Pipe and strap operating drive system for door mechanisms and similar structures

A pipe and strap operating drive apparatus for positioning a door mechanism of a certain size, the door mechanism having a traveling edge and a hinged edge, which door mechanism (a) is hingedly attached to a structure, and (b) is proximate a correspondingly-sized opening in the structure, wherein the apparatus positions the door mechanism at any desired hinged position between fully closed flush over the opening, or spaced apart from the opening, the apparatus comprising

• a length of pipe, two braces, two each of pipe sleeves, straps, guide brackets, roller pins, fasteners, bolt clips, and further comprising a plurality of hexagonal head locking setscrews for fastening the pipe sleeves onto the pipe;
• wherein
• the pipe is supported, at each end, within the respective braces, each brace further having a circular collar, the interior of the collar corresponding to the outer diameter of the pipe, thereby enabling axial rotation of the pipe within the collars, each brace further being fastened to the structure so as to provide co-axial alignment of the circular collars;
• two pipe sleeves symmetrically spaced lengthwise, and affixed to, the outer surface of the pipe;
• each guide bracket affixed to the structure, at respective locations directly opposite the midpoint of the width of each pipe sleeve, each guide bracket containing a freely-rotating roller pin;
• each strap attached at its first end to the exterior of each respective pipe sleeve, routed through the respective guide bracket to thereby contact the contained roller pin, and attached at its second end to a bolt clip, said bolt clip being affixed to the exterior surface of the door mechanism;
• whereby
• axial rotation of the pipe in one direction causes the pipe sleeves to simultaneously rotate, thereby coiling each strap about its respective pipe sleeve, moving toward the fully-closed position of the door mechanism, and conversely, upon rotation of the pipe in the opposite direction, causes each strap to uncoil from the pipe sleeve, moving toward the open position of the door mechanism.

A pipe and strap operating drive apparatus for positioning a ventilation door of a poultry house, the ventilation door being of planar and having a traveling edge and a hinged edge, by means of which the ventilation door (a) is hingedly attached to a vertical wall of the poultry house, and (b) is proximate a correspondingly-sized opening in the vertical wall, wherein the apparatus positions the ventilation door at any desired hinged position between fully closed flush over the opening, or spaced apart from the opening, the apparatus comprising:

• a length of pipe, two braces, two each of pipe sleeves, straps, guide brackets, roller pins, fasteners, bolt clips, and further comprising a plurality of hexagonal head locking setscrews for fastening the pipe sleeves onto the pipe;
• wherein
• the pipe is supported, at each end, within the respective braces, each brace further having a circular collar, the interior of the collar corresponding to the outer diameter of the pipe, thereby enabling axial rotation of the pipe within the collars, each brace further being fastened to the vertical wall so as to provide co-axial alignment of the circular collars;
• two pipe sleeves symmetrically spaced lengthwise, and affixed to, the outer surface of the pipe;
• each guide bracket affixed to the vertical wall, at respective locations directly opposite a midpoint of the width of each pipe sleeve, each guide bracket containing a freely-rotating roller pin;
• each strap attached at a first end to the exterior of each pipe sleeve, routed through the respective guide bracket to thereby contact the contained roller pin, and attached at a second end to a bolt clip, said bolt clip being affixed to an exterior surface of the ventilation door;
• whereby
• axial rotation of the pipe in one direction causes the pipe sleeves to simultaneously rotate, thereby coiling each strap about respective pipe sleeve, moving the ventilation door toward the fully-closed position, and conversely, upon rotation of the pipe in the opposite direction, causes each strap to uncoil from the pipe sleeve, moving the ventilation door toward the open position.