Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 26, 2007
Patent Application Number
11335897
Date Filed
January 19, 2006
Patent Primary Examiner
Patent abstract
An improved diagnostic system for a hydrostatic apparatus such as a hydrostatic transmission or transaxle is disclosed. A fastener having a port formed therein is used to connect a hydraulic component such as a center section to a housing. A diagnostic system may be located external to the housing and connected to the hydraulic circuit at least partially through the fastener port. A relief valve may also be located in the fastener and connected to the fastener port, or in a different fastener having a separate fastener port, to permit the fluid in the hydraulic circuit to be discharged to a sump.
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