Railways: surface track – Deadening noise
Reexamination Certificate
2000-02-11
2001-09-04
Le, Mark T. (Department: 3617)
Railways: surface track
Deadening noise
C238S109000, C238S115000
Reexamination Certificate
active
06283383
ABSTRACT:
This is a 371 of PCT/DE98/02570 filed on Sep. 2, 1998, which is based on German No. 19742544.5, filed on Sep. 26, 1997.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a rail system consisting of the following:
A line of rails with securing means;
crossties made of wood, concrete or the like;
a substructure (ballast of broken stone; solid bed), on which the crossties are supported; as well as
a crosstie shoe made of elastomeric material (i.e., rubber or a plastic similar to rubber), the sidewall of which is becoming wider upwardly and wholly or partially surrounding the crosstie, whereby the sidewall ends on its inner side in the form of a flexible lip sealingly abutting the crosstie, and has a nose with a substantially rectangular cross section and preferably located on the outer side of said sidewall within its upper zone; and whereby, furthermore, an elastic intermediate layer is present between the crosstie shoe and the underside of the crosstie.
2. The Prior Art
Based on the prior art outlined above, which is described in greater detail in German laid-open patent specification 43 35 516 A1, the problem is to provide a rail system with with crosstie shoes in which both horizontal rigidity and vertical shock absorption are assured in an optimal way primarily in view or the type of construction of solid beds, which is increasingly becoming more important.
SUMMARY OF THE INVENTION
Now, said problem is solved in that
the sidewall of the crosstie shoe has a system of ribs and grooves on its inner side; and
the elastic intermediate layer is provided with channels extending in the form of strands substantially disposed in one plane, whereby two geometries of channels appear, which are arranged alternating with each other.
REFERENCES:
patent: 5165598 (1992-11-01), Ortwein
patent: 5312038 (1994-05-01), Merlanti et al.
patent: 5551631 (1996-09-01), Cailliau
patent: 5725149 (1998-03-01), Goossens
patent: 27 51 346 (1979-05-01), None
patent: 39 35 354 (1991-04-01), None
patent: 43 33 243 (1995-04-01), None
patent: 43 35 516 (1995-04-01), None
patent: 0 672 789 (1995-09-01), None
patent: 0 751 257 (1997-01-01), None
patent: 0 795 645 (1997-09-01), None
patent: 2 137 267 (1984-10-01), None
patent: WO82 02225 (1982-07-01), None
Blank Helmuth
Pahl Bernd
Collard & Roe P.C.
Le Mark T.
Phoenix Aktiengesellschaft
LandOfFree
Rail system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rail system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rail system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2545955