Patents by Inventor Walther Filter

Walther Filter 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).

  • Shaft-connecting chain coupling
    Patent number: 3952544
    Abstract: A chain is trained around two substantially coaxial sprockets. A chain fastener comprises two fastener members connected to respective ends of the chain and a locking pin adapted to assume a first position, in which the locking pin locks the two fastener members together, and a second position, in which the locking pin permits the two fastener members to be separated from each other. The locking pin is movable between the first and second positions in a plane which is normal to the axis of the sprockets.
    Type: Grant
    Filed: June 27, 1974
    Date of Patent: April 27, 1976
    Assignees: Vereinigte Osterreichische Eisen-und Stahlwerke - Alpine Montan Aktiengesellschaft, Etablissement Wanderfield & Co.
    Inventor: Walther Filter