Patent ID: 8141686
Filing Date: 2012-03-27
Classification: B66B

Abstract:
1. A lifting device for transportation between one floor to another floor in a building having at least two floors, said building having a wall corner formed at an intersection of a first wall and a second wall of a room in said building and also having a lowermost floor of said building being served by said lifting device and an uppermost floor of said building being served by said lifting device, said lifting device comprising: a. a first guide rail located at a right angle corner and mounted adjacent to said first wall at a location spaced from said corner, said first guide rail located at a right angle corner and extending between the floor of the lowermost floor and the ceiling of the uppermost floor, said first wall extending from said corner to a location further from said corner than said first guide rail; b. a second guide rail located at a right angle corner and mounted adjacent to said second wall at a location spaced from said corner, said second guide rail located at a right angle corner and extending between the floor of the lowermost floor and the ceiling of the uppermost floor, said second wall extending from said corner to a location further from said corner than said second guide rail; c. a corner guide rail mounted adjacent to said wall corner, said corner guide rail extending between the floor of the lowermost floor and the ceiling of the uppermost floor, wherein said first guide rail located at a right angle corner, said second guide rail located at a right angle corner and said corner guide rail are each formed to have a cross-section generally in the shape of the letter C; d. a lift container having a top wall, a bottom wall, a first side wall and a second side wall, said lift container having the configuration of a right triangle with said first side wall being one leg of the right triangle and said second side wall being the other leg of the right triangle and having a door opening along a hypotenuse of the triangle, said lift container having guide members positioned on each of three extreme corners thereon to guide the lift container along said guide rails and to allow the lift container to move vertically along said guide rails, said guide members each being located on an extreme corner of said right triangle whereby each guide member is adjacent to two of three legs of the right triangle, said three legs being said first leg, said second leg and said hypotenuse wherein said lifting device also has a right triangular cross sectional configuration which corresponds to the configuration of said lift container; and e. drive means to move the container vertically upward and vertically downward to desired locations between the lowermost floor and the uppermost floor.