Patents Assigned to Cravo Equipment Ltd.
  • Drainage system for retractable roof
    Patent number: 5809701
    Abstract: A roof structure to protect a crop growing area includes a retractable roof membrane or curtain that defines pitched sections of the roof. The membrane extends across the valley between pitched sections and apertures are provided in the membrane to allow water to pass through the membrane. A gutter is disposed in the valley beneath the apertures to collect water and discharge it away from the crop growing area.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: September 22, 1998
    Assignee: Cravo Equipment Ltd.
    Inventor: Richard Vollebregt
  • Drainage system for retractable roof
    Patent number: 5581954
    Abstract: A roof structure to protect a crop growing area includes a retractable roof membrane or curtain that defines pitched sections of the roof. The membrane extends across the valley between pitched sections and apertures are provided in the membrane to allow water to pass through the membrane. A gutter is disposed in the valley beneath the apertures to collect water and discharge it away from the crop growing area.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: December 10, 1996
    Assignee: Cravo Equipment Ltd.
    Inventor: Richard Vollebregt
  • Drainage system for retractable roof
    Patent number: 5513470
    Abstract: A roof structure to protect a crop growing area includes a retractable roof membrane or curtain that defines pitched sections of the roof. The membrane extends across the valley between pitched sections and apertures are provided in the membrane to allow water to pass through the membrane. A gutter is disposed in the valley beneath the apertures to collect water and discharge it away from the crop growing area.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: May 7, 1996
    Assignee: Cravo Equipment Ltd.
    Inventor: Richard Vollebregt
  • Curtain system
    Patent number: 5265373
    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.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: November 30, 1993
    Assignee: Cravo Equipment Ltd.
    Inventor: Richard Vollebregt