Rotary damper
AssigneeCharles N. VanValkenburgh
InventorsCharles Nicholas VanValkenburgh, John Harrison Burrow
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Abstract
A damping device utilizing a viscous fluid to stabilize rotational movement of a shaft. The damper includes a cylindrical body with multiple chambers containing a viscous fluid and a rotor with multiple vanes rotatably mounted within the body. The rotor has a hollow cylindrical center with passages that allow communication of fluid during rotational movement between the compressing and expanding chambers. A centrally located and axially adjustable valve acts to restrict the flow of fluid through the passages and thereby adjust the damping effect of the damper.
Claims4
a rotary damper which comprises:
- a. an inner body with a plurality of chambers, said chambers filled with a viscous fluid;
- b. a rotor rotatably mounted in said inner body, said rotor having a hollow center section and also having a number of vanes equal to the number of chambers in said inner body;
- said vanes dividing said chambers into compressing and expanding chambers;
- said rotor further having orifices that allow communication of said viscous fluid through the center of said rotor from said compressing chambers to said expanding chambers;
- c. an outer shell to cover said chambers to create a sealed unit;
- d. a regulator in the said hollow center section of said rotor,
- e. means for vertically adjusting said regulator.
a rotary damper which comprises:
- a. an inner body with a plurality of chambers, said chambers filled with a viscous fluid;
- b. a rotor rotatably mounted in said inner body, said rotor having a hollow center section and a number of vanes equal to the number of chambers in said inner body, said vanes dividing said chambers further into compressing and expanding chambers;
- said rotor further having orifices that allow communication of said viscous fluid through the center of said rotor from said compressing chambers to said expanding chambers;
- c. an outer shell to seal said chambers, said outer shell further having means for adding viscous fluid to said damper;
- d. a vertically adjustable regulator in the said hollow center section of said rotor,
- e. a threaded shaft rotatably mounted to said outer shell and coupled to said regulator;
- rotation of said threaded shaft causing vertical motion of said regulator and thereby adjusting the damping characteristics of said damper.
Dependencies are inferred from the claim text.