EP0346040A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Adjustable damper means for shock absorber
Assignee: Individual
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Filing: 1989-06-05
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Granted: —
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Expires: 2009-06-05
Abstract
Abstract A piston and cylinder arrangement (1), which includes a piston and piston rod assembly (3) and which is filled with a damper-fluid, is attached to an auxiliary tank (15) by a flow channel. A first restriction in the piston and piston rod assembly substantially controls the low velocity flow of the damper fluid during extension strokes and a second restriction in the piston and piston rod assembly substantially controls high velocity flow of the damper fluid during the extension strokes. A third restriction (23) in the flow channel substantially controls the low velocity flow of the damper-fluid during compression strokes, and a fourth restriction (25) in the flow channel substantially controls the high velocity flow of the damper-fluid during the compression strokes. Substantially unrestricted flow of the damper-fluid through the piston and piston rod assembly is permitted during the compression strokes, and substantially unrestricted flow of the damper-fluid through the flow channel is permitted during extension strokes.
Inventors
- 👤 Brian Warner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 11:01
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/44; F16F9/50; F16F9/516; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
220 words
Adjustable damper means for a shock absorber, comprising: a piston and cylinder arrangement comprising a cylinder, and a piston and piston rod assembly slidably mounted in said cylinder and dividing said cylinder into a first chamber and a second chamber, said cylinder being filled with a damper-fluid; an auxiliary tank; a flow channel permitting flow of said damper-fluid between said cylinder and said auxiliary tank; wherein, during a compression strokes of said piston and piston rod assembly, the volume of said first chamber is decreased and the volume of said second chamber is increased; and during an extension strokes of said piston and piston cylinder arrangement, the volume of said first chamber is increased and the volume of said second chamber is decreased; and including: a first restriction means associated with said piston and piston rod assembly and substantially controlling the low velocity flow of said damper-fluid during said extenstion strokes, and a second restriction means associatd with said piston and piston rod assembly substantially controlling high velocity flow of said damper-fluid during said extension strokes; and a third restriction means in said flow channel substantially controlling the low velocity flow of said damper-fluid during said compression strokes and a fourth restriction means in said flow channel substantially controlling the high velocity flow of said damper-fluid during said compression strokes.
Claim 2
Dependent Claim
220 words
Adjustable damper means for a shock absorber, comprising: a piston and cylinder arrangement comprising a cylinder, and a piston and piston rod assembly slidably mounted in said cylinder and dividing said cylinder into a first chamber and a second chamber, said cylinder being filled with a damper-fluid; an auxiliary tank; a flow channel permitting flow of said damper-fluid between said cylinder and said auxiliary tank; wherein, during a compression strokes of said piston and piston rod assembly, the volume of said first chamber is decreased and the volume of said second chamber is increased; and during an extension strokes of said piston and piston cylinder arrangement, the volume of said first chamber is increased and the volume of said second chamber is decreased; and including: a first restriction means associated with said piston and piston rod assembly and substantially controlling the low velocity flow of said damper-fluid during said extenstion strokes, and a second restriction means associatd with said piston and piston rod assembly substantially controlling high velocity flow of said damper-fluid during said extension strokes; and a third restriction means in said flow channel substantially controlling the low velocity flow of said damper-fluid during said compression strokes and a fourth restriction means in said flow channel substantially controlling the high velocity flow of said damper-fluid during said compression strokes.
Claim 3
Dependent Claim
50 words
A damper means as defined in claim 1 and further including first means permitting subtantially unrestricted flow of said damper-fluid through said piston and piston rod assembly during said compression strokes, and a second means permitting substantially unrestricted flow of said damper-fluid through said flow channel during said extension strokes.
Claim 4
Dependent Claim
106 words
A damper means as defined in claim 1 wherein said piston and piston rod assembly comprise a truncated cylindrical piston head having a top surface and a bottom surface, a central opening extending through said piston head, said piston rod comprising a hollow piston rod, an inner cylinder movably mounted in said hollow piston rod, said inner cylinder being concentric with said piston head, an opening in the side wall of said hollow piston rod; wherein, said first restriction means comprises said opening in said side wall, said first restriction being variable by the inner cylinder adjusting the size of said opening in said side wall.
Claim 5
Dependent Claim
18 words
A damper means as defined in claim 1 wherein the second restriction means comprises a blow off valve.
Claim 6
Dependent Claim
107 words
A damper means as defined in claim 4 wherein said second restriction means comprises two openings extending through said piston head from the top surface to the bottom surface thereof; a rectangular plate, comprising two protrusions, each protrusion being mounted to be aligned with and to extend into a respective opening; said plate being mounted over the top surface of said piston head; an adjustment rod extending through said central opening and including a cap at the top end thereof; a spring between said cap and said plate, the tension of said spring being adjustable by said adjustment rod whereby said second restriction means is also variable.
Claim 7
Dependent Claim
73 words
A damper means as defined in claim 1 wherein said means permitting substantially unrestricted flow of said damper-fluid through said piston and piston rod assembly during said compression strokes comprises a series of holes or slots opening around said piston head and extending through said piston head from the bottom surface to the top surface thereof; and a flapper rod disposed adjacent said circular opening on the bottom surface of said piston head.
Claim 8
Dependent Claim
66 words
A damper means as defined in claim 1 wherein said third restriction means and said fourth restriction means and said second means permitting substantially unrestricted flow of said damper-fluid through said flow channel during said extension strokes comprises an enclosure disposed in said flow channel; a first opening in said enclosure connected to said cylinder; a second opening in said enclosure connected to said auxiliary tank.
Claim 9
Dependent Claim
51 words
A damper means as defined in claim 7 wherein said third restriction means comprises: a first orifice between said first opening and said second opening; a first means for adjusting said first orifice; a first reed disposed over said first orifice; first means for adjusting the stiffness of said first reed.
Claim 10
Dependent Claim
51 words
A damper means as defined in claim 8 wherein said fourth restriction means comprises: a second orifice between said first opening and said second opening; a second means for adjusting said second orifice; a second reed disposed over said second orifice; second means for adjusting the stiffness of said second reed.
Claim 11
Dependent Claim
25 words
A damper means as defined in claim 9 wherein said first reed means is relatively flexible and wherein said second reed means is relatively rigid.
Claim 12
Dependent Claim
61 words
A damper means as defined in claim 10 wherein said second means permitting substantially unrestricted flow of said damper-fluid through said flow channel during said extension strokes comprises a one way valve between said first opening and said second opening and mounted such that said valve is fully open during said extension strokes and is fully closed during said compression strokes.
References Cited (Backward Citations)
No citation records indexed.
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