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US 7,410,154 B2Granted
Fluid damper
AssigneeHarn Marketing Sdn Bhd
InventorsHarn Lian Lam, Harn Yan Lam
Life of this patent
Estimating the term…
Abstract
The invention is a fluidic damper which comprises a closed cylinder (100) containing a valve mechanism. The valve mechanism is attached to a piston rod (110), a portion of which (the piston rod) emerges through an opening in one end wall of the cylinder (100). The valve mechanism (90) comprises a disc (10) with an axle (15), a rotatable annular cover piece (20) and an annular turning piece (40). A spring (30) is disposed between the cover piece (20) and the turning piece (40).
Claims18
A fluidic damper comprising:
- a closed cylinder filled with fluid, containing a valve mechanism attached to a piston rod, a portion of said piston rod emerges through an opening in an end wall of the cylinder, wherein
- a disc portion having multiple passages for fluid to flow from one side of said disc to the other side, and a shaft with at least one guide members disposed on the surface of said shaft at an angle;
- a rotatable annular cover piece which rotates about the said shaft, such that rotation of the cover piece in one direction closes said passages and in the other direction opens up said passages;
- an annular turning piece, which is structurally connected to the cover piece, having a retention mechanism for holding itself onto said guide member wherein the retention mechanism fits or engages slidingly to said guide member on the surface of the said shaft, so that the turning piece rotates when the retention mechanism slides along the guide member;
- a resilient means disposed between the said turning piece and said cover piece, to push the turning piece back to its original position and consequently rotates the cover piece to a position that opens up the passages of said disc.
2 more elements
Dependencies are inferred from the claim text.