Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Reexamination Certificate
2001-01-16
2003-06-24
Lev, Bruce A. (Department: 3634)
Fire escape, ladder, or scaffold
Torso harness
Strand-engaging, with descent retarder
C182S003000, C182S005000, C244S15100A
Reexamination Certificate
active
06581726
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a manufacturing process of a wear resistant attachment device for a sit harness or a roping harness, comprising a joining strap made of flexible synthetic material.
STATE OF THE TECHNIQUE
An attachment device used in known manner in roping harnesses is represented in FIG.
10
. The protective sheath G and the positioning strap
10
are formed by two distinct parts. The protective sheath G is achieved either by a tubular strap fitted onto a resistant strap
18
or by a fabric wound round the resistant strap
18
and stitched. The positioning strap
10
then has to be inserted between the sheath G and the resistant strap
18
. Implementation of such an attachment device does not enable optimum protection of the resistant strap
18
to be obtained.
OBJECT OF THE INVENTION
The object of the invention is to achieve a manufacturing process of an attachment device for a sit harness or a roping harness enabling the mechanical assembly strength to be improved and implementation of protection against friction to be simplified.
The process according to the invention is characterized in that:
a first strap is used having an enlarged part bounding joining edges protruding out with respect to the extensions,
the first strap is positioned flat on a second strap or an extension of said first strap,
the edges are folded towards one another through 180° to come into contact with the opposite face of said second strap,
and seams are stitched along the edges to constitute wear resistant overlap parts protecting the opposite edges of the second strap or of the extension against the friction faces.
According to one feature of the invention, the first strap comprises an enlarged part of greater width than the width of each extension.
According to one feature of the invention, the second strap has a width smaller than the width of the enlarged part and greater than or equal to the width of the extensions.
The invention also relates to a wear resistant attachment device for a sit harness or a roping harness obtained according to the process.
REFERENCES:
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patent: 4651870 (1987-03-01), Giambalvo
patent: 4971645 (1990-11-01), Licus
patent: 5203482 (1993-04-01), Puff
patent: 5560083 (1996-10-01), Teixeira
patent: 5615750 (1997-04-01), Phillips
patent: 5676178 (1997-10-01), Ehnimb
patent: 6159136 (2000-12-01), Belias et al.
patent: 6189651 (2001-02-01), Sadeck
patent: 35 32 011 (1987-03-01), None
patent: 2 498 456 (1982-07-01), None
patent: 2 702 524 (1994-09-01), None
patent: 2 750 609 (1998-01-01), None
Hede Jean Marc
Petzl Paul
Lev Bruce A.
Oliff & Berridg,e PLC
Zedel
LandOfFree
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