Patents Assigned to Plastro-Guat
  • Static sprayer including protective cover
    Patent number: 5381959
    Abstract: A static sprayer includes a housing mountable in a vertical position, a diverter fixed to the housing for diverting the water from a vertically-extending passageway within the housing laterally through the water discharge outlet at the upper end of the housing, and a cover mounted for vertical movement at the upper end of the housing towards and away from the diverter to cover and uncover the water discharge outlet.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: January 17, 1995
    Assignee: Plastro Guat
    Inventor: Valish Malkin
  • Moisture-responsive valve assembly
    Patent number: 4989628
    Abstract: A moisture-responsive valve assembly includes a housing having a moisture-swellable body to swell in volume in response to soil moisture, and a bi-stable snap-action device for controlling the valve in response to the volume of the moisture-swellable body. The valve assembly further includes a damped delay mechanism effective to close the valve after it has been open for a predetermined period of time.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: February 5, 1991
    Assignees: Plastro-Guat, Asroteam Consultants Ltd., Jacob Gil
    Inventors: Jacob Gil, Zvi Rubinstein, Yoram Hadar