Apparel – Guard or protector – For wearer's head
Reexamination Certificate
1999-10-12
2001-07-03
Neas, Michael A. (Department: 3741)
Apparel
Guard or protector
For wearer's head
Reexamination Certificate
active
06253386
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a mechanical device that is designed to keep the visor of a motorcycle safety helmet entirely embedded and flush with the cap of the helmet, when it is in closed position, to prevent surface discontinuities in the cap and, consequently, to improve its streamline.
2. Description of the Prior Art
As is known, the visors for motorcycle safety helmets and in particular the so-called “integral” helmets, are anchored on both sides of the helmet and externally with respect to the cap, to allow their lifting and lowering relative to a porthole-aperture. The porthole aperture is usually obtained above a chin protector; wherein the anchoring of the ends of the visor on the external surface of the cap, involves unattractive aesthetic effects and external encumbrances. In addition, these anchoring ends interrupt the continuity of the external surfaces of the helmet both when the visor is closed and when it is open upwards.
In addition, the present visors for integral helmets are not always able to maintain a stable closing between the peripheral gasket of the porthole-aperture and the arched surface of the visor.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to create a mechanical device, applied to the inside right and left sides of the porthole-aperture of a helmet for motorcyclists and the like, that is designed to keep the visor entirely embedded and flush with the cap of the helmet when it is in closed position. This design allows the helmet to be free from surface discontinuities and, as a consequence, more aesthetically agreeable.
Another object of the invention is to create a device for integral helmets that is designed to remain housed on an inside face of a suitable seat disposed in the helmet and closed by the visor. This device keeps the visor entirely embedded in the edge of the helmet porthole-aperture and allows the stable stop of the visor in intermediate opening positions.
A further object of the invention is to provide a device for moving the visor, that is simple in design and easy and quick to activate and highly reliable.
These and still other objects, which will be more clearly stressed later on, are achieved by a couple of similar mechanical devices, that are hand activated and co-operate with each other, to keep the helmet visor for motorcyclists in an entirely embedded position and flush with the external surface of the helmet cap. Each of these devices comprise:
a base plate whereon a first slide is translatably mounted in both directions and with a fixed travel, wherein the first slide has on one end a raised bush and a series of preloaded thrust-springs. This bush and these thrust-springs keep the first slide pushed forwards towards the porthole-aperture of the helmet. On its opposite end, is disposed a return spring shaped as a rotating cam in opposition to a preloaded spring.
There is also a disk-like body, rotating in touch with the base plate, and having opposite raised flanks having opposite guide grooves parallel to each other and inclined with respect to the plane of the external slide.
In addition, there is also an internal slide, translatable between the raised flanks of the rotary body and having on one end, arched beveling, which engages with the bush integral with the external slide and translates together with the slide. In addition, there is on its opposite end, a pin whereon a bush rotates that is intended for freely sliding within an arched groove disposed in the base plate and concentric with the rotary body;
two pairs of bar-shaped connecting rods, each of which has an end riveted on an internal slide. There is also a pin, protruding from each flank of each connecting rod, translatable within the grooves disposed in the flanks of the rotary body. The opposite end of the pin is hinged to a plate or table for guiding and supporting means for hooking the visor to the table. These connecting rods are subject to a combined translation and rotation motion, after each shifting of the external slide, of an amplitude to cause the table to take o n a position inclined towards the outside of the helmet. This movement results in the visor being in an advanced position with respect to its closed position and ready for its rotation towards the upper part of the helmet. There is also a release lever opposite to the return spring. This release lever contains an arched profile acting on a wedge-shaped contrast means integral with the external slide. This release lever is suitable to allow the translation of the external slide by effect of its thrust springs by means of tie-rod elements or the like connecting the release lever of both devices for moving the visor and actionable from the outside of the helmet. This results in the ensuing shifting of the table and the related visor to the outside of the helmet in the position suitable to effect the rotation of the visor until it is entirely open.
More particularly, this base plate of the couple of visor activating devices is anchored in the inside of the right and left sides of the porthole-aperture of the helmet cap, opposite to each other, to allow both of the visor-holding tables to take on a similar inclined position towards the outside of the helmet.
In addition, the rotary body, rotatably mounted on the base plate, contains at least a couple of protruding teeth disposed on its periphery and spaced apart from each other and suitable to sequentially engage, a sheet spring. The engagement of the sheet spring occurs during the rotation of the rotary body, with corresponding recesses being disposed on an arched flexible element. The sheet spring is anchored to the internal peripheral edge of the base plate, to allow the table to stop in intermediate positions of the visor during the stage of upwards opening.
Still besides, the base plate has peripherally a raised edge having a gasket formed from elastically yielding material.
REFERENCES:
patent: 4242757 (1981-01-01), Nava
patent: 4247960 (1981-02-01), Nava
patent: 4297747 (1981-11-01), Nava
patent: 4615052 (1986-10-01), Nava
Collard & Roe P.C.
Neas Michael A.
Opticos S.r.l.
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