Low reverse torque closure assembly
US5280842A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Dec 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/041
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention relates to two-piece child resistant closures which utilize a ratchet feature to screw on the closure and, more specifically, to a two-piece child resistant closure wherein a particular ratchet configuration and placement of the elements thereof provides negligible reverse torque during undepressed counter-clockwise rotation of the outer closure member. Negligible reverse torque is defined as the torque caused by frictional contact of the outer and inner cap members when the undepressed closure is turned in the removal direction is insufficient to cause the undesired or accidental removal of the closure from the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.