Bridge sleeper supporting pad

Details Bridge sleeper supporting pad Bridge sleeper supporting pad

2007-02-01

2009-12-22

Singh, Sunil (Department: 3672)

Bridges

Expansion device

Reexamination Certificate

active

07634832

ABSTRACT:
The invention aims at providing a bridge sleeper supporting pad for eliminating necessity of a recess to fit a projection of a rivet of a bridge beam, on a back face of a bridge sleeper or enhancing plate. For this, the invention provides a bridge sleeper supporting pad interposed between a bridge beam and bridge sleeper, including a main bag, first inner bag and second inner bag in the main bag, wherein the first inner bag contains a first reaction solution, the second inner bag contains a second reaction solution, the respective first and second inner bags are designed so that at least a part thereof opens under external pressure, the main bag is provided in communication with a sub bag, and the sub bag includes a plurality of compartments formed therein, the respective compartments partitioned by a sealed portion having a sealed portion with an inside easily peeled.

REFERENCES:
patent: 4120164 (1978-10-01), Tomlin
patent: 4462224 (1984-07-01), Dunshee et al.
patent: 5454866 (1995-10-01), Gilbert et al.
patent: 5494190 (1996-02-01), Boettcher
patent: 6186998 (2001-02-01), Inuzuka et al.
patent: 6491159 (2002-12-01), Shibata
patent: 6743451 (2004-06-01), Rasile et al.
patent: 7293646 (2007-11-01), Masuda et al.
patent: 82132 (1983-06-01), None

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