	US 7,360,814 B2
	Interior space expansion system
Leo L. Castagno, 3942 W. 1000 N., Rexburg, Id. 83440 (US); Melvin Price, 1449 S. Industrial Pkwy., Heber City, Utah 84032 (US); James L. Spillman, 1286 E. Manfield Way, Draper, Utah 84020 (US); Bradley M. Price, 211 E. Greenfield Cir., #122, Heber City, Utah 84032 (US); and Robert L. Bonner, 21941 W. Beacon La., Wittman, Ariz. 85361 (US)
Filed on Dec. 02, 2005, as Appl. No. 11/164,734.
Prior Publication US 2007/0126252 A1, Jun. 07, 2007
Int. Cl. B62D 33/08 (2006.01)

U.S. Cl. 296—26.05 [296/26.04]

16 Claims

1. An interior space expansion system for use with a structure needing collapsible and expandable space, comprising:

a) a base structure having an aperture therethrough;

b) a movable structure substantially disposed within a central region of the base structure when in a sunken position and substantially exterior the base structure when in an elevated position;

c) a lifting system coupled to the base structure and the movable structure, wherein the lifting system transitions the movable structure between the sunken and elevated positions through the aperture, the lifting system not substantially disposed within the central region of the base structure when the movable structure is in the elevated position, wherein the lifting system comprises:

c1) a pulley system disposed within the base structure; a flexible member through the pulley system and mechanically coupled to the base structure and to the movable structure such that an alteration of an effective length of the flexible member transitions the movable structure between the sunken and elevated positions through the aperture; and

c2) a motivator functionally coupled to the flexible member such that activation of the motivator alters the effective length of the flexible member;

d) a support, for providing support to the pulley system, coupled to the base structure; and

e) a footing extending horizontally from the movable structure and functionally coupling the flexible member thereto.