Railways: surface track – Fastenings – Clamps
Reexamination Certificate
2005-12-09
2009-12-29
Morano, S. Joseph (Department: 3617)
Railways: surface track
Fastenings
Clamps
C238S351000
Reexamination Certificate
active
07637438
ABSTRACT:
The invention relates to a rail fastener for track systems, comprising a tensioning element (1) made of an elastic material, in particular hardened spring steel that in the assembled state is fixed in place between a retaining plate (3) provided on a sleeper (2) and a fastening anchor (4) such that the tensioning element exerts a retention force on the foot (5) of a rail (6) in order to hold the rail (6) in position, the tensioning element (1) being symmetrically aligned with respect to a vertically oriented plane of symmetry (7) that is perpendicular to the longitudinal axis (8) of the rail (6). According to the invention, the tensioning element (1) has two torsion legs (1a′ and1a″), preferably extending essentially in parallel, in order to achieve stepped overload protection. The two torsion legs (1a′ and1a″) are connected to one another on the side facing away from the rail (6) by means of a connecting section (1b), and a loop-shaped clamping section (1d′ and1d″) is provided on each end (1c′ and1c″) of the torsion leg (1a′ and1a″) facing the rail (6). In the non-tensioned state of the tensioning element (1) the torsion legs (1a′ and1a″) together with the connecting section (1b) lie essentially in a first plane (9), and at least a portion of the loop-shaped clamping sections (1d′ and1d″) lie in a second plane (10). The second plane (10) is rotated about an axis (11) in relation to the first plane (9), the axis extending parallel to the sectional axis of the plane of symmetry (7) containing the first plane (9).
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Meyer Frank
Schwiede Karl-Heinz
Morano S. Joseph
Schwihag AG
Smith Jason C
Wilford Andrew
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