Patents by Inventor Christoffel Anthonius Johannes Vroonland

Christoffel Anthonius Johannes Vroonland 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).

  • Assembly for providing a passage for liquid between a first member and a second member
    Patent number: 5671770
    Abstract: An assembly, for providing a passage for liquid between a first member comprising a liquid reservoir such as a concentrate container or storage vessel and a second member such as a liquid outlet, includes a first connector which is adapted to be mounted on the second member and comprises a piercing assembly by which an opening can be provided in the first member, and a second connector which is undetachably connected to the first member. While in use, the first and second connectors are connected to each other, and the first connector is moved relative to the second connector in such a manner that the piercing assembly forces an opening in the first member, whereby the passage is effected.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: September 30, 1997
    Assignee: Sara Lee/De N.V.
    Inventors: Emil Herman Rusche, Jan Cornelis Van Hattem, Christoffel Anthonius Johannes Vroonland