Patents by Inventor Nicolaas van der Greft

Nicolaas van der Greft 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).

  • Patent number: 7818852
    Abstract: What is disclosed is a connecting system, comprising an elongated element and a substantially ring-shaped element provided with an opening, into which said elongated element can be inserted for connection thereto. The elongated element comprises a connecting member, and the ring-shaped element comprises an opening configured to allow sliding passage of the elongated element with the connecting member in a specific angular position. The elongated element with the connecting member present thereon can only move through the opening, causing the two elements to be disconnected, in a specific angular position. The elongated element need not undergo any complex operations during manufacture thereof, and furthermore no complex turning movements or squeezing operations are required upon moving the elements together or apart. The connecting system is used as a suspension system, for example, or as a connecting system for an earring.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: October 26, 2010
    Inventor: Nicolaas Van der Greft
  • Publication number: 20070163298
    Abstract: What is disclosed is a connecting system, comprising an elongated element and a substantially ring-shaped element provided with an opening, into which said elongated element can be inserted for connection thereto. The elongated element comprises a connecting member, and the ring-shaped element comprises an opening configured to allow sliding passage of the elongated element with the connecting member in a specific angular position. The elongated element with the connecting member present thereon can only move through the opening, causing the two elements to be disconnected, in a specific angular position. The elongated element need not undergo any complex operations during manufacture thereof, and furthermore no complex turning movements or squeezing operations are required upon moving the elements together or apart. The connecting system is used as a suspension system, for example, or as a connecting system for an earring.
    Type: Application
    Filed: January 28, 2005
    Publication date: July 19, 2007
    Inventor: Nicolaas Van der Greft
  • Patent number: 6477752
    Abstract: A lock (1) for a necklace, bracelet or such ornament, which lock is provided with a carbine hook (2) defining an eye-shaped space and with an end eye (3), which carbine hook (2) is provided with a hook portion (4) and a locking portion (5), which locking portion (5), in an open position of this locking portion, extends at least partly into the eye-shaped space (R) so that a passage (D) is formed in the carbine hook eye, through which passage the end eye (3) is movable to fix the end eye (3) to the carbine hook (2), to which end eye (3) a safety element is fixed, which locking portion, in an operative position of the end eye (3) relative to the carbine hook (2), cannot be brought into the open position, which safety element, in a swung position of the end eye (3) relative to the carbine hook (2), is moved out of the eye-shaped space (R) so that the locking portion can be brought into the open position.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: November 12, 2002
    Inventor: Nicolaas van der Greft