Patents by Inventor Pietro DiDonato

Pietro DiDonato 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).

  • No-tangle two dog retractable leash with rotatable handle
    Patent number: 7455034
    Abstract: Disclosed is a two-pet no-tangle retractable leash device including an axle having a rod opening and a first spool including a first leash and a second spool including a second leash rotatably mounted on the axle. Each leash has a proximal end attached to the spool and a distal end extending through one of two leash openings. Additionally, each spool has a spool brake element and a return spring, where a proximal end of the return spring is connected to the spool and a distal end of the return spring is connected to the axle. When a force is applied to pull on the leashes, the spools rotate thereby unwinding the return springs. When the force is removed, the return springs rewind forcing the spool to rewind the leash to its original position.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 25, 2008
    Inventor: Pietro DiDonato
  • NO-TANGLE TWO DOG RETRACTABLE LEASH
    Publication number: 20080000433
    Abstract: Disclosed is a two-pet no-tangle retractable leash device including an axle having a rod opening and a first spool including a first leash and a second spool including a second leash rotatably mounted on the axle. Each leash has a proximal end attached to the spool and a distal end extending through one of two leash openings. Additionally, each spool has a spool brake element and a return spring, where a proximal end of the return spring is connected to the spool and a distal end of the return spring is connected to the axle. When a force is applied to pull on the leashes, the spools rotate thereby unwinding the return springs. When the force is removed, the return springs rewind forcing the spool to rewind the leash to its original position.
    Type: Application
    Filed: September 14, 2007
    Publication date: January 3, 2008
    Inventor: Pietro DiDonato
  • No-tangle two dog retractable leash with flashlight
    Patent number: 7207296
    Abstract: A two-pet no-tangle retractable leash device including an axle having a rod opening perpendicular to its axis and a first spool including a first leash and a second spool including a second leash rotatably mounted on the axle. Each leash having a proximal end attached to the spool and a distal end extending through one of two leash openings. Additionally, each spool has a spool brake and a return spring, where a proximal end of the return spring is connected to the spool and a distal end of the return spring is connected to the axle. When a force is applied to pull on the leashes, the spools rotate thereby unwinding the return springs. When the force is removed, the return springs rewind forcing the spool to rewind the leash to its original position.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: April 24, 2007
    Inventor: Pietro DiDonato
  • No-tangle two dog retractable leash with flashlight
    Publication number: 20060201449
    Abstract: Disclosed is a two-pet no-tangle retractable leash device including an axle having a rod opening perpendicular to its axis and a first spool including a first leash and a second spool including a second leash rotatably mounted on the axle. Each leash having a proximal end attached to the spool and a distal end extending through one of two leash openings. Additionally, each spool has a spool brake and a return spring, where a proximal end of the return spring is connected to the spool and a distal end of the return spring is connected to the axle. When a force is applied to pull on the leashes, the spools rotate thereby unwinding the return springs. When the force is removed, the return springs rewind forcing the spool to rewind the leash to its original position.
    Type: Application
    Filed: March 14, 2006
    Publication date: September 14, 2006
    Inventor: Pietro DiDonato