CA2699910A1 - Modular roadway - Google Patents
Modular roadway Download PDFInfo
- Publication number
- CA2699910A1 CA2699910A1 CA2699910A CA2699910A CA2699910A1 CA 2699910 A1 CA2699910 A1 CA 2699910A1 CA 2699910 A CA2699910 A CA 2699910A CA 2699910 A CA2699910 A CA 2699910A CA 2699910 A1 CA2699910 A1 CA 2699910A1
- Authority
- CA
- Canada
- Prior art keywords
- platform
- roadway
- mat
- mats
- boards
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
- E01C9/08—Temporary pavings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
A roadway is formed by a plurality of mats flexibly connected together at their ends. The mats are rectangular in configuration to form straight sections of the roadway and trapezoidal in configuration to form curved sections. Each mat comprises a flat platform of transverse wooden boards secured to side rails at their ends. The mats are tied together at their ends by overlapping flat steel plates secured together by bolts to form connections. The connections have sufficient flexibility to allow the mats to conform to uneven terrain. The rails function as curbs to prevent a vehicle, passing along the roadway, from slipping off sideways. The mats are relatively light, allowing manual installation.
Description
MODULAR ROADWAY
FIELD OF THE INVENTION
This application relates to mats which can be assembled end-to-end to form a roadway over uneven ground for use by light vehicles, such as quads, all terrain vehicles and golf carts, and individuals.
BACKGROUND
The present system was initially developed to enable the construction of temporary roadway sections over marshy uneven ground, to thereby provide access for light vehicles, such as quads, to sites such as an oil drilling site.
It has long been known to provide corduroy roadways for this purpose by laying logs in side-by-side array over the marshy ground. However this is time-consuming and expensive to do and requires the availability of properly sized lumber.
There has therefore long existed a need for an alternative. The present invention addresses this need.
SUMMARY
Applicant set out to provide such an alternative with certain criteria in mind, namely:
= a modular system of mats was needed whereby the mats could be linked together end-to-end to form a roadway;
= the links, while sturdy, needed to be flexible enough to allow limited pivoting between adjacent mat ends and thereby enable the roadway to maintain contact with uneven ground;
= the mats needed to be adapted to provide a roadway which could follow a curved path and/or a straight path;
= the mats should be light enough to be manually carried by two men;
= the mats needed to be capable of supporting a quad for travel thereover;
I
= the mats needed to be adapted to prevent a vehicle such as a quad from slipping off sideways; and = it was preferable that the mats be formed of biodegradable material.
As the component for constructing straight sections of the roadway, a rectangular mat is provided comprising:
= a flat platform of transverse rectangular boards aligned in side by side formation;
= rails secured to the platform to form a coherent unit therewith and extending upwardly therefrom along the side edges thereof, for providing curbs to resist sideways sliding of a quad passing over the platform;
= optionally, downwardly projecting, spaced apart straps extending longitudinally of the underside of the platform and secured to the platform, for reinforcing and supporting the platform and cooperating with the rails and boards to form a coherent structure; and = means, for example flat steel plates bolted on the ends of the rails, for flexibly linking one mat end to another in end to end alignment;
= the mat preferably being light enough to be manually conveyed by two men.
For constructing curved sections of the roadway, a mat is provided having a trapezoidal platform, formed of trapezoidally shaped boards and having side edges of unequal length.
When a roadway is formed in one embodiment, it comprises at least one linear section of rectangular mats flexibly linked together in end-to-end alignment, each such mat comprising a flat platform formed of rectangular boards, arranged side by side and secured to rails extending upwardly therefrom along the side edge portions of the platform, for providing curbs; and at least one curved section of trapezoidal mats flexibly linked together in end to end formation and to the linear section, each trapezoidal mat having a flat platform formed of trapezoidally shaped boards and side rails, the platform having side edges of unequal length.
Preferably, the mats are formed of wood and are light enough to be individually carried by two men.
FIELD OF THE INVENTION
This application relates to mats which can be assembled end-to-end to form a roadway over uneven ground for use by light vehicles, such as quads, all terrain vehicles and golf carts, and individuals.
BACKGROUND
The present system was initially developed to enable the construction of temporary roadway sections over marshy uneven ground, to thereby provide access for light vehicles, such as quads, to sites such as an oil drilling site.
It has long been known to provide corduroy roadways for this purpose by laying logs in side-by-side array over the marshy ground. However this is time-consuming and expensive to do and requires the availability of properly sized lumber.
There has therefore long existed a need for an alternative. The present invention addresses this need.
SUMMARY
Applicant set out to provide such an alternative with certain criteria in mind, namely:
= a modular system of mats was needed whereby the mats could be linked together end-to-end to form a roadway;
= the links, while sturdy, needed to be flexible enough to allow limited pivoting between adjacent mat ends and thereby enable the roadway to maintain contact with uneven ground;
= the mats needed to be adapted to provide a roadway which could follow a curved path and/or a straight path;
= the mats should be light enough to be manually carried by two men;
= the mats needed to be capable of supporting a quad for travel thereover;
I
= the mats needed to be adapted to prevent a vehicle such as a quad from slipping off sideways; and = it was preferable that the mats be formed of biodegradable material.
As the component for constructing straight sections of the roadway, a rectangular mat is provided comprising:
= a flat platform of transverse rectangular boards aligned in side by side formation;
= rails secured to the platform to form a coherent unit therewith and extending upwardly therefrom along the side edges thereof, for providing curbs to resist sideways sliding of a quad passing over the platform;
= optionally, downwardly projecting, spaced apart straps extending longitudinally of the underside of the platform and secured to the platform, for reinforcing and supporting the platform and cooperating with the rails and boards to form a coherent structure; and = means, for example flat steel plates bolted on the ends of the rails, for flexibly linking one mat end to another in end to end alignment;
= the mat preferably being light enough to be manually conveyed by two men.
For constructing curved sections of the roadway, a mat is provided having a trapezoidal platform, formed of trapezoidally shaped boards and having side edges of unequal length.
When a roadway is formed in one embodiment, it comprises at least one linear section of rectangular mats flexibly linked together in end-to-end alignment, each such mat comprising a flat platform formed of rectangular boards, arranged side by side and secured to rails extending upwardly therefrom along the side edge portions of the platform, for providing curbs; and at least one curved section of trapezoidal mats flexibly linked together in end to end formation and to the linear section, each trapezoidal mat having a flat platform formed of trapezoidally shaped boards and side rails, the platform having side edges of unequal length.
Preferably, the mats are formed of wood and are light enough to be individually carried by two men.
2 Preferably the means for linking mats are apertured flat steel plates bolted to and projecting beyond the ends of the rails, the plate of one mat rail being bolted to a plate of an adjacent mat rail.
Broadly stated, a roadway is provided comprising a formation of mats flexibly linked together in end to end alignment, some of the mats being rectangular in configuration and linked together to form a straight section of the roadway, some of the mats being trapezoidal in configuration and linked together to form a curved section of the roadway.
DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of a straight section of a temporary roadway formed of mats linked together in end-to-end alignment for extending over uneven ground;
Figure 2 is a closer-up view of part of the roadway of Figure 1 showing detail of the linking means;
Figure 2A is a side view of a disengagable flexible connection securing together the ends of two mats;
Figure 3 is a perspective end view of a rectangular mat;
Figure 3A is an end view of a trapezoidal mat for use in a curved section of roadway;
Figure 4 is a perspective side view of the trapezoidal mat of Figure 3A;
Figure 5 is a top plan view of a roadway comprising straight and curved sections.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In general, a roadway 1 in accordance with the invention comprises straight and curved sections 2, 3 of rectangular and trapezoidal mats 4, 5, flexibly linked together in end-to-end alignment.
In one embodiment, each rectangular mat 4 comprises a rectangular wooden platform 6; the platform is 8' in length and formed of 5/4" x 6" x 6' lodgepole pine
Broadly stated, a roadway is provided comprising a formation of mats flexibly linked together in end to end alignment, some of the mats being rectangular in configuration and linked together to form a straight section of the roadway, some of the mats being trapezoidal in configuration and linked together to form a curved section of the roadway.
DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of a straight section of a temporary roadway formed of mats linked together in end-to-end alignment for extending over uneven ground;
Figure 2 is a closer-up view of part of the roadway of Figure 1 showing detail of the linking means;
Figure 2A is a side view of a disengagable flexible connection securing together the ends of two mats;
Figure 3 is a perspective end view of a rectangular mat;
Figure 3A is an end view of a trapezoidal mat for use in a curved section of roadway;
Figure 4 is a perspective side view of the trapezoidal mat of Figure 3A;
Figure 5 is a top plan view of a roadway comprising straight and curved sections.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In general, a roadway 1 in accordance with the invention comprises straight and curved sections 2, 3 of rectangular and trapezoidal mats 4, 5, flexibly linked together in end-to-end alignment.
In one embodiment, each rectangular mat 4 comprises a rectangular wooden platform 6; the platform is 8' in length and formed of 5/4" x 6" x 6' lodgepole pine
3 boards 7 laid in transverse, parallel, spaced apart, side-by-side formation.
The boards 7 are secured by steel bolts 8 to a pair of spaced apart, underlying 2" x 4"
longitudinally extending straps 9, for reinforcement. A pair of 2" x 4" x 8' boards 10 are stacked along each side edge of the platform 6 to form a side rail 11.
Each side rail 11 is secured to the platform 6 by bolts 12. Each side rail 11 extends the length of the platform 6 and provides a curb for resisting sideways slippage off the roadway I
by a vehicle, such as a quad, passing along the roadway 1.
Flat steel plates 15, forming bolt holes 16, are secured by bolts 17 to the side rails 11. Each plate 15 projects beyond an end of the side rail 11 to which it is secured. The projecting portion 18 of each plate 15 forms a bolt hole 19. As shown in Figure 2A, the projecting portions 18 of adjacent plates 15 overlap when the plates are brought together. A nut and bolt assembly 20 comprising a plastic washer ties the adjacent plates 15 together to form a connection 22. The connections function to flexibly link adjacent mats 4, 5 together in end-to-end alignment.
15 As shown in Figures 4 and 3A, trapezoidal mats 5 are provided to form the curved sections 3 of the roadway 1. Each trapezoidal mat 5 conforms in construction with the rectangular mat 4 except that: the platform 6 is formed of trapezoidically shaped boards 23; the trapezoidal mats 5 are shorter in length than the rectangular mats 4 and incorporate fewer platform boards than the rectangular mats 4; and the sides 24, 25 of each trapezoidal mat 6 are unequal in length.
The mats 4, 5 described are light enough to be carried by two men - typically the wooden rectangular mats 4 weight about 180 pounds.
It is contemplated that variants can be substituted for components of the mats just described. For example: cables can lash the ends of the mats together to provide the flexible links; and the boards, rails and straps can be formed of strong rigid plastic. Such variants are within the scope of the claims now following.
The boards 7 are secured by steel bolts 8 to a pair of spaced apart, underlying 2" x 4"
longitudinally extending straps 9, for reinforcement. A pair of 2" x 4" x 8' boards 10 are stacked along each side edge of the platform 6 to form a side rail 11.
Each side rail 11 is secured to the platform 6 by bolts 12. Each side rail 11 extends the length of the platform 6 and provides a curb for resisting sideways slippage off the roadway I
by a vehicle, such as a quad, passing along the roadway 1.
Flat steel plates 15, forming bolt holes 16, are secured by bolts 17 to the side rails 11. Each plate 15 projects beyond an end of the side rail 11 to which it is secured. The projecting portion 18 of each plate 15 forms a bolt hole 19. As shown in Figure 2A, the projecting portions 18 of adjacent plates 15 overlap when the plates are brought together. A nut and bolt assembly 20 comprising a plastic washer ties the adjacent plates 15 together to form a connection 22. The connections function to flexibly link adjacent mats 4, 5 together in end-to-end alignment.
15 As shown in Figures 4 and 3A, trapezoidal mats 5 are provided to form the curved sections 3 of the roadway 1. Each trapezoidal mat 5 conforms in construction with the rectangular mat 4 except that: the platform 6 is formed of trapezoidically shaped boards 23; the trapezoidal mats 5 are shorter in length than the rectangular mats 4 and incorporate fewer platform boards than the rectangular mats 4; and the sides 24, 25 of each trapezoidal mat 6 are unequal in length.
The mats 4, 5 described are light enough to be carried by two men - typically the wooden rectangular mats 4 weight about 180 pounds.
It is contemplated that variants can be substituted for components of the mats just described. For example: cables can lash the ends of the mats together to provide the flexible links; and the boards, rails and straps can be formed of strong rigid plastic. Such variants are within the scope of the claims now following.
4
Claims (7)
1. A roadway comprising a formation of mats flexibly linked together in end to end alignment, some of the mats being rectangular in configuration and linked together to form a straight section of the roadway, some of the mats being trapezoidal in configuration and linked together to form a curved section of the roadway.
2. The roadway as set forth in claim 1 wherein:
each rectangular mat comprises a rectangular platform formed of transverse, rectangular boards aligned in side by side formation;
each trapezoidal mat comprises a trapezoidal platform formed of transverse, trapezoidal boards aligned in side by side formation.
each rectangular mat comprises a rectangular platform formed of transverse, rectangular boards aligned in side by side formation;
each trapezoidal mat comprises a trapezoidal platform formed of transverse, trapezoidal boards aligned in side by side formation.
3. The roadway as set forth in claim 2 comprising:
a pair of rails secured to the boards and projecting upwardly from the side edges of each mat platform, to provide curbs;
whereby the boards and rails form a coherent structure.
a pair of rails secured to the boards and projecting upwardly from the side edges of each mat platform, to provide curbs;
whereby the boards and rails form a coherent structure.
4. The roadway as set forth in claim 3 comprising:
means, located at the ends of each rail, for flexibly linking a mat to an adjacent mat; and straps extending longitudinally along the underside of each mat platform and being secured to its boards to cooperate with the boards and rails to form a coherent structure.
means, located at the ends of each rail, for flexibly linking a mat to an adjacent mat; and straps extending longitudinally along the underside of each mat platform and being secured to its boards to cooperate with the boards and rails to form a coherent structure.
5. The roadway as set forth in claim 4 wherein:
the linking means at the end of each rail comprises a flat plate bolted to the rail and adjacent plates are bolted together.
the linking means at the end of each rail comprises a flat plate bolted to the rail and adjacent plates are bolted together.
6. The roadway of claim 5 wherein each mat is light enough to be carried by two men.
7. A rectangular mat for use in constructing a roadway comprising:
a flat platform of transverse rectangular boards aligned in side by side formation;
rails secured to the platform and extending upwardly along the side edges of the platform, for providing curbs;
downwardly projecting, spaced apart straps extending longitudinally of the underside of the platform and secured thereto for reinforcing and supporting the platform and cooperating with the rails and boards to form a coherent structure; and .cndot. the mats needed to be adapted to prevent a vehicle such as a quad from slipping off sideways; and .cndot. it was preferable that the mats be formed of biodegradable material As the component for constructing straight sections of the roadway, a rectangular mat is provided comprising:
.cndot. a flat platform of transverse rectangular boards aligned in side by side formation;
.cndot. rails secured to the platform to form a coherent unit therewith and extending upwardly therefrom along the side edges thereof, for providing curbs to resist sideways sliding of a quad passing over the platform;
.cndot. optionally, downwardly projecting, spaced apart straps extending longitudinally of the underside of the platform and secured to the platform, for reinforcing and supporting the platform and cooperating with the rails and boards to form a coherent structure; and .cndot. means, for example flat steel plates bolted on the ends of the rails, for flexibly linking one mat end to another in end to end alignment;
.cndot. the mat preferably being light enough to be manually conveyed by two men.
For constructing curved sections of the roadway, a mat is provided having a trapezoidal platform, formed of trapezoidally shaped boards and having side edges of unequal length.
When a roadway is formed in one embodiment, it comprises at least one linear section of rectangular mats flexibly linked together in end-to-end alignment, each such mat comprising a flat platform formed of rectangular boards, arranged side by side and secured to rails extending upwardly therefrom along the side edge portions of the platform, for providing curbs; and at least one curved section of trapezoidal mats flexibly linked together in end to end formation and to the linear section, each trapezoidal mat having a flat platform formed of trapezoidally shaped boards and side rails, the platform having side edges of unequal length.
Preferably, the mats are formed of wood and are light enough to be individually carried by two men.
a flat platform of transverse rectangular boards aligned in side by side formation;
rails secured to the platform and extending upwardly along the side edges of the platform, for providing curbs;
downwardly projecting, spaced apart straps extending longitudinally of the underside of the platform and secured thereto for reinforcing and supporting the platform and cooperating with the rails and boards to form a coherent structure; and .cndot. the mats needed to be adapted to prevent a vehicle such as a quad from slipping off sideways; and .cndot. it was preferable that the mats be formed of biodegradable material As the component for constructing straight sections of the roadway, a rectangular mat is provided comprising:
.cndot. a flat platform of transverse rectangular boards aligned in side by side formation;
.cndot. rails secured to the platform to form a coherent unit therewith and extending upwardly therefrom along the side edges thereof, for providing curbs to resist sideways sliding of a quad passing over the platform;
.cndot. optionally, downwardly projecting, spaced apart straps extending longitudinally of the underside of the platform and secured to the platform, for reinforcing and supporting the platform and cooperating with the rails and boards to form a coherent structure; and .cndot. means, for example flat steel plates bolted on the ends of the rails, for flexibly linking one mat end to another in end to end alignment;
.cndot. the mat preferably being light enough to be manually conveyed by two men.
For constructing curved sections of the roadway, a mat is provided having a trapezoidal platform, formed of trapezoidally shaped boards and having side edges of unequal length.
When a roadway is formed in one embodiment, it comprises at least one linear section of rectangular mats flexibly linked together in end-to-end alignment, each such mat comprising a flat platform formed of rectangular boards, arranged side by side and secured to rails extending upwardly therefrom along the side edge portions of the platform, for providing curbs; and at least one curved section of trapezoidal mats flexibly linked together in end to end formation and to the linear section, each trapezoidal mat having a flat platform formed of trapezoidally shaped boards and side rails, the platform having side edges of unequal length.
Preferably, the mats are formed of wood and are light enough to be individually carried by two men.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2699910A CA2699910C (en) | 2010-04-13 | 2010-04-13 | Modular roadway |
| US13/083,831 US20110250014A1 (en) | 2010-04-13 | 2011-04-11 | Modular roadway |
| US13/595,691 US8616804B2 (en) | 2010-04-13 | 2012-08-27 | Modular roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2699910A CA2699910C (en) | 2010-04-13 | 2010-04-13 | Modular roadway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2699910A1 true CA2699910A1 (en) | 2011-10-13 |
| CA2699910C CA2699910C (en) | 2017-05-09 |
Family
ID=44761025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2699910A Active CA2699910C (en) | 2010-04-13 | 2010-04-13 | Modular roadway |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20110250014A1 (en) |
| CA (1) | CA2699910C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966020A (en) * | 2012-11-26 | 2013-03-13 | 张�浩 | Auxiliary climbing device for automobile |
| US9714490B2 (en) | 2015-06-09 | 2017-07-25 | 1910623 Alberta Ltd. | Bridge |
| US10577753B2 (en) | 2015-08-03 | 2020-03-03 | Sterling Site Access Solutions, Llc | Crane mat and method of manufacture |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140183319A1 (en) * | 2013-01-02 | 2014-07-03 | The Modern Group, Ltd. | Synthetic Laminated Mat |
| GB2533817A (en) * | 2015-01-05 | 2016-07-06 | Bae Systems Plc | Mobile bridge module |
| GB2533818B (en) | 2015-01-05 | 2021-03-03 | Bae Systems Plc | Mobile bridge apparatus |
| CN108239898A (en) * | 2018-01-10 | 2018-07-03 | 中铁二十二局集团第五工程有限公司 | A kind of Mountainous City transit centre construction period multilevel traffic method for organizing |
| CN110777597A (en) * | 2019-11-12 | 2020-02-11 | 中国十七冶集团有限公司 | Construction method for turnover steel temporary pavement for pipe gallery engineering |
| CN111560832A (en) * | 2020-05-18 | 2020-08-21 | 河南建筑职业技术学院 | Steel frame bridge structure of concatenation fast |
| CN113106841A (en) * | 2021-05-12 | 2021-07-13 | 中铁四局集团第二工程有限公司 | Pin-connected panel landing stage board and landing stage |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US223431A (en) * | 1880-01-13 | Cornelius bremerkamp | ||
| US1935823A (en) * | 1931-09-11 | 1933-11-21 | William J Turner | Pavement |
| US2335556A (en) * | 1942-10-26 | 1943-11-30 | Charles N Wilson | Interlocking decking panel |
| US4289420A (en) * | 1979-06-06 | 1981-09-15 | Davis Marvin L | Wooden mat |
| US4376596A (en) * | 1980-04-16 | 1983-03-15 | Green M L | Portable roadway |
| US4875800A (en) * | 1988-01-22 | 1989-10-24 | Way Construction, Inc. | Temporary support surfaces for use on muddy or marshy land areas |
| US5163776A (en) * | 1988-02-29 | 1992-11-17 | Pouyer Joseph E | Method for road construction |
| US5087149A (en) * | 1989-04-14 | 1992-02-11 | Waller Jr A J | Interlocking wooden mat roadway |
| US5457837A (en) * | 1994-01-21 | 1995-10-17 | Zuckerbrod; Pamelia | Portable tracks for a wheelchair |
| US5822944A (en) * | 1996-09-04 | 1998-10-20 | Penland, Sr.; Joe E. | Double locking flooring system for a construction site |
| SE513070C2 (en) * | 1998-02-10 | 2000-07-03 | Gunnar Englund Byggare Ab | Safety barrier intended to be placed between different lanes of a road |
| US7608313B2 (en) * | 2004-06-04 | 2009-10-27 | Martin Marietta Materials, Inc. | Panel apparatus with supported connection |
| US7427172B2 (en) * | 2006-03-31 | 2008-09-23 | Champagne Editions, Inc. | Temporary roadway element |
-
2010
- 2010-04-13 CA CA2699910A patent/CA2699910C/en active Active
-
2011
- 2011-04-11 US US13/083,831 patent/US20110250014A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966020A (en) * | 2012-11-26 | 2013-03-13 | 张�浩 | Auxiliary climbing device for automobile |
| CN102966020B (en) * | 2012-11-26 | 2015-02-11 | 吴海锋 | Auxiliary climbing device for automobile |
| US9714490B2 (en) | 2015-06-09 | 2017-07-25 | 1910623 Alberta Ltd. | Bridge |
| US10577753B2 (en) | 2015-08-03 | 2020-03-03 | Sterling Site Access Solutions, Llc | Crane mat and method of manufacture |
| US11124925B2 (en) | 2015-08-03 | 2021-09-21 | Sterling Site Access Solutions, Llc | Crane mat and method of manufacture |
| US11566385B2 (en) | 2015-08-03 | 2023-01-31 | Sterling Site Access Solutions, Llc | Crane mat and method of manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110250014A1 (en) | 2011-10-13 |
| CA2699910C (en) | 2017-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20150210 |