Variable damping force damper

US9103398B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9103398-B2
Application numberUS-201214343204-A
CountryUS
Kind codeB2
Filing dateAug 31, 2012
Priority dateSep 10, 2011
Publication dateAug 11, 2015
Grant dateAug 11, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A solenoid-type variable damping force damper prevents excessive opening of a valve plate when the damper operates at a high speed, thereby achieving reduced electric power consumption. A valve body of an expansion-side valve plate is opened by pressure of hydraulic oil flowing in from an expansion-side first communication oil passage, but at this time, the oil pressures on the side of the upper surface and on the side of the under surface of the valve body are substantially equal to each other within the expansion-side pressure accumulation chamber, owing partly to a flow of the hydraulic oil passing through flow rate adjustment holes. Therefore, even when the damper undergoes an expanding action at a high speed and the hydraulic oil flows in from the expansion-side first communication oil passage at a high inflow rate, the valve body of the expansion-side valve plate is less likely to open excessively.

First claim

Opening claim text (preview).

The invention claimed is: 1. A variable damping force damper, comprising: a hollow cylinder having hydraulic oil sealed therein; a columnar piston configured to reciprocate in the cylinder and separate an interior of the cylinder into a first oil chamber and a second oil chamber; and a piston rod having the piston at an end thereof, wherein the piston comprises: an inner yoke made of a ferromagnetic material, the inner yoke being secured to the piston rod and having…

Assignees

Inventors

Classifications

  • Mechanical Engineering · mapped topic

  • Mechanical Engineering · mapped topic

  • B60G17/08Primary

    Operations & Transport · mapped topic

  • Mechanical Engineering · mapped topic

  • Mechanical Engineering · mapped topic

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Frequently asked questions

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What does patent US9103398B2 cover?
A solenoid-type variable damping force damper prevents excessive opening of a valve plate when the damper operates at a high speed, thereby achieving reduced electric power consumption. A valve body of an expansion-side valve plate is opened by pressure of hydraulic oil flowing in from an expansion-side first communication oil passage, but at this time, the oil pressures on the side of the uppe…
Who is the assignee on this patent?
Nakajima Kiyoshi, Honda Motor Co Ltd
What technology area does this patent fall under?
Primary CPC classification B60G17/08. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).