Patents by Inventor John C. Zippwald, Sr.

John C. Zippwald, Sr. 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: 4504995
    Abstract: A playing card cleaning apparatus, wherein individual cards are separated from a deck thereof and fed under compression between a first pair of traction rollers and scrubbing rollers wetted with a thin film of cleaning solution and withdrawn under tension between a second pair of traction rollers and said scrubbing rollers, the scrubbing rollers squeezing the thin film of cleaning solution rearwardly therefrom and leaving the cards damp, and wherein drying means of absorbent belting wipes moisture from the cards and discharges them into a receiver, employing a liquid cleaning solution of soda water and nonionic-cationic cleaning agents applied to wet the cards that are simultaneously scrubbed and from which said solution is squeezed.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: March 19, 1985
    Inventor: John C. Zippwald, Sr.