Curtain system

• US 5,265,373 A
• Filed: 01/15/1991
• Issued: 11/30/1993
• Est. Priority Date: 01/15/1991
• Status: Expired due to Fees

• Current Assignee: Cravo Equipment, Ltd.
• Original Assignee: Cravo Equipment, Ltd.
• Inventors: Vollebregt, Richard
• Primary Examiner(s): Raduazo, Henry E.
• Application Number:
  US07/642,281
• Time in Patent Office: 1,050 Days
• Field of Search: 47/17, 160/84.1, 160/DIG. 7, 160/5, 160/7
• US Class Current: 47/17
• CPC Class Codes: A01G 13/0206 Canopies, i.e. devices providing a roof above the plants
• CPC Class Codes: A01G 9/22 Shades or blinds for greenhouses, or the like
• CPC Class Codes: E04F 10/02 of flexible canopy materials, e.g. canvas ; Baldachins
• CPC Class Codes: E04F 10/0607 with guiding-sections for supporting the movable end of the blind
• CPC Class Codes: Y02A 40/25 Greenhouse technology, e.g. cooling systems therefor

Abstract

A curtain system includes two portions of a curtain each mounted on a common guide. Each portion is dimensioned to cover a predetermined area so that the portions may be deployed alternatively. One of the portions is selectively engageable with a drive cable to allow deployment of one or the other portion by the cable.

Claims

1. A curtain system to extend between a pair of horizontally spaced locations and cover a predetermined area, said system having guide means extending between said horizontally spaced locations, a curtain having first and second portions, each having an area equal to or greater than the predetermined area and each supported in seriatim on the guide means for movement along a common longitudinal path, said guide means supporting said curtain at a plurality of transversely spaced locations between opposite longitudinal edges of said curtain and drive means operable to move said portions on said guide means, said drive means being operable selectively on said portions to move one or other of said portions between a retracted configuration and a deployed configuration.

2. A curtain system according to claim 1 wherein said drive means includes a drive member and attachment means to attach each of said portions to said drive member for movement therewith, at least one of the attachment means being selectively operable to disconnect one of said portions from the drive member whereby operation of said drive means moves the other portion between said configurations without changing the configuration of the one portion on said guide means.

3. A curtain system according to claim 1 wherein connection of the one attachment means to said drive member inhibits further change in the configuration of said other portion as said drive means moves said one portion between said configurations.

4. A curtain system according to claim 3 wherein each of said portions is located adjacent one of said spaced locations when each portion is in said retracted configuration.

5. A curtain system according to claim 4 wherein said other portion is located in advance of said one portion on said guide means and said one attachment means is operable to attach a leading edge of said one portion to said drive member.

6. A curtain system according to claim 5 wherein a trailing edge of the other portion is contiguous with said leading edge of said one portion.

7. A curtain system according to claim 6 wherein a leading edge of said other portion is connected to said drive member by said attachment means and remains connected thereto during movement of said one portion between said configurations.

8. A curtain system according to claim 1 wherein each of said portions is located at a different one of said spaced locations when in said retracted configuration.

9. A curtain system according to claim 8 wherein said drive means includes a drive member and attachment means to attach each of said portions to said drive member, each of said attachment means being selectively operable to disconnect respective portions from said drive means.

10. A curtain system according to claim 2 wherein said one attachment means include a clamp moveable between open and closed positions and engageable with said drive member in said closed position.

11. A curtain system according to claim 7 wherein said one attachment means includes a link extending from the leading edge of said other portion to the leading edge of said one portion.

12. A curtain system according to claim 1 wherein said drive means includes a pair of drive members each extending between said spaced locations and moveable in a direction parallel to said common path, each drive member being attached to a respective one of said portions, said drive members being operable independently of one another to permit movement of said portions on said guide means.

13. A curtain system according to claim 11 wherein said drive member is a flexible cable and said one attachment means is selectively engageable with said cable.

14. A curtain system according to claim 13 wherein said one attachment means includes a clamp moveable between open and closed positions and engageable with said cable in said closed position.