Swivel stack
US-10487970-B2 · Nov 26, 2019 · US
Rotary joint
US2016258564A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016258564-A1 |
| Application number | US-201415031261-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 15, 2014 |
| Priority date | Oct 28, 2013 |
| Publication date | Sep 8, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A mechanical seal which defines an annular space formed between a case body and a shaft body is included. The mechanical seal includes: a first sealing ring 11 having a first seal surface; a second sealing ring having a second seal surface which slidably contacts with the first seal surface; and a plurality of coil springs provided along the first sealing ring 11 in a circumferential direction and configured to apply axial forces to the first sealing ring 11 to press the first seal surface against the second seal surface. The plurality of coil springs are divided into a plurality of groups, and first regions K 1 in each of which occurring distortion is increased by the axial forces of the coil springs that belong to the group and second regions K 2 in each of which distortion is smaller than that in each first region K 1 are present alternately along the circumferential direction in the first sealing ring 11.
First claim
Opening claim text (preview).
1 . A rotary joint comprising: a tubular case body having a first flow passage formed therein so as to be opened at an inner peripheral side thereof; a shaft body provided within the case body so as to be rotatable relative to the case body and having a second flow passage formed therein so as to be opened at an outer peripheral side thereof; and a mechanical seal provided in an annular space formed between the case body and the shaft body, the mechanical seal defining the annular space to…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
- F16L39/06Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US2016258564A1 cover?
- A mechanical seal which defines an annular space formed between a case body and a shaft body is included. The mechanical seal includes: a first sealing ring 11 having a first seal surface; a second sealing ring having a second seal surface which slidably contacts with the first seal surface; and a plurality of coil springs provided along the first sealing ring 11 in a circumferential direct…
- Who is the assignee on this patent?
- Nippon Pillar Packing
- What technology area does this patent fall under?
- Primary CPC classification F16L39/06. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Sep 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).