Ratchet mechanism for head protection device
US11712082B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | May 7, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A ratchet mechanism for a hard hat and method of assembling the same are provided. The ratchet mechanism includes a knob with knob protrusions. The ratchet mechanism also includes a ratchet gear. The ratchet gear includes teeth engagement mechanisms. Each teeth engagement mechanism includes a hooking mechanism and a tooth protrusion. Each hooking mechanism is configured to engage with the knob protrusions. The ratchet mechanism also includes a band housing configured to allow a band to ratchetably move within the housing. The band housing also includes a knob engagement protrusion and a ratchet gear aperture configured with one or more teeth defining a ramped surface. The ratchet gear is disposed on the knob engagement protrusion and includes one or more ratchet gear teeth configured to engage with a set of band teeth on the band, such that the rotation of the ratchet gear tightens or loosens the band during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.