Patents by Inventor Sanna Massimo

Sanna Massimo 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).

  • System and device for supplying desired liquid volumes by means of a metering pump in variable flow rate condition
    Patent number: 4994984
    Abstract: For a metering vibrating pump in a variable flow rate condition, a system and a device is provided for supplying desired liquid quantities comprising a memory circuit (36) set by a supply or energization starting signal (38), a counter (24) counting a certain pump stroke number detected by a piston position detector (12) for detecting the position of a piston in the pump, a numerical comparator (28) comparing the numbers emitted by the counter (24) with preset numbers formed by a numerical digital combinator (32) for outputting a reset signal for the memory circuit (36); the memory circuit (36) starts the pump operation when it is set and stops the operation when it is reset.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: February 19, 1991
    Assignee: Tecnolab Snc di Sanna Massimo & C.
    Inventor: Sanna Massimo