Patents by Inventor Walter Ploeger, Jr.

Walter Ploeger, Jr. 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).

  • Printing ribbon spool
    Patent number: 4701062
    Abstract: A printing ribbon spool is disclosed for maintaining the print-out density or consistency of a printing ribbon. The spool contains a sealed reservoir of ink. Within the reservoir there is provided a sealed container of ink which communicates with the reservoir when it is desired to use the spool.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: October 20, 1987
    Inventor: Walter Ploeger, Jr.
  • Method of growing grapevines
    Patent number: 4457102
    Abstract: Open ended tubes which are impervious to water and having a length of at least two feet are placed in holes in the ground. The tubes are filled with a sterile growing medium. The vines are planted in said growing medium. The exposed portion of the medium is covered by a filter material porous to water but impervious to pests. The tubes force the roots to grow downwardly and then out the bottom end of the tubes and then horizontally into the native soil.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: July 3, 1984
    Inventor: Walter Ploeger, Jr.
  • Printing ribbon spool
    Patent number: 4115012
    Abstract: A printing ribbon spool is disclosed for maintaining the print-out density or consistency of a printing ribbon by contact between a woven or knitted pad on the spool and a side edge of the ribbon. Ink is communicated to the pad from a sealed reservoir by way of a woven or knitted fabric which communicates with the reservoir through a hole substantially smaller in diameter than the transverse width of the wick in its normal condition.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: September 19, 1978
    Inventors: Walter Ploeger, Jr., Jeanne M. Ploeger
  • Printing ribbon
    Patent number: 4113392
    Abstract: A printing ribbon is composed of a printing portion and a correction portion welded together and extending parallel to each other. The correction portion lies in the plane of the printing portion which is the thickest portion of the ribbon and constitutes only a single thickness of inked fabric.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: September 12, 1978
    Assignee: Filmon Process Corp.
    Inventor: Walter Ploeger, Jr.