Patents by Inventor Keith E. Zulauf

Keith E. Zulauf 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).

  • Publication number: 20190186664
    Abstract: A hose coupling assembly includes a male stem, a ferrule, and a retainer for coupling the ferrule to the male stem. The male stem may include an elongated body with a latch groove, and the ferrule may include a latch. The retainer may be disposed on the male stem and may be configured to couple the ferrule to the male stem such that the latch is aligned with the latch groove. A method of assembling a hose coupling assembly may include contacting an inner surface of a retainer with a shoulder of a male stem; deflecting, via the shoulder, a retention feature of the retainer; aligning a portion of the retention feature with a latch groove of the male stem; contacting a latch of a ferrule with an outer surface of the retention feature; deflecting, via the latch, the retention feature; and aligning the latch with the latch groove.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 20, 2019
    Inventors: Marvin Miller, Keith E. Zulauf, Stephen M. Pamas, Charles C. Gray, Wesley Gray Alvis
  • Patent number: 9803783
    Abstract: This disclosure relates generally to hose couplings useful for mining applications, more particularly to a fluid coupling capable of generally fully tightened by hand, including a visual lock for visual indication and safety when in a hand-tightened position. The coupling generally includes a male portion, a female portion, a retaining member and a locking member. The male portion passes through the retaining member, and the retaining member threadingly engages the female member. The locking member prevents unthreading of the retaining member from the female member.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: October 31, 2017
    Assignee: Gates Corporation
    Inventors: Keith E. Zulauf, Donald R. Gilbreath, Randall Mark Leasure, Richard A. Eaton
  • Patent number: D738470
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 8, 2015
    Assignee: Gates Corporation
    Inventors: Richard A. Eaton, Keith E. Zulauf, Donald R. Gilbreath
  • Patent number: D777299
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: January 24, 2017
    Assignee: Gates Corporation
    Inventors: Richard A. Eaton, Keith E. Zulauf, Donald R. Gilbreath
  • Patent number: D787647
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: May 23, 2017
    Assignee: Gates Corporation
    Inventors: Richard A. Eaton, Keith E. Zulauf, Donald R. Gilbreath