Safety lockout for actuator shaft
US6439446B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/293
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A safety lock-out to prevent rotation of a rotary actuator is described. When an axial distance between a first and a second portion of an actuated mechanism exceeds a selected distance, the lock-out prevents the rotation. The safety lock-out includes a shaft rotatably connected to the first portion and axially movable relative to the second portion. A locking member is adapted to lock the rotary actuator by placing a protrusion in a notch of the shaft, thus preventing rotation of the shaft. The device also includes a spring member urging the locking member in the locking position, and an unlocking member adapted to urge the locking member in the unlocked position when the selected distance is not exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.