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US-2015345639-A1 · Dec 3, 2015 · US
Hydraulic shock absorber
US8991571B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8991571-B2 |
| Application number | US-201113243175-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 23, 2011 |
| Priority date | Mar 30, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
Official abstract text for this publication.
In a hydraulic shock absorber, a damping force generating device provided between a piston side oil chamber of a cylinder and a rod side oil chamber is provided with a through-hole which communicates the piston side oil chamber of the cylinder with the rod side oil chamber of the cylinder via an outer flow path of the cylinder. A leading end portion of a piston rod is provided with a needle which can come in and out of the through-hole of the damping force generating device, and an opening degree of the through-hole can be varied by the needle according to a forward and backward position of the piston rod with respect to the oil chamber of the cylinder.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydraulic shock absorber comprising: a cylinder attached to one of a vehicle body side and an axle side; a piston rod attached to the other of the vehicle body side and the axe side and inserted into an oil chamber of the cylinder; a piston which is provided in a leading end portion of the piston rod and divides the oil chamber of the cylinder into a piston side oil chamber and a rod side oil chamber; and an oil reservoir chamber compensating a volum…
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- What does patent US8991571B2 cover?
- In a hydraulic shock absorber, a damping force generating device provided between a piston side oil chamber of a cylinder and a rod side oil chamber is provided with a through-hole which communicates the piston side oil chamber of the cylinder with the rod side oil chamber of the cylinder via an outer flow path of the cylinder. A leading end portion of a piston rod is provided with a needle whi…
- Who is the assignee on this patent?
- Murakami Yosuke, Showa Corp
- What technology area does this patent fall under?
- Primary CPC classification F16F9/32. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 31 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).