Patents by Inventor Donald F. Dengel

Donald F. Dengel 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: 5799774
    Abstract: A wallet key holder has a main pocket for holding cards and a plurality of key holding and card holding pockets foldably connected to opposite end portions and to a side portion of the main pocket and communicating with the main pocket. An elongated slit is provided in the main pocket to provide an opening for insertion of not only cards into the main pocket, but also keys into the key holding pockets.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: September 1, 1998
    Inventor: Donald F. Dengel
  • Patent number: 4901549
    Abstract: A key retainer, primarily having the facility for manually manipulating a key from a stored, inoperative position to a partially stored operation position, is disclosed. The key retainer includes a top planar semi-flexible member and bottom planar semi-flexible member, both of which are joined to one another generally, along their perimeters and vertical center lines, to form two adjacent key storing facilities. Each key storing facility is provided with a key receiving-finger manipulating slot for inserting a key within the key storing facility and manual manipulation of the key to move the key from a stored position to a partially stored operative position through an opening provided in the joining means. A major advantage of the key retaining arrangement is the absence of key connecting devices usually associated with key retainers.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: February 20, 1990
    Inventor: Donald F. Dengel
  • Patent number: 4785645
    Abstract: A key retainer, primarily having the facility for manually manipulating a key from a stored, inoperative position to a partially stored operation position, is disclosed. The key retainer includes a top planar semi-flexible member and bottom planar semi-flexible member, both of which are joined to one another generally, along their perimeters and vertical center lines, to form two adjacent key storing facilities. Each key storing facility is provided with a key receiving slot for inserting a key within the key storing facility, and a finger-manipulating aperture for manually transferring the key from a stored position to a partially stored operative position through an opening provided in the joining means. A major advantage of the key retaining arrangement, is the absence of key connecting devices usually associated with key retainers.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: November 22, 1988
    Inventor: Donald F. Dengel