Railroad crossing warning gate

Details Railroad crossing warning gate Railroad crossing warning gate

1986-07-21

1987-04-07

Kannan, Philip C.

Movable or removable closures

Mounted for multidirectional or oblique movement

Swings on plural axes; e.g., pivotal link arms

49 9, 49 49, 49237, E05D 1540, E01F 1300

Patent

active

046550020

ABSTRACT:
To prevent breakage, an end section that can be positioned across a roadway is connected through a slanting pivot to a supporting section, the raised and lowered positions of the supporting section being under control of a usual standard. The pintle of a hinge for the pivot lies along slanting abutting ends of the supporting section and the end section such that the end section while the sections are horizontal is maintained in position by gravity. An L-shaped latching device has a weight at one end, an intermediate pivot, and a latch at the other end to latch the sections together by gravity while the sections are raised from a horizontal position, the latch retaining said end section upright while the supporting section is fully raised.

REFERENCES:
patent: 1271877 (1918-07-01), Farman
patent: 1592972 (1926-07-01), Farnsworth
patent: 1665157 (1928-04-01), Dahnke
patent: 1997199 (1935-04-01), Pranger
patent: 4531325 (1985-07-01), Phillips

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