Magnetic Displacement Measurement Unit, Transporting Device and Method
US-2022411237-A1 · Dec 29, 2022 · US
Integrated magnetostrictive linear displacement transducer and limit switch for an actuator
US8997628B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997628-B2 |
| Application number | US-46423809-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 12, 2009 |
| Priority date | May 26, 2008 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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.
The present invention relates to a position sensor and limit switch apparatus for an actuator. The actuator has a cylinder and a piston with at least one magnetized portion reciprocatingly disposed within the cylinder. The apparatus includes an elongate housing aligned parallel with the cylinder. A magnetostrictive linear displacement transducer is disposed within the housing for sensing the position of the at least one magnetized portion. The apparatus includes a switch means responsive to the transducer for operatively interrupting actuation of the piston upon the at least one magnetized portion reaching a limit position.
First claim
Opening claim text (preview).
What is claimed: 1. In combination, a hydraulic actuator for a marine craft, and a position sensor and limit switch apparatus therefor, the hydraulic actuator having a trim cylinder and a piston with at least one magnetized portion reciprocatingly disposed within the trim cylinder, said at least one magnetized portion of the piston comprising an annular magnet, the annular magnet having an aperture with a tapered wall extending therefrom, the piston including a central member exten…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8997628B2 cover?
- The present invention relates to a position sensor and limit switch apparatus for an actuator. The actuator has a cylinder and a piston with at least one magnetized portion reciprocatingly disposed within the cylinder. The apparatus includes an elongate housing aligned parallel with the cylinder. A magnetostrictive linear displacement transducer is disposed within the housing for sensing the po…
- Who is the assignee on this patent?
- Sall Kelly, Mytting Christopher Bruce, Wong Tat Lung Ray, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G01D5/485. Mapped technology areas include Physics.
- 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).