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Патент USA US3094744

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June 25, 1963
A. HOYLER
3,094,734
WINDSHIELD WIPER
Filed Nov. 27, 1959
2 Sheets-Sheet 1‘
June 25, 1963
A. HOYLER
37,094,734
WINDSHIELD WIPER
Filed NOV. 27. 1959
2 Sheets-Sheet 2
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United States Patent ‘*O?ice
Patented June 25, 1963
1
2
with the end portions of the blade and which have at their
3,094,734
_
_
-
WINDSHIELD WlPER
ends claws 2 for holding the blade at four spaced points
.
along its length. , The holding members 11 are pivotally
connected atv 11a to the ends of an elongated arched con
Alfred Hoyler, Buhlertal, Baden, Germany, assign'or to
Robert Bosch G.m.b.H., Stuttgart, Germany
Filed Nov. 27, 1959, Ser. No. 855,732
_ ,
Claims priority, application Germany Dec. 4, 1958
5 Claims. ((31. 15—'250.42)
necting member 12, and the latter is pivotally connected
to a wiper arm by a connectorlZa pivotally connected to
the member 12 at 12b. The wiper arm is driven back and
forth by, a suitable mechanism (not shown) well known
The present invention relates to windshield wipers.
More particularly, the present invention relates to wind 10 _ The wiper blade lrhas a rear beam portion 3‘ as well as
shield‘ wiper blade constructions.
'
a protective beam portion‘ 4 arranged oneach side. The
.It is an object of the present invention to. provide a wind
protective beam portions form the widest part of the
shield wiper having aireinforced blade which is so con
pro?le of the bladeso that even if the, blade assumes a
structed that there is no metallic contact between the re
tilted position there is no danger of, any metal parts touch
inforcement and the parts which hold the blade.
15 ing the windshield. In this way, the windshield will not
It is another object of the present invention to provide
be scratched by the metal parts.
..
in
a windshield wiper which is so'constructed that no metal
the
art.
.
_
.
>
.
The blade Lake has supporting beam means 5 on each
lic part will ever touch the windshield being wiped.
side of the blade. H These means5 are arranged interme
The objects of the present invention further include the
diate the rear beam 'portion 3 and the protective beam por
provision of a windshield wiper which is of sturdy con 20 tion 4.0n the corresponding side of the blade, and extend
struction, which may be mass-produced at low cost, and
at least atthogse points along the length of the blade at
which will give long periods of trouble-free service.
which the blade is engaged by the claws 2. Here it will
With the above objects in view, the present invention
be noted that the protective beam portion 4 need be pro
mainly resides in a Windshield Wiper incorporating an
vided only at those portionsat which the means 5 of the
elongated wiper blade having a rear beam portion, a pro 25 blade are encompassed vby the claws 2 (and by the claw
tecting beam portion on each side of the blade, and sup
13, to be described later), but may, as shown in the draw
porting beam means on each side of the blade. The sup
ings, extend throughout the entire length of the blade.
porting beam means are arranged intermediate the rear
,In, that case, there is formed between ‘each protective beam
beam portion and the protective beam portion on the
portion 4 and the actualiwiper lip 14'of the blade an
corresponding side of the blade and are located at least
elongated groove 14a which extends throughout the entire
_at those points along the length of the blade at which
lengthoftheblade.
f
,..
..
,
.I
,
the blade is engaged by holding claws.
.
According
to
the
present
invention,
the
blade
1 is re
More particularly, the present invention resides in
inforced with, two elongated reinforcing springs 9 made
that combination which incorporates the above-described
of steel or other metal. , These springs 9 are ‘received in
blade as well as holding means whose claws encompass 35 elongated grooves which the supporting beam means 5
and the rear beam portion 3 form between each other.
the supporting beam means. The rear beam portion .and
each supporting beam means form between themselves
an elongated groove, and a reinforcement is arranged in
each of these grooves. The width of each reinforcement
is less than the depth of the groove within which it is
arranged so that physical contact between the claw means
and the reinforcements is prevented. Also, the reinforce
ments are shorter than the grooveswithin which they are
arranged, so that the end portion of the blades are free of
reinforcements.
As is clearly shownrin the drawings, the width of the re
inforcement springs 9 is less ,thanthe depth of the grooves
within which they are arranged, so that physical contact
between the reinforcement springs 9 and the claws 2 is
prevented, thus avoiding. metal-to-metal contact. The
end portions 8 of the springsf9 are received in closed pock~
45
The novel features which are considered as characteris
tic for the invention vare set forth in particular inpthe ap
pended claims. The invention itself, however, both as
to its construction and its method of operation, together
with additional objects and advantages thereof, will be
best understood from the following description of speci?c
ets 7a, so that with the springs 9 being shorter than the
grooves within which they lie, the end portions 7 of the
blade l'are free of reinforcements. The pockets 7a are
located close to the dorsal line oflthe blade, i.e., they are
near the surface of the rear beam, portion 3‘.
‘If desired, the end portions 107 of the blade may be
50 open as shown at 107a in FIGS. 6 and 7, and the reduced
end portions 108 of the reinforcement springs 105‘ are re
ceived in these open ends. It will be noted that here, too,
the reinforcementsprings are shorter than the blade itself
panying drawings, in which:
_
,
so that the end portions of the blade ‘are likewise free of
FIG. 1 is a side elevational view of a windshield wiper
55 reinforcements and no metallic part protrudes beyond the
according to the present invention;
embodiments when read in connection with the accom
ends of the blade.
FIG. 2 is a sectional view taken on line 11-11 of
FIG.
1;
p
v
.
,
1;
,
I
_
.
provide one :or more additional clamps or claws 13 for
FIG. 3 is a sectional view taken on line III—HI of
FIG.
, ,
If the blade is relatively long, it may be advisable to
securing the reinforcements *9. These additional claws,
,
I FIG. 4 is a sectional view taken on line IV—IV of 60 only one of which is shown, are independent of the above
FIG. 1;
=described holding means but also encompass the support
beam means 5. In order to prevent longitudinal displace
_
FIG. 5 is a sectional view taken an line V—V‘of FIG. 1;
inent of the’lclaw .13, it is seated in an appropriately
shaped recess formed in‘ the rear beam portion 3.
, ,FIG. 6vis,a sectional view corresponding to that of
FIG. 5 but illustrates a modi?ed embodiment of the pres~
ent invention; and
.
p
i
-
_,
FIG. 7 is a sectional view taken on line VII—VI[ of
FIG. 6.
'
a
.
.
. Referring now to the drawings ‘and to FIGS. 1 to ,5
65
The blade is also formed with ‘abutment, means 10 ar—
ranged 'on the rear beam, portion 3 for engaging those end
portions vof the holding members 111, which are directed
toward the ‘center of the blade, namely, the end portions
v11b, so as to preventmovement of the holding members
thereof ‘in particular, there is shown a windshield wiper
incorporating an elongated rubber wiper blade 1 and hold 70 ‘towardthe center. _ In this
the, blade cannot slip out
ing?meansin‘ the form of two metallic, elongated and
of the claws 2 of the holding members 11. These abut
slightly arched holding members 11 which are coextensive
ment means may either be integral with the wiper blade,
3,094,734
3
V
or they may be made of separate pieces which are subse
quently fastened to the blade in any suitable manner.
It will be seen from the-above that according to the
present invention the reinforcement springslare s_o em
bedded so they cannot con-tact the holding members 11
or their claws 2, thereby preventing all metal-to-metal
4
means on each side of said blade, said supporting beam
means being arranged intermediate said rear beam por
tion and the protecting beam-portion on the corresponding
side of said blade and being located at least at those points
along the length of said blade ‘at which said claw means
engage said blade by encompassing saidsupporting beam
which the reinforcements are located, so that the blade is
means, said ‘rear beam portion and each of said support
ing beam means forming between themselves an elongated
groove having an open outer side, an elongated ?at rein
forcement arranged in each of said grooves, the width of
‘not unnecessarily weakened.’ Also, due to the fact that
the reinforcements are shorter than the blade itself, they
cannot protrude beyond the ends of the blade so that here‘,
ment being at least slightly spaced inwardly from the open
contact within the blade. At the same time, the'arrange
ment of the parts is such that the grooves within which the
holding claws are received are not as deep as those within
each of said reinforcements being less than the depth of
the groove within which it is arranged and each reinforce
too, no metal-to-metal contact is possible. wl-iurthermore, ' i side of .the respective moove so that physical contact be
the arrangement of the parts is such that thanks to the 15 tween said claw means and said reinforcements ispre
protective beam portion ‘4 no metal part of the windshield
wiper can touch the surface of the windshield being wiped.
Also, thanks to the above-described abutment means the
holding members are prevented from moving relative to
the blade proper, so that even if the wiper is used for 20
sharply curved Windshields, there will be no chattering or
rattling of metallic parts against each other.
It will also be seen that all of the above advantages are
vented, and at least one additional claw means independ
ent of said claw means for holding said blade, said addi
tional claw means also encompassing said supporting
beam means.
’
'
i
‘3. In a windshield wiper, the combination which com
prises an elongated wiper blade and claw means for hold
ing said blade at spaced points along its length, said wiper
blade having a rear beam portion, a protective beam por
tion on each side of said blade, and supporting beam
obtained While maintaining the construction of the blade
extremely simple, so that it
be manufactured and 25 means on each side of said blade, said supporting beam
means being arranged intermediate said rear beam portion
massproduced at low cost.
_
and the protecting beam portion on the corresponding
It will be understood that each of the elements described
side of said blade and being located at least at those points
above, or two or more together, may also ?nd a useful
along the length of said blade at which said claw means
application in other types of wiper blades differing from
engage said blade by encompassing said supporting beam
the types described above.
‘ 30
means, said rear beam portion and each of said support
While the invention has been illustrated and described
as embodied in a windshield wiper construction, it is not
intended to be limited to the details shown, since various
modi?cations and structural changes may be made without
ing beam means forming between themselves an elon
gated groove having an open outer side, an elongated ?at
reinforcement arranged in each of said grooves, the width
departing in any way from the spirit of the present inven 35 of said reinforcements being less than the depth of the
groove within which it is arranged and each reinforcement
being
at least ‘slightly spaced inwardly from the open side
Without further analysis, the foregoing ‘will so fully re
tion.
'
a
veal the gist of the present invention that others can by
applying current knowledge readily adapt it for various
applications without omitting features that, from the
of the respective groove so that physical cont-act between
said claw means and said reinforcements is prevented, and
at least one additional claw means independent of said
standpoint of prior art, fairly constitute essential charac
claw means for holding said blade, said additional claw
teristics of the generic or speci?c aspects of this invention
and, therefore, such adaptations should and are intended
to be comprehended within the meaning and range of
portion and also encompassing said supporting beam
means being seated in a recess formed in said rear beam
means.
I
4. In a windshield wiper, the combination which com
45
equivalence of ‘the following claims.
'
prises an elongated wiper blade and holding means'com
What is claimed as new and desired to be secured by
Letters Patent is:
_
_
1. In a windshield wiper, the combination which com
prises an elongated wiper blade and claw means for hold
prising two elongated holding members which are coexten
sive with the end portions of said blade, each of said
holding members having at its end claw means for bold
ing said blade at spaced points along its length, said wiper 50 ing said blade at four spaced points along its length, said
wiper blade having a rear beam portion, a protective beam
blade having a rear beam portion, a protective beam por
portion on each side of said blade, and supporting beam
tion on each side of said blade, and supporting beam
means on each side of said blade, said supporting beam
means on each side of said blade, said supporting beam
means being arranged intermediate said rear beam por
means being arranged intermediate said rear beam por
tion and the protecting beam portion on the corresponding
55
tion and the protecting beam portion on the correspond
side of said blade and being located at least at those points
ing side of said blade and being located at least at those
along the length of saidbl-ade at which said claw means
points along the length of said blade at which said claw
engage said blade by encompassing said supporting beam
means engage said blade by encompassing said supporting
means, said rear beam portion and each of said support
beam means, said rear beam portion and each of said
supporting beam means forming between themselves an 60 in g beam means forming between themselves an elongated
groove, and an elongated ?at reinforcement arranged in
elongated ‘groove- having an open outer side and an elon
each
of said grooves, the width of each reinforcement
gated ?at reinforcement arranged in eachof said grooves,
,being less than the depth of the groove
which it is
the width of each reinforcement being less than the depth
arranged whereby physical contact between said claw
of the groove within which it is arranged and each rein
forcement being at \least slightly spaced inwardly from the 65 means and said reinforcements is prevented, and said
blade being formed with abutment means arranged on
open side of the respective groove whereby physical con
said rear beam portion for engaging those end portions
tact between said claw means and said reinforcements is
prevented, and each groove and the respective reinforce
ment being shorter than said blade whereby the end por
‘of said holding members which are directed toward the 7
center of said blade so as to prevent movement of said
.
70 holding members toward said center.
tions of sad blade are free of said reinforcements.
5. In a windshield wiper, the combination which com
2. In a windshield wiper, the combination which com
prises an elongated wiper blade and holding means com
prises an elongated wiper blade and claw means for bold
prising two elongated holding members which are coex
tensive with the end portions of said blade, each of said
tion on each side of said blade, and supporting beam 75 holding members having claw means for holding said blade
ing said blade at spaced points along its length, said wiper
blade having a rear beam portion, a protective beam por
3,094,734
at a plurality of spaced points along its length, said wiper
which it is arranged whereby physical contact between
blade having a rear beam portion, a protective beam por
tiOn ‘on each side of said blade, and supporting beam
means on each side of said blade, said supporting beam
means being ‘arranged intermediate said rear beam por
tion and the protecting beam portion on the correspond
ing side of said blade and being located at least at those
points along the length of said blade at which said claw
means engage said blade by encompasisng said supporting
said ‘claw means and said reinforcements ‘is prevented, and
said ‘blade being provided with abutment means engaging
said holding members so as to prevent movements of the
5 holding members with respect to the blade.
beam means, said rear beam portion ‘and each of said sup 10
porting beam means ‘forming between themselves an elon
gated groove, and an elongated ?at reinforcement ar
ranged in each of said grooves, the width of each rein
forcement being less than the depth of the ‘groove within
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,741,791
2,782,443
2,861,289
2,907,065
2,925,615
Scinta ______________ _.. Apr. 17,
KnOhm ______________ __ Feb‘. 26,
Nesson _____________ __ Nov. 25,
Macp'herson ___________ __ Oct. 6,
Krohm ______________ _.- Feb. 23,
1956
1957
1958
11959
1960
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