Plastic knuckle pin
AssigneeZeftek, Inc.
InventorsMichael K. Burke, John D. Anderson
Life of this patent
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Abstract
An improved plastic knuckle pin for a coupler on a railway car and a method of making the improved plastic knuckle pin whereby the improved plastic knuckle pin has a substantially uniform material matrix and the method of making the pin increases uniformity in the material by increasing the surface cooling area which decreases air and moisture pockets in the material during the molding process.
Claims12
A plastic knuckle pin for a coupler on a railway car comprising:
- a shaft having a plurality of longitudinally spaced apart and circumferentially arranged slots;
- a head on one end of the shaft;
- and
- means at the end of the shaft opposite the head for locking the pin in the coupler.
A knuckle pin for a coupler on a railway car comprising:
- a solid plastic shaft having a plurality of round and oval slots circumferentially spaced around the shaft;
- a solid plastic head on one end of the shaft;
- and
- means at the end of the shaft opposite the head for locking the pin in the coupler.
A plastic knuckle pin for a coupler on a railway car comprising:
- a shaft having fluting along its length;
- a head on one end of the shaft;
- means at the end of the shaft opposite the head for locking the pin in the coupler;
- and
- surface relieved portions along the shaft where bending forces can be expected and the fluting including at least one slot in said relieved portions.
A plastic knuckle pin for a coupler on a railway car comprising:
- a shaft having a plurality of slots circumferentially arranged therearound;
- a head on one end of the shaft;
- means at the end of the shaft opposite the head for locking the pin in the coupler;
- and
- the locking means including self-locking legs on the end of the shaft opposite the head.
Dependencies are inferred from the claim text.