Patents by Inventor Gualtiero Ghelardini

Gualtiero Ghelardini has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Distillation chamber for extracting dry-cleaning solvent from sludge
    Patent number: 5205910
    Abstract: Distillation chamber for extracting solvent from sludge, in particular for dry-cleaning machines, having a bottom shaped like a half-cylinder with a horizontal axis. The bottom is provided, in a downward position, at one end, with an outlet for extracting dried sludge. A shaft is axially and rotatably mounted in the chamber and spatula-like sectors, suitable for stirring the sludge and for pushing it toward the outlet upon the rotation of the shaft, are fixed to the shaft itself.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: April 27, 1993
    Assignee: Sodibo S.p.A.
    Inventors: Tommaso Arbizzani, Gualtiero Ghelardini
  • Controlled heating unit for extracting solvent from sludge by distillation
    Patent number: 5174864
    Abstract: Controlled heating unit for extracting solvent from sludge by distillation, in particular for dry-cleaning machines, having a sludge tank with a flattened shape which is arranged at the base of a sealed box-like chamber and above which inlets for microwaves generated by a microwave source are present, a mixer for the sludge to be treated, at least one sludge temperature sensor which switches off the microwave source when the sludge reaches a temperature which is proximate to the degradation temperature of the solvent.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: December 29, 1992
    Assignee: Sodibo S.p.A.
    Inventors: Tommaso Arbizzani, Gualtiero Ghelardini