Patents Assigned to Bilskade-Service HB
  • Patent number: 4624080
    Abstract: A blasting apparatus having a pistol with at least one nozzle for ejecting blasting material. The pistol has a screening device with an outer opening for placement against a workpiece. A suction channel in the screening device is connected to a suction unit. The suction channel opens partly into the screening device and partly into an opening actuated by a trigger. A control unit keeps the supply of compressed air to the nozzle closed when the under-pressure in the suction channel is less than a predetermined level which exists when one or both openings are open. The control unit allows compressed air to reach the nozzle when an underpressure lower than the above-mentioned pressure level exists, which happens when both openings are almost closed. Thus, blasting can only take place when the opening of the screening unit is closed by the workpiece and when at the same time the trigger is actuated.
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: November 25, 1986
    Assignee: Bilskade-Service HB
    Inventor: Klas Jakobsson