Electromagnetic valve
US5427352A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1994 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Aug 12, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2013/041
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The electromagnetic valve includes a magnetic housing (11, 12, 13), an electromagnetic coil (15) received in the magnetic housing and a plurality of movable parts including a movable magnetic armature (23,36) and a movable valve stem device (58) for valve opening and closing. To provide a damping of the motion of the movable parts, at least one of the movable parts (23, 36, 58), advantageously a part of the armature, is provided with a hollow compartment (72) and a damping mass (74) at least partial filling the hollow compartment (72). The volume of the hollow compartment (72) is greater than the volume of the damping mass (74) so that motions of the magnetic armature and other parts are damped by the frictional and impact losses occurring in the damping mass (74).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.