Apparel – Guard or protector – For wearer's head
Reexamination Certificate
2000-09-26
2001-05-29
Lindsey, Rodney (Department: 3741)
Apparel
Guard or protector
For wearer's head
C002S424000
Reexamination Certificate
active
06237161
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a revised structure for a compound protective helmet, and more particularly, to one allows the restriction device to secure firmly to the chin protector without loosening up or falling off, and better hooking and restricting effects of the restriction device than before
2. Description of the Prior Art
Whereas, in the prior art of the compound protective helmet, the inadequate structural design leads to poor restriction effects and inconsistent operation. The present inventor thus improves the prior art by tackling the defectives, and publishes the ┌Compound Protective Helmet┘, which has been filed for an utility patent, allotted Ser. No. 09/425,137, to the US Patent Office. Said application has been examined with positive outcomes of better and more stable restriction effects than the prior art, and has been awarded a patent. The prevent inventor feels no complacent about the achievement and continues to investigate possible improvement of said case restlessly. Consequently, some of the structural designs that can be further improved have been discovered.
Referring to the original descriptions and drawings of the patent, the original compound protective helmet is essentially comprised of a bubble
1
, a visor
2
, which can allow two-stage lift, and a chin protector
3
are pivoted to the bubble
1
; within, a restriction device
4
is fixed at the inner edge of the chin protector
3
to become a full mask protective helmet. Though the prior art gives consistent visor lift operation and firm restriction of the visor when closed, the following defectives in terms of its structural design and practical use are found:
1. The whole set of restriction device
4
can only be restricted by two limit pieces
461
on the left and right, and the limit pieces also make a restriction lever
44
insert into a guide rail
412
and fix at the inner edge of the chin protector
3
. The whole design is not solid enough to ensure a firm connection.
2. The end of the restriction lever
44
is a shape of simple strip; at the state of full mask protective mask, the restriction lever
44
is inserted into the restriction trough
141
at both sides of the bubble
1
, without having real restricting and positioning effects. If the chin protector
3
is under externally applied force, the restriction lever
44
retreating from the restriction trough
141
can easily occur.
3. Two slope positioning arcs
45
are protruding inside the chin protector
3
; the configuration increases not only the difficulty in making die for the chin protector
3
, but also the possibility of striking or breaking of the slope positioning arcs
45
.
According to the foregoing, the present inventor tries to improve the chin protector
3
and the restriction device
44
. Consequently, numerous trials and modifications lead to the publication of the present invention.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a compound protective helmet that ensures firm fixing and restricting connection of the restriction device.
REFERENCES:
patent: 4689836 (1987-09-01), Vitaloni
patent: 4766615 (1988-08-01), Morin et al.
patent: 4769857 (1988-09-01), Cianfanelli et al.
patent: 5084918 (1992-02-01), Breining et al.
patent: 5177816 (1993-01-01), Schmidt et al.
patent: 5553329 (1996-09-01), Casartelli
patent: 5687427 (1997-11-01), Lamattina et al.
patent: 5813048 (1998-09-01), Thom
Lindsey Rodney
Lung Huei Safety Helmet Co., Ltd.
Pro-Techtor Inter-national Services
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