Patents Assigned to FreEnt Technologies, Inc
  • Methods and designs for increasing efficiency in engines
    Patent number: 9574502
    Abstract: An efficient thermal engine is disclosed. In some embodiments, a remainder of energy remaining after an expansion cycle is used to power a subsequent compression cycle. In other embodiments, novel configurations for a larger expansion volume than compression volume are provided. In addition, work of compression may be reduced in a compression cycle, and recovered in an expansion cycle.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: February 21, 2017
    Assignee: FreEnt Technologies, Inc
    Inventor: Herbert U. Fluhler