US 11,712,082 B2
Ratchet mechanism for head protection device
Durgam Gangadhar, Charlotte, NC (US); Bharat Bhushan Arora, Charlotte, NC (US); and Swapnil Gopal Patil, Charlotte, NC (US)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed on Jan. 19, 2021, as Appl. No. 17/152,171.
Claims priority of application No. 202011002505 (IN), filed on Jan. 20, 2020.
Prior Publication US 2021/0219647 A1, Jul. 22, 2021
Int. Cl. A42B 3/14 (2006.01)
CPC A42B 3/145 (2013.01) 20 Claims
OG exemplary drawing
 
1. A ratchet mechanism for a hard hat, the ratchet mechanism comprising:
a knob with a plurality of knob protrusions, wherein the plurality of knob protrusions comprises four knob protrusions that are positioned 90 degrees from one another;
a ratchet gear, the ratchet gear comprising a plurality of teeth engagement mechanisms, each teeth engagement mechanism comprising a hooking mechanism and a tooth protrusion, wherein each hooking mechanism is configured to engage with one of the plurality of knob protrusions; and
a band housing configured to allow a band to ratchetably move within the band housing, the band housing comprising a knob engagement protrusion and a ratchet gear aperture configured with one or more teeth surrounding the ratchet gear aperture, the teeth defining a ramped surface,
wherein the ratchet gear is disposed on the knob engagement protrusion and the ratchet gear further comprises one or more ratchet gear teeth configured to engage with a set of band teeth on the band, such that a rotation of the ratchet gear tightens or loosens the band during operation.