Lockable latching device
US10081969B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 14, 2015 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Jun 9, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03G7/062
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A lockable latching device includes a body defining a cavity therein and having a central longitudinal axis, and a plunger disposed within the cavity. The plunger has a first end and a second end and is translatable with respect to the body along the axis between an open position and a closed position. The device also includes an annular rotator spaced apart from the body along the axis and configured for rotating the plunger about the axis. The device includes an annular latch abutting the rotator that is transitionable between an unlocked state and a locked state. The device also includes an element attached to the latch and formed from a shape memory alloy that is transitionable between an austenite crystallographic phase and a martensite crystallographic phase in response to an activation signal to thereby transition the latch from the locked state to the unlocked state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.