Safety device for preventing unauthorized actuation of a touch-actuated mechanism
US4110928A · kind A · utility
Inventor
Key dates
| Filing date | Mar 24, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Mar 24, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A17/063
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Trigger or touch-actuated or screw-cap actuated safety device for trigger or touch-actuated or screw-cap actuated mechanisms is provided having a pivotally mounted magnetically responsive bar positioned on the inside of the handle on the rear of the trigger. When the bar is oriented centrally, sufficient movement of the trigger is inhibited to prevent actuation of the device. The bar may be mounted in a non-magnetizable casing. The user of the device, by wearing a magnetic ring, displaces the bar from its central orientation and allows for sufficient movement of the trigger for actuation. The present invention may also be employed to selectively inhibit operation of touch-actuated devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.