Patent ID: 11959327
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F  A | IPC E  F

Claim 0:
1. A fluid damper for parts movable relative to one another, in particular furniture parts, having
a piston (4) guided adjustably in a cylinder (1) along a longitudinal axis,
at least one through opening (4.1, 4.2) for fluid flowing through, which is embodied in the piston (4) and/or between the piston (4) and the cylinder (1),
a sleeve (2) having wings (2.1, 2.2; 2.1′, 2.2′), which is located radially rotatably relative to the piston (4) counter to a fluid flowing through about the longitudinal axis or about an axis extending parallel to the longitudinal axis, and can be put into operative connection with the through openings (4.1, 4.2),
a hollow-cylindrical part of the piston (4), which along at least a portion of the longitudinal axis radially surrounds the sleeve (2) and the at least one wing (2.1, 2.2; 2.1′, 2.2′), located on its circumference;, Wherein, the piston (4) is connected to a piston rod (5) extending out of the cylinder (1), which piston rod is put into contact with an adjustable furniture part; and, Wherein, the sleeve having wings and the fluid damper allow dynamic adjustment of damping characteristics, so that at low speeds of the piston rod, only a minimal braking effect is obtained, while at high velocity and pressure of the piston rod on the piston, the wings narrow the at least one through opening, resulting in a smaller fluid flow through the piston, generating a counterforce, then as speed decreases at the end of a closing action, a spring (3) rotates the wings clockwise, opening the at least one through opening, resulting in a smooth furniture closing action.