Granted Patent B2

US 8,137,237 · App. 12/069,491 · Granted Mar 20, 2012

Abstract

Claims (14)

1. A device ( 1 ) for actuating a plurality of hydraulic control cylinders ( 15 , 17 , 19 , 21 , 23 , 25 , 27 , 29 ), comprising:

a pressure regulating valve ( 41 ) with a first and a second pressure regulating output ( 45 , 47 );

a first selector valve ( 51 ) connected downline from the pressure regulating outputs ( 45 , 47 );

a second selector valve ( 53 ) connected downline from the first selector valve ( 51 ), with a plurality of individual pressure outputs ( 33 , 35 , 37 , 39 ); wherein the second pressure regulating output ( 47 ) is optionally assignable through the first and second selector valves ( 51 , 53 ) to one of the individual pressure outputs ( 33 , 35 , 37 , 39 ), and the individual pressure outputs ( 33 , 35 , 37 , 39 ) that are not assigned to the second pressure regulating output ( 47 ) are assignable to the first pressure regulating output ( 45 ).

2. The device recited in claim 1 , wherein a shared connection ( 31 ) is assigned between at least a portion of the plurality of hydraulic control cylinders and the first pressure regulating output ( 45 ).

3. The device recited in claim 2 , wherein four of the control cylinders ( 17 , 21 , 25 , 29 ) are assigned to the shared connection ( 31 ) and four others of the control cylinders ( 15 , 19 , 23 , 27 ) are assigned to the individual pressure outputs ( 33 , 35 , 37 , 39 ).

4. The device recited in claim 2 , wherein the first selector valve ( 51 ) has a first switching input ( 55 ) and a first and a second switching output ( 61 , 63 ), where the first switching input ( 55 ) is connected downline from the second pressure regulating output ( 47 ) and is optionally assignable to one of the switching outputs ( 61 , 63 ), while the other switching output ( 61 , 63 ) is assignable to the shared connection ( 31 ).

5. The device recited in claim 4 , wherein the second selector valve ( 53 ) has a second switching input ( 57 ) that is connected downline from the first switching output ( 61 ) and a third switching input ( 59 ) that is connected downline from the second switching output ( 63 ).

6. The device recited in claim 5 , wherein the second switching input ( 57 ) of the second selector valve ( 53 ) is optionally assignable to a first or second individual pressure output ( 33 , 35 ) and the third switching input ( 59 ) of the second selector valve ( 53 ) is optionally assignable to a third or fourth individual pressure output ( 37 , 39 ) of the second selector valve ( 53 ), the particular unassigned individual pressure output ( 33 , 35 , 37 , 39 ) being assignable to the shared connection ( 31 ).

7. A hydraulic shift transmission comprising a device ( 1 ) for actuating a plurality of hydraulic control cylinders ( 15 , 17 , 19 , 21 , 23 , 25 , 27 , 29 ), including:

a pressure regulating valve ( 41 ) with a first and a second pressure regulating output ( 45 , 47 );

a first selector valve ( 51 ) connected downline from the pressure regulating outputs ( 45 , 47 );

a second selector valve ( 53 ) connected downline from the first selector valve ( 51 ), with a plurality of individual pressure outputs ( 33 , 35 , 37 , 39 ); wherein the second pressure regulating output ( 47 ) is optionally assignable through the first and second selector valves ( 51 , 53 ) to one of the individual pressure outputs ( 33 , 35 , 37 , 39 ), and the individual pressure outputs ( 33 , 35 , 37 , 39 ) that are not assigned to the second pressure regulating output ( 47 ) are assignable to the first pressure regulating output ( 45 ).

8. The hydraulic shift transmission recited in claim 7 wherein said hydraulic shift transmission comprises a double-clutch transmission ( 5 ).

Assignments (9)