Three ply bolted temporary road mats and apparatus for...

Details Three ply bolted temporary road mats and apparatus for... Three ply bolted temporary road mats and apparatus for...

2007-05-01

2007-05-01

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S563000, C029S564000, C029S02600B, C029S281500, C408S025000, C408S046000, C408S053000

Reexamination Certificate

active

10750272

ABSTRACT:
An apparatus for making temporary road mats characterized by multiple layers of mutually perpendicular elongated timbers having an array of vertical intersections aligned in lateral rows. The apparatus includes a gang drill that moves relative to a roughly assembled mat for sequentially drilling the lateral rows of intersections.

REFERENCES:
patent: 410784 (1889-09-01), Colville
patent: 4410024 (1983-10-01), Folse, Sr.
patent: 4462712 (1984-07-01), Penland, Sr.
patent: 5032037 (1991-07-01), Phillips et al.
patent: 6523243 (2003-02-01), Phillips et al.
patent: 6745452 (2004-06-01), Harrison

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