Patents Assigned to Schwihag GmbH
  • Patent number: 5628454
    Abstract: A sole, ribbed or slide chair plate for a foot of a railroad rail provided with two spaced flat bearing surfaces between which is a concave surface allowing for non tipping of the rail when in place if the bottom of the rail has a convex surface and a shim fitting on top of the plate having a top surface composed of two spaced flat bearing surfaces between which is a concave surface.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: May 13, 1997
    Assignee: Schwihag GmbH
    Inventors: Armin Heim, Otto Morgenschweis
  • Patent number: 5562267
    Abstract: A box sleeper (1), characterized by a steel box-like sleeper section member (5) which has a cross-sectional width (15) and a cross-sectional height (16) matching that of a normal concrete or wooden sleeper and has an open part (31) on top and is closable at its ends by transverse plates (17 and 18) and has laterally projecting bearing flanges (13 and 14) for stockrail fasteners (28, 29), points-tongue slide chairs (30) and/or operating components of tip fasteners. The box-like sleeper section member (5) is associated with tip fasteners in the form of "latch fasteners" (33) comprising stationary guides (32) and movable latches (34), cam rods (34) and cam-rod bearings (37), all of which project into the upper part (31) of the box-like sleeper section member (5), whereas the bottom part houses the points-tongue slide rods (54), the tongue-monitoring linkage (45), heating rods (43) if any, and shock-absorbing elements (38).
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: October 8, 1996
    Assignee: Schwihag GmbH
    Inventors: Armin Heim, K. Ohm, K Spiegel, Rudolf Kopl, Jurgen Kruger, Volker Klein, Hans-Joachim Scholte
  • Patent number: 4770343
    Abstract: A resilient rail fixing device for track installations with good torsional resistance and positive lateral hold for the rail has a design whih ensures the straightforward production of the clamp clips (3) and the secure co-operation of the clamp clips (3) with the anchoring parts (1,2). The clamp clip (3) is produced as a flexible moulding of cold-bendable steel and has four resilient rod sections (31', 34' and 31", 34") as abutment legs (3' and 3"). Each bracing part (26', 26") of the clamp clip (3) is shaped integrally onto two independent resilient rod secions (31' and 34' or 31' and 34") which have been stressed to torsion. Two inner resilient rod sections (31' and 31") are produced integrally with a transverse connecting piece (33), while the two outer resilient rod sections (34' and 34") are supportd by U-Shaped deflections (35' and 35") on the top of the transverse connecting piece (33).
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: September 13, 1988
    Assignees: Schwihag GmbH, Karl Richtberg GmbH & Co. KG
    Inventors: Armin Heim, Siegfried Keusch, Karl H. Schwiede