초록 ▼

A greenhouse for providing improved growth and environmental control for growing plants comprising a frame defining a structure having a given length and width forming a bounded, interior region for receiving plants; a flexible cover positionable over the frame for providing a roof enclosure for the

A greenhouse for providing improved growth and environmental control for growing plants comprising a frame defining a structure having a given length and width forming a bounded, interior region for receiving plants; a flexible cover positionable over the frame for providing a roof enclosure for the structure; an elongate roller substantially extending along the length of the structure secured to a lengthwise edge of the cover; and a power source coupled to the roller for travel therewith operable for rotatably driving the roller about its longitudinal axis to retract or extend the cover relative to the frame.

대표청구항 ▼

A greenhouse construction for providing improved growth and environmental control for growing plants comprising: frame means defining a structure having a given length and width forming a bounded, interior region for receiving plants; flexible cover means positionable over the frame means for provid

A greenhouse construction for providing improved growth and environmental control for growing plants comprising: frame means defining a structure having a given length and width forming a bounded, interior region for receiving plants; flexible cover means positionable over the frame means for providing a roof enclosure for the structure; elongate roller means substantially extending along the length of the structure secured to a lengthwise edge of the cover means; power drive means including a motor coupled to the roller means for travel therewith operable for rotatably driving the roller means about its longitudinal axis to retract and extend the cover means relative to the frame means; and stabilizing means including a flexible tether interconnecting the power driven means to a stationary support for limiting the rotation of the power driven means about the longitudinal axis of the roller means as the power driven means and roller means travel along the frame means, whereby the power driven means is prevented from spinning freely while rotatably driving the roller means.