Actuator for rat deployment
US9415880B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Dec 29, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/262
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An assembly includes an actuator assembly having a housing, a piston positioned at least partially within the housing and movable relative to the housing for an overall actuation stroke, a first spring operatively engaged between the piston and the housing to provide actuation biasing force therebetween, a second spring operatively engaged with the piston, and a spring guide. The spring guide is operatively engaged with the first spring and operatively engaged with the piston via a sliding connection. The spring guide is further configured to limit a stroke of the first spring such that the first spring contributes actuation biasing force between the piston and the housing for only a fractional portion of the overall actuation stroke of the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.