Protective helmet

Details Protective helmet Protective helmet

1999-05-07

2001-09-04

Neas, Michael A. (Department: 3741)

Apparel

Guard or protector

For wearer's head

C002S006400, C002S006500

Reexamination Certificate

active

06282726

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improvement for a protective helmet, and more particularly for a helmet including at least two pivotable front protective shields.
2. Description of Background and Relevant Information
Protective helmets have been commonly used for a very long time in various fields, either professional, as is the case for military personnel, airplane or helicopter pilots, police officers or firefighters, or civilian or private, as is the case for users of motorcycles, rally or race cars, or employees of work sites.
There is no shortage of applications, and a large number of helmets which have a rigid external shell substantially spherical in shape adapted to closely fit the skull of the user, with a face opening at the front for the face, are already known. Moreover and generally, the helmet includes an internal envelope made of synthetic foam adapted to absorb shocks. Some helmets have a transparent face shield movable between a low protective position and a high retracted position. To that end, the shield is mounted on the helmet pivotably around a transverse axis, with the shield being displaced by pivoting to be positioned in front of the nose of the user.
Some helmets have a smaller second shield, or an eye shield, mounted to pivot coaxially with the face shield.
The result is that the second shield is pivoted into the low position under the same pivoting conditions as the face shield, adapted to cover the nose of the user. As a result, the eye shield in the low position is not in a good position.
SUMMARY OF THE INVENTION
An object of the invention is to overcome the drawbacks found in helmets having two pivoting shields by proposing a particularly simple construction according to which the respective axes of the two shields are not coaxial, but which are distinct and different in their positions, in contrast with the prior art helmets. Thus, because of the proposed construction, each of the shields has its own pivot path, appropriate to its destination.
Thus, the protective helmet according to the invention is of the type with an external shell and at least two protective shields, i.e., a first shield and a second shield, both pivotable with respect to the shell between two positions, i.e., between a low active position of use and a high inactive position of non-use, whereby the first shield is pivotable around a transverse axis different from the transverse pivot axis of the second shield.
According to further preferred characteristics, the first shield is a face shield with larger dimensions than the second shield. Thus, the two shields are each comprised of a transparent wall which is substantially a portion of a sphere, and the radius of the transparent wall of the first shield is greater than the radius of the transparent wall of the second shield, while in the low position of use and/or in the high position, the front wall of the second shield is arranged behind the front wall of the first shield.
In addition, according to a preferred embodiment, in the high position of use, the front wall of the second shield is substantially parallel to the front wall of the first shield.
According to another characteristic, the two shields are mounted to pivot on an internal intermediate part attached to the external shell.
It is also noted that, advantageously, the pivot axis of the second shield is arranged farther forward and higher than the pivot axis of the first shield.


REFERENCES:
patent: 2362610 (1944-11-01), Bowers
patent: 2419649 (1947-04-01), Lieg
patent: 4689836 (1987-09-01), Vitaloni
patent: 4769857 (1988-09-01), Cianfanelli et al.
patent: 4794652 (1989-01-01), Piech Von Planta et al.

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