Patents by Inventor Silvana Pasqualotto

Silvana Pasqualotto 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).

  • Fluid-operated miniature engine
    Patent number: 4885978
    Abstract: Miniature engine operated by an expanding gaseous fluid, which comprises a cylinder (18), piston (20) and inlet valve (29), the upper part of the piston (20) cooperating with a radially expansible resilient diaphragm (28), which is secured to the piston (20) and performs momentarily a pneumatic seal-engagement function along the periphery of said cylinder (18) during the gaseous expansion phase.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: December 12, 1989
    Inventors: Alessandro Caenazzo, Silvana Pasqualotto
  • Small-sized engine operated by fluid
    Patent number: 4766802
    Abstract: Small-sized engine operated by an expanding gaseous fluid, which comprises a cylinder (18), a piston (20) and an inlet valve (38), the upper parts of the cylinder (18) and the piston (20) cooperating momentarily with a perforated (29) resilient membrane (28) circumferentially secured to the cylinder (18) and performing the functions of a pneumatic seal temporarily.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: August 30, 1988
    Inventors: Alessandro Caenazzo, Silvana Pasqualotto