Patent ID: 9295202
Filing Date: 2016-03-29
CPC Classification: A01G,Y02A

Claim Text:
1. A canopy system for covering growing vegetation over a coverage area comprising: a canopy support structure having four sides and resting at or near the ground level of the vegetation and encompassing an approximately rectangular coverage area; an approximately semicircular near drive frame at one side of the canopy support structure; an approximately semicircular far drive frame at a second side of the canopy support structure opposite to the near drive frame; a first trolley assembly riding on the near drive frame; a second trolley assembly riding on the far drive frame; a shuttle bar attached to the first and second trolley assemblies; said shuttle bar being approximately horizontal to the ground; a drum along a third side of the canopy support structure; a tarp at least partially wound around the drum; the tarp having a leading edge; the leading edge attached to the shuttle bar; a motor coupled to a trolley chain for moving said first and second trolley assemblies along said near and far drive frames; wherein when the first and second trolley assemblies move on the near and far drive frames the shuttle moves the tarp leading edge along an approximately hemispherical path; and, a torsion spring assembly coupled to the shuttle bar for balancing the load of the shuttle bar, first and second trolley assemblies and tarp.