Abstract The invention relates to improved means used to fold and/or unfold a portable building of the type in which members are hingedly connected to a rigid central section to reduce its external volume and facilitate transportation of the building. The rigid central section comprises a floor, walls and roof. Additional roof members are pivotally connected to the roof along opposed parallel edges so as to be movable between an extended position in which they form a continuation of the central roof, and a further position in which they are disposed parallel with the vertical walls of the central section. Additional floor members are connected to opposed parallel edges of the central section floor which are parallel with the additional roof members. The additional floor members are moveable to form an extension of the central section floor or to be parallel with the central section walls. The folding/unfolding means comprise a triangular structure which is removably transversely secured to each additional roof member, a flexible cable extending between the respective triangular structures and means for increasing or decreasing the length of cable to effect simultaneous, opposite pivotal movement of the additional roof members.
An apparatus to fold and/or unfold an portable building of the type in which additional roof, end wall and floor members being connected to a rigid central section by hinge means comprising: (a) a pair of triangular structures each of which has an arm which projects upwardly and outwardly relative to said rigid central section in the unfolded position of said additional roof member; (b) means for removably securing each of said triangular structures to its respective additional roof member along the transverse direction of said additional roof member, (c) a winch mounted on one of said arm at the end of the arm distal from the portable building, and (d) a cable extending between said winch and said other arm, whereby when said winch is actuated to wind up said cable both said additional roof members unfold.
Claim 2
Independent Claim
138 words
An apparatus to fold and/or unfold an portable building of the type in which additional roof, end wall and floor members being connected to a rigid central section by hinge means comprising: (a) a pair of triangular structures each of which has an arm which projects upwardly and outwardly relative to said rigid central section in the unfolded position of said additional roof member; (b) means for removably securing each of said triangular structures to its respective additional roof member along the transverse direction of said additional roof member, (c) a winch mounted on one of said arm at the end of the arm distal from the portable building, and (d) a cable extending between said winch and said other arm, whereby when said winch is actuated to wind up said cable both said additional roof members unfold.
Claim 3
Dependent Claim
29 words
An apparatus to fold and/or unfold a portable building as recited in claim 1 wherein each said triangular structure, includes means for collapsibly folding each of said triangular structures.
Claim 4
Dependent Claim
118 words
An apparatus to fold and/or unfold a portable building as recited in claim 1 or 2 in which each triangular structure comprises: (a) a first tubular member bolted in the longitudinal direction on said additional roof member, near the side of said additional roof member which is distal from the central section, (b) a second tubular member, parallel with the first tubular member, which leans against the additional roof member, near the side which is proximate to the central section, (c) a third tubular member extending between and secured to said first and second tubular members; and (d) a fourth tubular member, secured near the end of said third tubular member which is near said second tubular member.