Patent ID: 8640599
Filing Date: 2014-02-04
Classification: B60T

Abstract:
1. A brake booster comprising: an atmosphere chamber having an air inlet; a working chamber in fluid communication with the atmosphere chamber; a valve assembly positioned between the atmosphere chamber and the working chamber, the valve assembly including a plunger configured to cooperate with a valve seat to selectively enable or prevent fluid flow from the atmosphere chamber to the working chamber, the valve seat defining a valve opening; a sleeve at least partially positioned in the atmosphere chamber, the sleeve defining a sleeve opening; an air passageway defined within the atmosphere chamber between the air inlet and the valve assembly, the air passageway extending through the sleeve opening and the valve opening; and a rod positioned in the air passageway and extending through the sleeve opening and the valve opening, wherein the movement of the rod causes movement of the plunger, and wherein the air passageway is void of any springs.