Hydraulic damper for furniture doors and drawers

A hydraulic damper (1000) for use in furniture doors or drawers, comprising

• a housing (1) that has a closed first end (11) and a second end (12) that is distal to the first end (11) and that is arranged for allowing linear reciprocations of a rod (2) inside the housing (1) along an axis (A) between the first end (11) and second end (12);
• and
• a piston (3) connected to the rod (2), the piston (3) is arranged for defining a first chamber (13) and a second chamber (14) inside the housing (1) along the axis (A), respectively at a first end (11) side and a second end (12) side of the piston (3), such that respective volumes of the first chamber (13) and second chamber (14) are variable in accordance with axial positioning of the piston (3) in the housing (1) at reciprocations of the rod (2);
• wherein
• the piston (3) comprises one or more openings (31) around the axis (A) that provide fluid flow communication between the first chamber (13) and second chamber (14);
• at a first chamber (13) side of the openings (31), the piston (3) is provided with a ring (4) around the axis (A), that is arranged to allow fluid flow communication around the axis (A) between the first chamber (13) and the second chamber (14) with a radial first flow cross-section, when a hydraulic fluid pressure in the first chamber (13) is equal to or greater than the hydraulic fluid pressure in the second chamber (2) and with a radial second flow cross-section that is greater than said first flow section, when a hydraulic fluid pressure in the first chamber (13) is smaller than the hydraulic fluid pressure in the second chamber (14) to axially move the ring (4) away from the openings (31);
• wherein the ring (4) is arranged to axially flex away from the openings (31), such that said second flow cross-section is availed by axial flexion of the ring (4) when the hydraulic fluid pressure in the first chamber (13) is smaller than the hydraulic fluid pressure in the second chamber (14).