Patents Assigned to Ingenieursbureau voor Systemen en Octrooien "Spanstaal" B. V.
  • Suction dredger and method of loading the same
    Patent number: 4245932
    Abstract: In a method of loading a suction dredger in which a suspension of sand and ater is pumped into the hold an effluent device is intermittently passed to lower and lower levels in dependence upon the weight of the load in the hold to an extent such that the suction dredger remains loaded substantially up to its maximum permissible carrying capacity.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: January 20, 1981
    Assignees: Ingenieursbureau voor Systemen en Octrooien "Spanstaal" B. V., Ballast-Nedam Groep N.V., Amsterdamse Ballast Bagger en Grond (Amsterdam Ballast Dredging) B. V., Scheepswerf en Machinefabriek "De Liesbosch" B.V.
    Inventor: Gerrit H. van Zeggelaar