Railroad turnouts
US4005839A · kind A · utility
14Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Sep 22, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B7/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railroad turnout including a switch having runoff plates with stop lugs spaced farther apart than the width of the switch point base so that flexure of the switch points downstream of the heel spread is permitted. Floating heel blocks are affixed to the stock rails at the heel point to maintain the conventional heel spread. A smooth ride through the turnout is further assured by additional switch rods, uniform risers in the switch and guard rails associated with the frog of the turnout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.