Patents by Inventor Calvin W. Vriesen

Calvin W. Vriesen 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).

  • Self-contained propellant driven turbofan
    Patent number: 4671744
    Abstract: An integral turbofan/solid propellant gas generator air induction system features in a single device a solid propellant gas generator and a turbofan which are operative, when activated, even after long periods of storage, to take ambient air and compress it to the pressures required in emergency situations for preventing loss of life and valuable equipment, for example, the inflation of an aircraft slide.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: June 9, 1987
    Assignee: Morton Thiokol Inc.
    Inventors: Donald E. Shaffer, Stanley A. Racik, Peter H. Lucas, Calvin W. Vriesen
  • Gas generator method for producing cool effluent gases with reduced hydrogen cyanide content
    Patent number: 4407119
    Abstract: Incorporation of various flame coolants, particularly ferrous oxalate, cupric oxalate and submicron size Fe.sub.3 O.sub.4 in N,N'-dihydroxyethane diamide containing gas generants results in cooler flame temperature and reduced HCN content. Use of downstream coolants further reduces evolved gas temperature and also further reduces HCN content. Devices incorporating these propellants are useful inflators for many devices such as helicopter flotation bags, cargo pallet soft-landing bags, aircraft escape slides, inflatable life rafts and similar items. They are particularly suitable when these items must be man-rated.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: October 4, 1983
    Assignee: Thiokol Corporation
    Inventors: Richard A. Biddle, Calvin W. Vriesen, Ernest S. Sutton
  • Gas generator composition for producing cool effluent gases with reduced hydrogen cyanide content
    Patent number: 4298412
    Abstract: Incorporation of various flame coolants, particularly ferrous oxalate, cupric oxalate and submicron size Fe.sub.3 O.sub.4 in N,N'-dihydroxyethane diamide containing gas generants results in cooler flame temperature and reduced HCN content. Use of downstream coolants further reduces evolved gas temperature and also further reduces HCN content. Devices incorporating these propellants are useful inflators for many devices such as helicopter flotation bags, cargo pallet soft-landing bags, aircraft escape slides, inflatable life rafts and similar items. They are particularly suitable when these items must be man-rated.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: November 3, 1981
    Assignee: Thiokol Corporation
    Inventors: Richard A. Biddle, Calvin W. Vriesen, Ernest S. Sutton