matting system includes interlocking mats of four differing configurations. Each mat configuration consists of wooden boards fastened together to create from one to three layers of boards at various areas of the individual mats. When interlockingly installed a desired area is uniformly covered with three layers of boards. The upper, working layer of boards, bears the vehicular traffic or equipment placement. The middle, intermediate layer of boards, consists of interlock boards which fittingly interlock with corresponding spaces of adjacent mats, and, interspace boards to reinforce the weight bearing characteristics of the mats. The lower, contact layer of boards, rest upon the terrain. Within a layer the boards are parallel to one another, whereas the boards of each layer are perpendicular to the boards of any adjacent layer. When installed each mat interlockingly overlaps or underlaps approximately one-third of the width and one-half of the length of laterally adjacent mats. Both lateral and longitudinal relative movement of any installed mat is substantially precluded by a portion of each mat unit being in frictional engagement with the terrain, by a portion of each mat unit overlapping interlocking with adjacent mats and all three layers of each mat laterally and longitudinally abutting other mats which are also in frictional engagement with the ground.
Inventors
- 👤 Orville W. Watson
- 👤 Charles D. Domingue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:00
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/08; E01C9/086
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
238 words
A matting system, for constructing a three layer board surface of partially overlappingly interconnected individual mats over a desired area of unimproved terrain, comprising: (a) a plurality of kingpin mats which are comprised of an upper, working layer of longitudinally parallel boards covering substantially the central one-third of the width of the mat; a lowermost, contact layer of longitudinally parallel boards, which substantially extend the mat's entire width and are substantially parallel to the boards of said working layer; and, an intermediate layer of longitudinally parallel boards disposed between and perpendicular to said working layer and said contact layer, which said intermediate layer is comprised of a singular board at each longitudinal end of the mat, and pairs of boards spaced two board widths apart therebetween, and, (b) a plurality of main mats which are comprised of an upper, working layer of longitudinally parallel boards covering substantially a lateral two-thirds of the width of the mat; a lowermost, contact layer of longitudinally parallel boards oriented substantially parallel to the boards of the working layer, which substantially extend the lateral two-thirds of the mat's width which is horizontally opposite the working layer; and, an intermediate layer of longitudinally parallel boards disposed between and perpendicular to said working layer and said contact layer, which said intermediate layer is comprised of a singular board at each longitudinal end of the mat, and pairs of boards spaced two board widths apart therebetween.
Claim 2
Dependent Claim
238 words
A matting system, for constructing a three layer board surface of partially overlappingly interconnected individual mats over a desired area of unimproved terrain, comprising: (a) a plurality of kingpin mats which are comprised of an upper, working layer of longitudinally parallel boards covering substantially the central one-third of the width of the mat; a lowermost, contact layer of longitudinally parallel boards, which substantially extend the mat's entire width and are substantially parallel to the boards of said working layer; and, an intermediate layer of longitudinally parallel boards disposed between and perpendicular to said working layer and said contact layer, which said intermediate layer is comprised of a singular board at each longitudinal end of the mat, and pairs of boards spaced two board widths apart therebetween, and, (b) a plurality of main mats which are comprised of an upper, working layer of longitudinally parallel boards covering substantially a lateral two-thirds of the width of the mat; a lowermost, contact layer of longitudinally parallel boards oriented substantially parallel to the boards of the working layer, which substantially extend the lateral two-thirds of the mat's width which is horizontally opposite the working layer; and, an intermediate layer of longitudinally parallel boards disposed between and perpendicular to said working layer and said contact layer, which said intermediate layer is comprised of a singular board at each longitudinal end of the mat, and pairs of boards spaced two board widths apart therebetween.
Claim 3
Dependent Claim
40 words
A matting system, according to claim 1, further comprising: (c) a plurality of one-half main mats, which are substantially similar to the above described main mats, except said one-half main mats are one-half the length of the said main mats
Claim 4
Dependent Claim
37 words
A matting system, according to claim 1, further comprising: (c) a plurality of side mats, which are substantially similar to the above described main mats, except their upper working layer covers the entire width of the mat.
Claim 5
Dependent Claim
37 words
A matting system, according to claim 2, further comprising: (d) a plurality of side mats, which are substantially similar to the above described main mats, except their upper working layer covers the entire width of the mat.
Claim 6
Dependent Claim
69 words
A matting system, according to claim 1, wherein the intermediate layer of the kingpin mat and intermediate layer of the main mat is further comprised of pairs of boards of a length substantially one third of the width of said mats, which said pairs of boards are centrally disposed between the lateral edges of the mat, between the working layer and contact layer in the two-board width spaces described.
Claim 7
Dependent Claim
46 words
A matting system, according to claim 2, wherein said intermediate layer of each mat is further comprised of pairs of spacer boards disposed between the working layer and contact layer, in the two-board width spaces described wherever said working layer and said contact layer vertically overlap.
Claim 8
Dependent Claim
47 words
A matting system, according to claim 3, wherein said intermediate layer of each mat is further comprised of pairs of spacer boards disposed between the working layer and contact layer, in the two board width spaces described, wherever said working layer and said contact layer vertically overlap.
Claim 9
Dependent Claim
47 words
A matting system, according to claim 4, wherein said intermediate layer of each mat is further comprised of pairs of spacer boards disposed between the working layer and contact layer, in the two board width spaces described, wherever said working layer and said contact layer vertically overlap.
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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) | 1993-11-26 | 1994-05-28 | 1994-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-26 | 1998-05-28 | 1998-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-26 | 2002-05-28 | 2002-11-27 | $7700.00 | Window Closed / Lapsed |