Jake Brake, or Jacobs Brake, escribes a particular brand of engine brake manufactured and sold by Jacobs Vehicle Systems, Inc. While the term Jake Brake technically only describes Jake Brake brand engine brakes, it has become a genericized trademark and is often used to refer to engine brakes or compression release engine brakes in general, especially on large vehicles or heavy equipment. "Jake Brake" is a registered trademark of Jacobs Vehicle Systems, Inc.