Check valve with accelerated closure
US-9752692-B2 · Sep 5, 2017 · US
Valve flapper spring stop mechanism
US2016010757A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016010757-A1 |
| Application number | US-201414326080-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 8, 2014 |
| Priority date | Jul 8, 2014 |
| Publication date | Jan 14, 2016 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A check valve with a housing and a first flapper rotatable about an axis between open and closed positions includes a first spring mechanism operatively positioned between a static component and the first flapper. When the first flapper is in the closed position there is a distance between the first spring mechanism and either the static component or the first flapper.
First claim
Opening claim text (preview).
1 . A check valve comprising: a housing; a first flapper rotatable about an axis between open and closed positions; and a first spring mechanism operatively positioned between a static component and the first flapper, wherein when the first flapper is in the closed position there is a distance between the first spring mechanism and either the static component or the first flapper. 2 . The check valve of claim 1 , further comprising: a first post and a second post included on the housing, wherein the axis about which the first flapper is rotatable extends between the first post and the second post. 3 . The check valve of claim 2 , further comprising: an over-center stop on at least one of the first post and second post. 4 . The check valve of claim 3 , wherein the over-center stop is angled to correspond to the first flapper at or near a maximum open position. 5 . The check valve of claim 1 , wherein the first spring mechanism comprises multiple springs in parallel. 6 . The check valve of claim 1 , wherein the first spring mechanism is made of a metallic material. 7 . The check valve of claim 1 , further comprising: a second flapper rotatable about an axis between open and closed positions; and a second spring mechanism operatively positioned between a static component and the second flapper, wherein when the second flapper is in the closed position there is a distance between the second spring mechanism and either the static component or the second flapper. 8 . The check valve of claim 7 , further comprising: a first post and a second post included on the housing; and an over-center stop on at least one of the first post and second post. 9 . The check valve of claim 8 , wherein the over-center stop is angled to correspond to the second flapper at or near a maximum open position. 10 . The check valve of claim 7 , wherein the second spring mechanism comprises multiple springs in parallel. 11 . The check valve of claim 7 , wherein the second spring mechanism is made of a metallic material. 12 . A method for stopping rotation of a flapper of a check valve, the method comprising: rotating a first flapper from an interface of the first flapper and a housing of the check valve; and decreasing a rotational velocity of the first flapper by deflecting a first spring mechanism with the first flapper at or near a location where the first flapper is desired to stop rotating. 13 . The method of claim 12 , wherein deflecting the first spring mechanism with the first flapper comprises deflecting multiple springs in parallel. 14 . The method of claim 12 , further comprising: rotating a second flapper from an interface of the second flapper and the housing of the check valve; and decreasing a rotational velocity of the second flapper by deflecting a second spring mechanism with the second flapper at or near a location where the second flapper is desired to stop rotating. 15 . The method of claim 14 , further comprising: terminating rotation of at least one of the first flapper and second flapper by contacting the at least one of the first flapper and second flapper with an over-center stop such that the at least one of the first flapper and second flapper rests against the over-center stop.
Assignees
Inventors
Classifications
- F16K15/033Primary
spring-loaded · CPC title
- F16K15/038Primary
having a common hinge · CPC title
Dividing and recombining in a single flow path · CPC title
Pivoted valves · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016010757A1 cover?
- A check valve with a housing and a first flapper rotatable about an axis between open and closed positions includes a first spring mechanism operatively positioned between a static component and the first flapper. When the first flapper is in the closed position there is a distance between the first spring mechanism and either the static component or the first flapper.
- Who is the assignee on this patent?
- Hamilton Sundstrand Corp
- What technology area does this patent fall under?
- Primary CPC classification F16K15/033. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jan 14 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).