Patents by Inventor Clarence A. LeFebvre

Clarence A. LeFebvre 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).

  • Thrust management control propulsion system
    Patent number: 4047382
    Abstract: A control system for supplying uncured propellant into the combustion char of a missile. The system includes a moving injector cooperating with a pressurized putty-like uncured propellant. This combination provides the missile with a propulsion system having rapid wide range throttling, shut off and restart capabilities.
    Type: Grant
    Filed: October 3, 1975
    Date of Patent: September 13, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Clarence A. LeFebvre, Joseph M. Cabezut, Jr.
  • Reduction of depressurization thrust termination jolt
    Patent number: 3999379
    Abstract: Thrust termination of a solid propellant rocket motor is obtained by connecting the nozzle to the combustion chamber pressure vessel by means of explosive and extrusable bolts. When it is desired to obtain thrust termination, the explosive bolts are blown leaving the nozzle connected to the pressure vessel by the extrusable bolts. The extrusable bolts have sufficient strength to retain the nozzle assembly; however, upon elimination of the strength of the explosive bolts, the nozzle is permitted to separate from the pressure vessel and move to the rear by drawing the extrusable bolts through dies. The bolts deform to absorb the energy of the nozzle and the jolt of forward acceleration which would normally be obtained if the nozzle were ejected, is reduced or eliminated.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: December 28, 1976
    Assignee: United Technologies Corporation
    Inventor: Clarence A. LeFebvre