The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 1985
Filed:
Nov. 18, 1982
Gerold Bieber, Langenargen, DE;
Zahnradfabrik Friedrichafen, Friedrichshafen, DE;
Abstract
In a mechanical gear selector for a synchronized gear change, there is disposed an automatic force amplifier--primarily a hydrostatically operating automatic amplifier--that amplifies or amplifies the force introduced depending on the magnitude thereof, no separate energy such as a fluid pump being needed therefor, and the amplification also taking place only when needed, primarily for the synchronization of gears. Between a force input shaft and a casing disposed concentrically thereto, which casing also transmits the amplified force, there is situated in connection with an annular and a pressure space the force amplifier proper and a spring element for the defined amplification threshold. On the design depends from what input force amplification starts. From a defined amplified pressure, the amplifying action is terminated by a pressure-reducing valve so that the transmission of force is continued practically with this pressure that has been reached or a pressure therebelow.