Airport bridge and lift
AssigneeFredrick Keish
InventorsWilliam Clay Ratliff, Fredrick Keish, James Angel, William Dorrough
Life of this patent
Estimating the term…
Abstract
A lift is coupled to the outer cab of a telescoping bridge. The lift has a carriage that can be moved by a cable and a motor upward or downward and which includes a platform that has sensing means for controlling the motor for stopping downward movement of the carriage when it engages the ground. An electrically operated safety catch is provided to prevent the carriage from falling in the event the cable breaks. A safety system is provided which prevents the bridge from moving if the carriage is not in the up position and its door is not closed.
Claims5
A system for use for the passage of persons and items between an airport building and an airplane, comprising:
- a walkway comprising;
- a passage means supported for rotation about a vertical axis next to said building;
- a cab having a first port adapted to be coupled to a port of an airplane for the passage of persons;
- a plurality of sections with each section having a rear end and a front end with a passage formed therethrough;
- said plurality of sections comprising a rear section having its rear end coupled to said passage means and a forward section having its forward end coupled to said cab;
- each of said sections being telescopically coupled to an adjacent section with said front end of said section adjacent to said forward section being movable within said forward section, such that said walkway from said passage means may be expanded and contracted;
- said cab having a second port for the passage of luggage and other items;
- a housing coupled to the exterior of said cab with an opening located in line with said second port;
- said housing having a lower opening;
- a carriage supported for movement in said housing for supporting luggage and other items;
- means for lowering said carriage downward to the ground and upward into said housing by way of said lower opening for transporting luggage and other items between said cab and the ground.
Dependencies are inferred from the claim text.