Patents by Inventor David A. Haluch

David A. Haluch 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).

  • Coupling device for tubular members
    Patent number: 4136897
    Abstract: A coupling device includes a nut releasably engaging a body which receives a tubular member. A sleeve which attaches to the nut telescopes over the tubular member and includes grooves for gripping the tubular member and an undercut recess for carrying a seal. An outer recess on the sleeve receives an inturned flange on the nut for attaching the nut and sleeve. A leading edge on the sleeve abuts the body and the inturned flange is movable from a first cylindrical section formed by the outer recess to a second cylindrical section via a tapered surface to radially contract the sleeve thereby engaging the grooves with the tubular member. The nut carries a major portion of the sleeve and the seal within an inner bore on the nut and the sleeve, seal and nut comprise a unitary assembly for telescoping over the tubular member.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: January 30, 1979
    Assignee: Parker-Hannifin Corporation
    Inventor: David A. Haluch