Bridges – Transportable
Patent
1985-05-28
1987-10-13
Leppink, James A.
Bridges
Transportable
404 1, E01D 100
Patent
active
046988661
ABSTRACT:
An improved construction of a movable bridge structure which comprises a plurality of segment block means consisting of at least one self-propelled block means and at least one non-propelled block means adapted to be coupled releasably with the adjacent self-propelled block means, and translating means adapted to have the non-propelled block translated onto and out of the adjacent self-propelled block means. Also, there is provided an improved movable bridge structure, which comprises, in combination, a pair of central bridge element means each having an overhung portion formed integrally with and extending from the front end of a road or ground plate member held on a self-propelled carrier and having a front driving cockpit suspended downwardly and shiftably forwardly and rearwardly from the lower surface of the overhung portion; and a pair of ramp block means including a pair of trailing ramp segment means adapted to be coupled releasably with each of the bridge element means and adapted to be coupled releasably with each pair of ramp segment means, and including a translating device incorporated therein for translating the ramp block means onto and out of the ramp segment means, wherein the leading end of each overhung portion on the part of each central bridge element means is operatively coupled with each other in an opposed relationship so that there is provided a central portion of the bridge structure, whereby there is defined a substantial work space under the ground plate members coupled opposedly together.
REFERENCES:
patent: 648620 (1900-05-01), Holmes
patent: 2363767 (1944-11-01), Yassin
patent: 3398984 (1968-08-01), Ajero
patent: 3811147 (1974-05-01), Dix
patent: 4144979 (1979-03-01), Leach, Jr. et al.
patent: 4235399 (1980-11-01), Shorey
patent: 4242032 (1980-12-01), Whiteman et al.
patent: 4348780 (1982-09-01), Angelo et al.
Leppink James A.
Mitsubishi Jukogyo Kabushiki Kaisha
Smith Matthew
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