Abstract: This disclosure relates to agricultural canopies used primarily to control the amount of light, moisture and heat reaching growing plants within the canopy footprint. More specifically, it relates to mechanisms for pulling a flexible canopy over a support structure and then for removing the canopy to uncover the structure and the plants below. The mechanisms include an arm mounted rotationally on a base. When the arm is rotated in one direction the canopy is pulled over the support structure and when the arm is rotated in the other direction the canopy is pulled off the support structure.

Abstract: This disclosure relates to agricultural canopies used primarily to control the amount of light and/or moisture and/or heat reaching growing plants within the canopy footprint. More specifically, it relates to mechanisms for pulling a flexible canopy over a support structure and then for removing the canopy to uncover the structure and the plants below. The mechanisms include an arm mounted rotationally on a base. When the arm is rotated in one direction the canopy is pulled over the support structure and when the arm is rotated in the other direction the canopy is pulled off the support structure.

Abstract: This disclosure relates to agricultural canopies used primarily to control the amount of light and/or moisture and/or heat reaching growing plants within the canopy footprint. More specifically, it relates to mechanisms for pulling a flexible canopy over a support structure and then for removing the canopy to uncover the structure and the plants below. The mechanisms include an arm mounted rotationally on a base. When the arm is rotated in one direction the canopy is pulled over the support structure and when the arm is rotated in the other direction the canopy is pulled off the support structure.

Abstract: This disclosure is for an automated canopy greenhouse having a motor driven canopy that is pulled over curved arch supports. The greenhouse has a generally rectangular base framework to which the arches are attached, the outside of the structure having the general shape of a cylinder cut lengthwise and resting on its flat side. A canopy or tarp is wound around a drum positioned near the bottom of one of the long sides. A shuttle bar is attached to two trolleys each of which ride on an arch at each end of the greenhouse. The trolleys are motor driven. One end of the canopy is attached to the shuttle bar and closes or opens the greenhouse as the trolleys and shuttle bar are moved. Inside the drum there is a torsion spring that is preloaded to balance the load of the canopy and associated hardware as the canopy is being raised or lowered. Successive greenhouse units may be attached to a first greenhouse unit that has the motor, and tarps on the successive units may be closed or opened using the same motor.

Abstract: This disclosure is for an automated canopy greenhouse having a motor driven canopy that is pulled over curved arch supports. The greenhouse has a generally rectangular base framework to which the arches are attached, the outside of the structure having the general shape of a cylinder cut lengthwise and resting on its flat side. A canopy or tarp is wound around a drum positioned near the bottom of one of the long sides. A shuttle bar is attached to two trolleys each of which ride on an arch at each end of the greenhouse. The trolleys are motor driven. One end of the canopy is attached to the shuttle bar and closes or opens the greenhouse as the trolleys and shuttle bar are moved. Inside the drum there is a torsion spring that is preloaded to balance the load of the canopy and associated hardware as the canopy is being raised or lowered. Successive greenhouse units may be attached to a first greenhouse unit that has the motor, and tarps on the successive units may be closed or opened using the same motor.