Brake booster
Patent 4689958 Issued on September 1, 1987. Estimated Expiration Date: 
August 19, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 19, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesBrake booster and master cylinder with mounting Vacuum brake booster Patent #: 4583366 InventorsAssigneeApplicationNo. 06/898177 filed on 08/19/1986US Classes:60/547.1, With control of or by a separate power fluid, etc.411/171Bolt or nut adapted to be fused directly to substructure (e.g., weld nut)ExaminersPrimary: Cohan, AlanAttorney, Agent or FirmInternational ClassesB60T 13/565 (20060101)B60T 13/52 (20060101) Foreign Application Priority Data1985-09-30 JPAbstractA brake booster, in particular, a construction for strengthening the coupling between the brake booster and a master cylinder, is disclosed. The head of a bolt which extends through an enclosed shell is welded to the internal surface of the shell so as to maintain a hermetic seal, and a strengthening plate disposed around the bolt head is welded to the internal surface of the shell. Additionally, a reinforcing member fixedly connected to the strengthening plate is welded to the bolt head to improve the rigidity of the strengthening plate. | |
