Rotary Damper
AssigneeDelphi Technologies, Inc.
InventorsMichael Leslie Oliver, William Charles Kruckemeyer
Life of this patent
Estimating the term…
Abstract
A rotary damper for use in an automotive vehicle. The rotary damper includes an outer casing having a main chamber and a pair of piston orifices, the main chamber and the piston orifices being filled with a damping fluid, a pivotable cam located in the main chamber and attached to an arm for transferring the rotary movement of the arm to the cam. The damper also includes a pair of pistons, each located in its own orifice, and connected to opposite sides of the cam. When the arm transfers the rotary movement to the cam, each piston is moved in opposite directions in its respective piston orifice to damp the rotary movement of the arm.
Claims23
A damper for damping rotary movement comprising:
- an outer casing having a main chamber;
- a piston block received in said main chamber, said piston block having a pair of piston orifices in fluid communication with said main chamber, said main chamber and said piston orifices being filled with a damping fluid;
- a cam pivotably mounted in said main chamber, said cam being attachable to an arm for imparting said rotary movement to said cam;
- and
- a pair of pistons, each of said pistons being located in one of said piston orifices, said pistons being coupled to opposed sides of said cam such that when said arm transfers said rotary movement to said cam, each piston is moved in opposite directions in its respective piston orifice to damp said rotary movement of said arm.
A damper for damping rotary movement comprising:
- an outer casing having piston block received therein, said piston block having a pair of piston orifices filled with a damping fluid, said piston block being sized and located in said outer casing to define a return path located between said piston block and said outer casing;
- a cam pivotably mounted in said outer casing, said cam being attachable to an arm for transferring said rotary movement to said cam;
- and
- a pair of pistons connected to said cam, each piston being located in one of said pair of piston orifices, wherein pivoting movement of said cam relative to said casing moves said pistons in opposite directions in their respective one of said piston orifices to damp said pivoting movement of said cam.
Dependencies are inferred from the claim text.