Fluid exchange devices and related controls, systems, and methods
US-2023258202-A1 · Aug 17, 2023 · US
Hydraulic feed-rate control apparatus
US8997625B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997625-B2 |
| Application number | US-201213534868-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 27, 2012 |
| Priority date | Aug 2, 2011 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A hydraulic feed-rate control apparatus pushes out a fluid by a main piston to a reservoir chamber via feed-rate adjustment mechanisms and flow passages and adjusts a feed rate of a reciprocating body; the adjustment mechanisms comprises first and second throttle valves arranged at front ends of a cylinder and adjusting flow rates of the fluid flowing into the flow passages; the main piston comprises an auxiliary piston integrally moving, and opening and closing the second throttle valve; and the auxiliary piston comprises an outer peripheral portion fitted in the second throttle valve and closed, a concave portion formed between a front portion and rear portion of the outer peripheral portion, a circulation hole formed in an inner peripheral portion of the auxiliary piston, rear-portion escape holes communicating the rear portion and the circulation hole, and concave-portion escape holes communicating the concave portion with the circulation hole.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydraulic feed-rate control apparatus comprising: a cylindrical body; a cylinder provided inside the body; a main piston reciprocally arranged in the cylinder; a main-piston rod coupled to the main piston and movably arranged in front and rear directions; a fluid pressure chamber provided at a front of the main piston and in which a fluid is reserved; a reservoir chamber provided at a rear of the main piston and in which the fluid is reserved;…
Assignees
Inventors
Classifications
- F15B11/046Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
- F15B11/04Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8997625B2 cover?
- A hydraulic feed-rate control apparatus pushes out a fluid by a main piston to a reservoir chamber via feed-rate adjustment mechanisms and flow passages and adjusts a feed rate of a reciprocating body; the adjustment mechanisms comprises first and second throttle valves arranged at front ends of a cylinder and adjusting flow rates of the fluid flowing into the flow passages; the main piston com…
- Who is the assignee on this patent?
- Murai Takahiro, Uchiuzo Hideki, Ihara Minoru, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F15B11/046. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 07 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).