Hydraulic cartridge valve with activation sensor
US11530760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2020 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Sep 13, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K37/0083
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic cartridge valve including a housing with an interior, first and second ports that pass through the housing, a poppet in the housing interior, and an activation sensor. The poppet moves between a closed position that blocks flow through the housing interior between the first and second ports, and an open position that allows flow through the housing interior between the first and second ports. The activation sensor senses poppet position, and generate a valve open signal when the poppet is in the open position. The activation sensor can be a contact or contactless sensor, and can be located in an opening through the housing blocked by a diaphragm. A pushrod pushed by the poppet can activate the sensor, such that when the poppet blocks flow the pushrod is separated from the diaphragm, and when the poppet allows flow the pushrod is pushed towards the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.