Title:
RESILIENT RAIL FASTENING DEVICE
Document Type and Number:
WIPO Patent Application WO1994025675
Kind Code:
A3
Abstract:
A resilient rail fastening device (4) has an elastic intermediate layer (8) arranged between a rail foot (2) and a hard support, for example a sleeper (6), provided with a profile. The compression surface (17, 18) which faces the support (6) has substantially closed marginal strips (10-13) which in turn enclose a depressed surface (17, 18) from which project individual small-surface compression point (11). Such a geometric design of the elastic intermediate layer (8) allows a certain elastic rigidity of the intermediate layer (8) to be adjusted by modifying the compression surfaces (17, 18). A thermoplastic elastomer of non-crosslinked rubber or an ethylene-vinyl acetate copolymer are preferably used for the intermediate layers (8). Such intermediate layers are particularly suitable for highly stressed railways with a W-shaped superstructure. A special injection molding tool with exchangeable plates for shaping compression surfaces of different sizes is also disclosed.
Inventors:
WIRTHWEIN UDO (DE)
Application Number:
PCT/DE1994/000496
Publication Date:
January 12, 1995
Filing Date:
April 28, 1994
Export Citation:
Assignee:
WIRTHWEIN UDO (DE)
International Classes:
E01B9/68; (IPC1-7): E01B9/68
Foreign References:
| EP0388190A1 | 1990-09-19 | |||
| DE9101339U1 | 1991-04-25 | |||
| GB2235003A | 1991-02-20 |
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