Gate screw backup system

Details Gate screw backup system Gate screw backup system

1994-04-22

1996-06-25

Redman, Jerry

Movable or removable closures

Optionally moved, manually, or by motor

49506, E05F 1500

Patent

active

055288600

ABSTRACT:
A backup system is provided for a gate screw assembly of a race car transport trailer. The gate screw assembly includes a pair of screws which are rotated by an electric motor and interconnecting linkage arms so as to raise and lower the gate. The backup system includes rotatable shafts operatively connected to the drive shaft of the motor. Upon failure of the motor, the shafts of the backup system can be rotated by a drill or a wrench, thereby rotating the motor drive shaft, the linkage arms, and the gate screws, so that the gate can be moved between the raised and lowered positions.

REFERENCES:
patent: 1858624 (1932-05-01), Hess et al.
patent: 2366734 (1945-01-01), Lear
patent: 2684239 (1954-07-01), Gaffney
patent: 2719036 (1955-09-01), Brundage

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