Patent ID: 6189437
Filing Date: 2001-02-20
Classification: B60T

Abstract:
A brake booster having a front shell joined to a rear shell with the interior separated by a wall means to at least define a first front chamber and a first rear chamber, a reinforcement plate located adjacent an end face of said front shell has a plurality of studs for attaching a master cylinder to the front shell, first and second tubes extending through said wall means and each being having a first end sealed with respect to said front shell and a second end sealed with respect to said rear shell and fastener means extending through said first and second tubes for attaching said brake booster on an wall of a vehicle, said brake booster being characterized by first bushing means located between said front shell and reinforcing plate and second bushing means secured to said rear shell, said first bushing means including a first cylindrical body and a second cylindrical body each of which have a stepped bore defined by a first diameter separated from a second diameter by a first shoulder, said first end of said first and second tubes being correspondingly located in said second diameter of said first and second cylindrical members, said first diameter of said first and second cylindrical bodies each having first threads thereon, said fastener means including a first bolt and a second bolt each of which has a stem with a head on a first end and a second end, said stem of said first bolt and said second bolt each having second threads thereon adjacent said head and third threads thereon adjacent said second end, said third threads being smaller than said second threads such that said third threads on said stem passing through said first threads on said first and second cylindrical member while said second threads thereon engage said first threads to correspondingly join said first bolt with said first cylindrical member and said second bolt with said second cylindrical member to position said third threads outside of said rear shell to later engagement with corresponding nuts to attach said booster to said wall.