Patent Application
20120297520
The present specification relates to a headgear or suspension of the type used in a head safety product such as a face shield, hardhat or welding helmet. More particularly, the specification is directed to a spring buffered occipital cradle mounted on the rear portion of the horizontal band of the headgear to improve the fit, function, stability and comfort of the headgear.
An improved headgear includes a spring buffered cradle mounted on the horizontal band of the headgear to improve the fit, function, stability and comfort of the headgear. The cradle is flexible and has a concave inner surface contoured to conform to the shape of the head. A buffer spring is coupled between the cradle and the horizontal band to buffer or absorb the tension between the horizontal band and the head and more equally distribute pressure across the head. In a preferred embodiment, the cradle is located in the rear of the headgear to engage the occipital area of the head and includes two spaced leaf springs coupled to the rear portion of the horizontal band.
More specifically, the preferred embodiment of the headgear comprises a horizontal band encircling the head, an adjustment mechanism configured and arranged to adjust a circumference of the horizontal band, a vertical cross-band extending over the crown of the head, a flexible cradle having a generally concave inner surface contoured to conform to the occipital area of the head, and a pair of buffer springs coupled between the cradle and the horizontal band to buffer tension and absorb pressure between the horizontal band and the head.
The horizontal band preferably includes a front portion that extends across a forehead area and a rear portion that extends downwardly and rearwardly below an equatorial region of the head and across an occipital area of the head. The adjustment mechanism is centrally located on the rear portion of the horizontal band and is flanked on both sides by the opposed leaf springs. The first leaf spring is coupled between a left lobe of the cradle and the rear portion of the horizontal band to the left of the adjustment mechanism while the second lead spring is coupled between a right lobe of the cradle and the rear portion of the horizontal band to the right of the adjustment mechanism. The leaf springs are preferably, integrally formed with said cradle where the leaf springs each have a proximal first end integrally formed with the cradle and a distal second end formed in the shape of a loop that slidably encircles said horizontal band.
In use, the loops allow the cradle to slide relative to the horizontal band as well as to tilt slightly. This loose movement permits the cradle to follow the expansion and contraction of the horizontal band during adjustment and conform more readily to the shape of the head. Most important for commercialization of the idea, the loops make the cradle compatible with existing headgear having a horizontal band, whereby the cradle can be adaptively fit into existing headgear already deployed in the field.
Accordingly, an objective is to provide a headgear that improves fit, function, stability and comfort.
Another objective is to provide a cradle for a headgear that is flexible and self-adjusting.
Yet another objective is to provide a cradle that cups the head below the equatorial region to provide an improved fit.
Still another objective is to provide a spring buffer for the cradle that more equally distributes or buffers pressure between the horizontal band and the head.
Finally, it is yet another objective to provide a cradle which is readily adaptable to both new headgear and headgear already deployed in the field.
Other objects, features and advantages shall become apparent as the description thereof proceeds when considered in connection with the accompanying illustrative drawings.
A preferred embodiment will now be described further by way of example with reference to the following examples and figures, which are intended to be illustrative only and in no way limiting upon the scope of the disclosure.
Generally, an improved headgear as illustrated and described herein includes a spring buffered cradle mounted on the horizontal band of the headgear to improve the fit, function, stability and comfort of the headgear. The cradle is flexible and has a concave inner surface contoured to conform to the shape of the head. A spring element is coupled between the cradle and the horizontal band to buffer the tension between the band and the head and more equally distribute pressure across the head. In a preferred embodiment as illustrated, the cradle is located in the rear of the headgear to engage the occipital area of the head and includes two leaf springs coupled to the rear portion of the horizontal band. However, other configurations of the headgear and cradle are also contemplated where a similar cradle could be located in the front of the headgear or on the top of the headgear, or even further, on multiple areas of the headgear.
Referring to
The face shield 10 comprises a crown generally indicated at 12, a transparent lens generally indicated at 14 secured to the crown 12, a headgear generally indicated at 16 pivotably attached to the crown 14, and a spring buffered cradle generally indicated at 18 mounted on a horizontal band 20 of the headgear 16 to improve the fit, function, stability and comfort of the headgear 16.
The crown 12 is preferably a molded plastic component having an arcuate shape contoured to conform to the shape of the forehead. The crown 12 includes a forward edge 22 and a rearward edge 24 that meet at opposing sides to form opposing pivot tabs 26, 28.
The headgear components are preferably molded from a resilient plastic material and generally comprise the horizontal band 20 that encircles the head, a vertical cross-band 30 extending over the crown of the head, and a rack and pinion adjusting mechanism 32 for sizing the horizontal band 20 to a desired circumference and depth to achieve a desired fit on the user's head.
The horizontal band 20 includes a front portion 34 that extends across a forehead area and a rear portion 36 that extends downwardly and rearwardly below an equatorial region of the head and across an occipital area of the head. The front portion 34 of the band preferably includes a cushioned pad 38 extending across the brow area.
The adjustment mechanism 32 is centrally located on the rear portion 36 of the horizontal band 20 and has a well-known construction for sizing the horizontal band 20 to a desired circumference and depth. As is well known, opposing sides of the rear portion 36 of the horizontal band 20 overlap at the rear and are captured within the adjusting mechanism 32. Turning the adjustment knob 40 in one direction pulls the band ends closer while turning the knob 40 in the other direction forces them apart.
The vertical cross-band 30 also includes overlapping portions, which can be adjusted and secured for proper size and fit.
Referring to
Referring 7-12, the cradle 18 has a flexible body 60 and a generally concave inner surface 62 contoured to conform to the occipital area of the head. Turning to
Still referring to
While the spring elements of the preferred embodiment are configured as leaf springs 74, 76, this should not be limiting as it is contemplated within the scope of the disclosure that other configurations of springs could be equally effective in providing a buffer between the cradle 18 and the band 20.
The inner surface 62 of the cradle 18 is provided with a cushioned pad 86 that further improves the fit of the cradle 18. Preferably, the cushioned pad 86 is molded onto the surface of the cradle 18 in a two-shot injection molding process, which is known in the art.
In summary, it can be appreciated from the foregoing description and illustrations that the shape and position of the cradle 18 is such that it gently cups the head below the equatorial region of the head and gently grips around the mastoid bone area (occipital area) creating a more secure fit with far less clamping force. The cradle configuration is completely passive and requires no additional effort by the end user to use or adjust. The adjustment mechanism 32 is the same as currently known by the user and thus requires no additional training. In use, the cradle 18 follows the expansion and contraction of the horizontal band 20 and automatically adjusts to the size accordingly. The cradle 18 is self-adjusting and aligning allowing it to gently conform in shape to the user's head and seat itself in a manner that equally distributes contact and pressure on the rear of the user's head. In this regard, the leaf springs 74, 76 are a critical aspect of cradle 18 in buffering the tension on the horizontal band 20 and absorbing impact to the supported safety product. As the band 20 is tightened the leaf springs 74, 76 flex to more equally distribute any pressure as opposed to localizing any pressure. Because the cradle works in a cupping manner securely below the equatorial region of the head, it provides a secure fit and feeling with far less tension and pressure that a standard headgear arrangement. The spring and flex of the leaf springs 74, 76 further allows the user to don and doff the headgear easily without loosening and tightening the headgear 16 each time.
Accordingly, among the objectives of the improved headgear 16 are to provide a headgear that improves fit, function, stability and comfort, to provide a cradle 18 for a headgear that is flexible and self-adjusting, to provide a cradle that cups the head below the equatorial region to provide an improved fit, to provide a spring buffer for the cradle that more equally distributes or buffers pressure between the horizontal band and the head, and to provide a cradle which is readily adaptable to both new headgear and headgear already deployed in the field.
For these reasons, the present headgear and cradle are believed to represent significant advancements in the art, which have substantial commercial merit.
While there is shown and described herein certain specific structure embodying the headgear and cradle, it will be manifest to those skilled in the art that various modifications and rearrangements of the parts may be made without departing from the spirit and scope of the underlying concept and that the same is not limited to the particular forms herein shown and described except insofar as indicated by the scope of the appended claim.
