Railroad gate arm swivel adapter spring assembly

Details Railroad gate arm swivel adapter spring assembly Railroad gate arm swivel adapter spring assembly

1995-11-17

1997-08-05

Kannan, Philip C.

Movable or removable closures

Mounted for multidirectional or oblique movement

49 34, 49 49, E05D 1556

Patent

active

056530587

ABSTRACT:
A railway gate arm assembly including a gate arm which is mounted to permit pivoting about a longitudinal axis when an external force is applied to the gate arm thereby causing the latter to swivel out of a vertical plane, and at least two torsion springs, one mounted on each side of the gate arm and having depending spring legs which engage against corresponding sides of the gate arm and bias the gate arm to a vertical position so if the gate arm is caused to swivel out of a vertical plane by an external force, it will be returned to the vertical plane by the depending spring legs when the external force is removed.

REFERENCES:
patent: 4227344 (1980-10-01), Poppke
patent: 4531325 (1985-07-01), Phillips
patent: 4655002 (1987-04-01), Everson
patent: 5442878 (1995-08-01), Flores

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