Patents by Inventor Hans Grzeskowiak

Hans Grzeskowiak 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: 5930867
    Abstract: According to the invention there is provided a door fitting comprising a travelling door fitting member; a stationary door fitting member; a bolt extending between said travelling door fitting member and said stationary door fitting member and defining a swivelling axis around which said travelling door fitting member can swing around said stationary door fitting member; wherein said bolt has a first portion incorporated with a first door fitting member and a second portion incorporated with a second door fitting member, said first portion comprising a threaded portion for being threadedly engaged with said first door fitting member; wherein said threaded portion has a thread pitch of between 24 and 50 mm, preferably of between 36 and 46 mm, across an angle of 360.degree.; and wherein said threaded portion comprises 5 to 7 threads.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: August 3, 1999
    Assignee: Hans Grzeskowiak
    Inventor: Hans Grzeskowiak