Patents by Inventor Walfred J. Liimatta

Walfred J. Liimatta 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: 6086118
    Abstract: A quick connector for forming a joint in a fluid line consists of a female connector body having a bore which receives a male member. A sleeve surrounds and is secured on the male member in close fitting relation with the male member and with the female connector body. A retainer extends between the sleeve and a radial face formed in the connector body to secure the male member in the connector body. A secondary retainer provides enhanced retention capability. An optional plug may be positioned in the bore entrance to prevent introduction of external contaminants.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: July 11, 2000
    Assignee: Bundy Corporation
    Inventors: James Mc Naughton, Walfred J. Liimatta, Mark G. Ketcham
  • Patent number: 5593188
    Abstract: A quick connector for forming a joint in a fluid line consists of a female connector body having a bore which receives a male member. A sleeve surrounds and is secured on the male member in close fitting relation with the male member and with the female connector body. A retainer extends between the sleeve and a radial face formed in the connector body to secure the male member in the connector body. A secondary retainer provides enhanced retention capability. An optional plug may be positioned in the bore entrance to prevent introduction of external contaminants.
    Type: Grant
    Filed: January 3, 1996
    Date of Patent: January 14, 1997
    Assignee: Bundy Corporation
    Inventors: James McNaughton, Walfred J. Liimatta, Mark G. Ketcham
  • Patent number: 5538297
    Abstract: A quick connector for forming a joint in a fluid line consists of a female connector body having a bore which receives a male member. A sleeve surrounds and is secured on the male member in close fitting relation with the male member and with the female connector body. A retainer extends between the sleeve and a radial face formed in the connector body to secure the male member in the connector body. A secondary retainer provides enhanced retention capability. An optional plug may be positioned in the bore entrance to prevent introduction of external contaminants.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: July 23, 1996
    Assignee: Bundy Corporation
    Inventors: James Mc Naughton, Walfred J. Liimatta, Mark G. Ketcham
  • Patent number: 5350203
    Abstract: A unique fluid connector is disclosed that quickly connects a tube within a housing bore, while providing a strong, fluid tight seal. The tube has axially spaced radially greater diameter upset portions with a sleeve and a locking member trapped between the upset portions. The locking member includes resilient arms which secure the locking member within the housing bore. The sleeve has a notch at an inner axial end which abuts the inner upset portion to retain the tube within the bore. An O-ring is positioned axially inwardly of the upset portion. The sleeve and the inner upset portion both abut the O-ring to provide a fluid tight seal between the tube and the housing. In a unique method, a tube unit is assembled by forming the outer upset portion on the tube. The locking member and sleeve are then moved onto the tube. The inner upset portion is then formed on the tube to secure the locking member and the sleeve on the tube.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: September 27, 1994
    Assignee: Bundy Corporation
    Inventors: James McNaughton, Walfred J. Liimatta, Mark G. Ketcham
  • Patent number: 5275448
    Abstract: A unique fluid connector is disclosed that quickly connects a tube within a housing bore, while providing a strong, fluid tight seal. The tube has axially spaced radially greater diameter upset portions with a sleeve and a locking member trapped between the upset portions. The locking member includes resilient arms which secure it within the housing bore. The sleeve has a notch at an inner axial end which abuts the inner upset portion to retain the tube within the bore. An O-ring is positioned axially inwardly of the upset portion. The sleeve and the inner upset portion both abut the O-ring to provide a fluid tight seal between the tube and the housing. In a unique method, a tube unit is assembled by forming the outer upset portion on the tube. The locking member and sleeve are then moved onto the tube. The inner upset portion is then formed on the tube to secure the locking member and the sleeve on the tube. An O-ring retaining portion is then formed on the tube, and the O-ring is positioned onto the tube.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: January 4, 1994
    Assignee: Huron Products Industries, Inc.
    Inventors: James McNaughton, Mark G. Ketcham, Walfred J. Liimatta