Anti back off screw on closure
US6296130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Nov 20, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Screw on caps for bottles that have an anti back off feature formed on a hinged tab of the cap engaging detent teeth below the threads on the bottle. The hinge has a unique configuration that enables the tab to snap into and hold a gripping position while avoiding temporary distortion or creep. The detent teeth are particularly suited for use with blow molded bottles and are capable of restraining a cap within a small angle of a fully tightened position to avoid any significant back off and potential leakage. In one embodiment, the anti back off feature is provided in a child resistant cap while in another embodiment this feature is provided in a simpler continuous thread cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.