Tensioning device for an endless drive means having a combination valve
AssigneeSchaeffler Technologies AG & Co. KG
InventorChristian HARTMANN
Life of this patent
Estimating the term…
Abstract
A tensioning device for an endless drive which has a housing, in which there is an extendable cylinder. Between the housing and the cylinder there is a pressure chamber that can be filled with a pressure fluid via a supply opening in the housing. A combination valve, which has a nonreturn valve that can be opened in the direction of the pressure chamber, a movable first shutoff element, a pressure relief valve, which can be opened counter to the aforementioned direction and a movable second shutoff element inserted in the supply opening. The first shutoff element of the nonreturn valve is arranged substantially on the pressure-chamber side of the second shutoff element.
Claims11
1-10. (canceled)
A tensioning device for an endless drive means, comprising:
- a housing having a supply opening;
- an extendable cylinder arranged inside of the housing;
- a pressure chamber arranged between the housing and the cylinder that is fillable with a pressure fluid via the supply opening in the housing;
- a combination valve inserted in the supply opening and having a nonreturn valve, which is openable in a direction of the pressure chamber and has a movable first shutoff element, and a pressure relief valve, which can be opened counter to the direction of the pressure chamber and has a movable second shutoff element, the first shutoff element of the nonreturn valve being arranged substantially on a pressure chamber side of the second shutoff element.
Dependencies are inferred from the claim text.