Patent ID: 9655800
Date: 2017-05-23
CPC Classifications: A61G

Claim:
1. A support apparatus having a retracted position and an extended position, comprising: a first housing assembly including a first housing containing a first at least one wheel or roller; a main frame extending along a length of said support apparatus, forming an open space therewithin; a flexible first sheet substantially coiled around said first at least one wheel or roller in said retracted position, said first sheet substantially uncoiled from said first at least one wheel or roller in said extended position; a flexible second sheet substantially coiled within said first housing assembly in said retracted position, said second sheet substantially uncoiled and extending out of said first housing assembly into said open space in said extended position; and a double roller assembly having ends disposed within said main frame during transition to and from said extended position, said double roller assembly including a lead roller and a trail roller that are vertically and horizontally displaced from one another, said lead roller and said trail roller directly or indirectly coupled to one another such that said lead roller and said trail roller jointly and mutually travel along said main frame during transitions between said retracted position and said extended position, said first sheet disposed around said lead roller and having an end affixed to said first housing assembly, said second sheet disposed around said trail roller and also having an end affixed to said first housing assembly; a second housing assembly disposed on an opposite side of said main frame from said first housing assembly, said second housing assembly including a second housing containing a third wheel or roller; a chain or belt assembly including a chain or belt disposed around said third wheel or roller, said chain or belt assembly having a first end affixed to said double roller assembly, wherein said support apparatus transitions from said retracted position to said extended position by said first at least one wheel or roller rotating in a manner to extend said first and second sheets into and along said open space, and wherein said support apparatus transitions from said extended position to said retracted position by said first at least one wheel or roller rotating in a manner to retract said first and second sheets out of said open space and toward said first housing assembly.