Vehicle fenders – Buffer or bumper type – Bumper guard
Reexamination Certificate
2000-07-06
2001-11-27
Pape, Joseph D. (Department: 3612)
Vehicle fenders
Buffer or bumper type
Bumper guard
C293S120000, C293S128000, C293S155000
Reexamination Certificate
active
06322115
ABSTRACT:
The present invention relates to a bumper strip and to a bumper fitted with such a strip.
BACKGROUND OF THE INVENTION
It is known that the bumper of a motor vehicle can be protected by means of a strip which generally occupies a zone of the skin of the bumper that is the most exposed to rubbing against obstacles such as the bumpers of other vehicles, particularly while parking. The strip can have the same color as the bumper or it can be of a different color, depending on the look of the vehicle.
Such a strip is generally fixed in place by snap-fastening, and for this purpose the strip has resilient tongues on its longitudinal edges that penetrate into slots in the skin of the bumper.
The resilient tongues extend horizontally into the vehicle and project from the inside face of the skin of the bumper. By moving vertically, they can engage the skin, returning resiliently towards the outside of the strip, i.e. upwards for the tongues on the top longitudinal edge of the strip and downwards for the tongues on the bottom longitudinal edge of the strip.
That method of fixing serves to hold the strip in place, but it suffers from certain drawbacks.
Firstly, it has been found that the strip tends to shrink after molding, curling up on itself in vertical section so that the tongues on the top and bottom edges of the strip move towards each other, weakening them when it comes to fastening them to the skin of the bumper.
In an attempt or resolve that problem, fluting has been added to the skin in order to support the tongues horizontally and prevent them from moving towards each other while the strip is being removed, however such fluting makes it more difficult to put the strip into place.
In addition, the room available inside the skin of the bumper is not always sufficient to allow the snap-fastening tongues to extend far enough. A metal cross-member reinforcing the bumper is often located close to the skin thereof, which makes it necessary for fixing the strip to provide holes in the cross-member for receiving the resilient tongues.
OBJECTS AND SUMMARY OF THE INVENTION
The present invention seeks to provide a novel bumper strip whose fastening on the skin of a bumper does not present the drawbacks mentioned above.
The present invention provides a motor vehicle bumper strip, said strip having a channel-section with an upright web and being suitable for being fixed to a bumper by snap-fastening along the longitudinal edges thereof, the strip including at least one projection directed towards the inside of the channel-section on at least one of its longitudinal edges.
The strip of the invention does not have any fastening tongues extending its longitudinal edges and that would project from the inside face of the skin of the bumper when the strip is mounted on said skin.
Consequently, if a cross-member needs to be located in the immediate vicinity of the skin of the bumper, the presence of a strip of the invention does not require any hole to be made in the cross-member.
The projections from the strip perform the same function as the resilient tongues of prior strips, but in the strip of the invention, these projections are rigid and it is the resilience of the strip over its entire height that enables its longitudinal edges to move vertically and thus allow the projections to pass through when the strip is mounted on the bumper.
As a result, the strip of the invention cannot be spoilt by any shrinkage which might cause it to close up since any such change to the shape of the strip would serve merely to ensure that it holds onto the skin of the bumper more securely.
The strip of the invention also presents an advantage associated with manufacture by molding.
Whereas the previously-known strip required a mold that was relatively complex because of the presence of the resilient tongues which requires certain portions of the mold to move prior to the strip being ejected, this is no longer the case with the strip of the invention since the projections from the longitudinal edges of the strip can escape from the mold cavity by resiliently deforming the entire strip, in the same manner as is used when removing a strip from a bumper on which it has been snap-fastened.
The present invention also provides a bumper arranged to receive a strip as described above, wherein the skin of the bumper has two longitudinal grooves in its outside face, each for receiving a respective longitudinal edge of the strip, at least one of the grooves being defined internally by a resilient tab cut out in the skin, said resilient tab being capable of deforming resiliently to retract while a projection of the strip is being inserted and then returning resiliently to retain said projection after it has been inserted.
REFERENCES:
patent: 3606433 (1971-09-01), Kunevicius
patent: 4474395 (1984-10-01), Harloff et al.
patent: 4966245 (1990-10-01), Pfister
patent: 5149569 (1992-09-01), McCue
patent: 5202172 (1993-04-01), Graf
patent: 5290078 (1994-03-01), Bayer et al.
patent: 5338077 (1994-08-01), Haberle et al.
patent: 5498044 (1996-03-01), Bovellan et al.
patent: 6010169 (2000-01-01), Cox et al.
patent: 29 34 458 (1981-03-01), None
patent: 31 25 650 (1983-01-01), None
patent: 196 16 958 (1996-12-01), None
patent: 0 343 546 (1989-11-01), None
patent: 2 030 082 (1980-04-01), None
Compagnie & Plastic Omnium
Pape Joseph D.
Schweitzer Cornman Gross & Bondell LLP
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