Guide groove at bridge sections or the like of portable bridges

Details Guide groove at bridge sections or the like of portable bridges Guide groove at bridge sections or the like of portable bridges

1994-09-23

1996-04-09

Britts, Ramon S.

Bridges

Transportable

14 25, E01D 15133

Patent

active

055049567

ABSTRACT:
A guide groove provided in an inner lower cord of a bridge section of a portable bridge includes an extruded profile section which is comprised of a vertical strip having an upper end and a lower end, and being composed of, over its entire height in at least a partial cross section thereof, a homogeneous material; and an upper wall section extending from the upper end of the vertical strip and a lower wall section extending from the lower end of the vertical strip. The guide groove has an increased service life when the vertical strip has a thickness in cross section which is reduced at the center portion of the bridge section over at least a part of the length of the bridge section in respect to at least one of the end portions of the bridge section. The guide groove is repairable by a method in which an insertion element is replaced, the insertion element being provided over a part of the length of the bridge section in which the thickness in cross section of the vertical strip is not reduced. The insertion element has an L-shaped profile including a horizontal leg which forms the lower wall section and a vertical leg which forms a part of the vertical strip, which vertical leg can be releasably fastened on the vertical strip, and wherein the vertical strip and the vertical leg of the insertion element have corresponding contact surfaces.

REFERENCES:
patent: 5042102 (1991-08-01), Kahmann et al.
patent: 5063630 (1991-11-01), Wiedeck
patent: 5179751 (1993-01-01), Wiedeck

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