U.S. patent number 3,738,027 [Application Number 05/184,108] was granted by the patent office on 1973-06-12 for closure device for shoes, especially for ski shoes.
This patent grant is currently assigned to Weimann Aktiengesellschaft. Invention is credited to Robert Schoch.
United States Patent |
3,738,027 |
Schoch |
June 12, 1973 |
CLOSURE DEVICE FOR SHOES, ESPECIALLY FOR SKI SHOES
Abstract
In a shoe having a pair of closure flaps, a closure device
comprising a pair of pull members coupled each to one of the
closure flaps at one end thereof, a central member comprising a
rotatably mounted disc at least partially formed as a maltese cross
having leg portions with recesses formed between adjacent leg
portions and groove means formed on the leg portions, a driving
member disposed adjacent the disc and having pins formed thereon,
the pins during rotation of the driving member engaging a
predetermined one of the groove means, a cam member on the driving
member having convexly shaped end portions for engagement with a
predetermined one of the recesses formed on the maltese cross
shaped disc and forming a latch therewith, the cam member having
concavely shaped side surfaces connecting the end surfaces for
allowing unimpeded passage of the end portions of the legs of the
disc during rotation of the disc by the pins, whereby a rotation of
the driving element causes the associated pins entering the groove
means and thereby rotating the disc, and as a result, the pull
members being displaced along a straight line closing or opening
the shoe flaps. The central member can be mounted on the shoe
tongue and the pull members can be cables.
Inventors: |
Schoch; Robert (Singen,
Hohentwiel, DT) |
Assignee: |
Weimann Aktiengesellschaft
(Schaffhausen, CH)
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Family
ID: |
27182881 |
Appl.
No.: |
05/184,108 |
Filed: |
September 27, 1971 |
Foreign Application Priority Data
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Sep 23, 1970 [DT] |
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P 20 46 890.0 |
Feb 9, 1971 [DT] |
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P 21 06 021.9 |
Jun 5, 1971 [DT] |
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P 21 28 061.5 |
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Current U.S.
Class: |
36/50.1; 24/68R;
36/50.5 |
Current CPC
Class: |
A43B
1/0054 (20130101); A43C 11/16 (20130101); A43C
11/165 (20130101); Y10T 24/21 (20150115) |
Current International
Class: |
A43C
11/16 (20060101); A43C 11/00 (20060101); A43b
011/00 () |
Field of
Search: |
;36/50,2.5AL
;24/68R,68SK |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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196,751 |
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Mar 1958 |
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OE |
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263,577 |
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Jul 1968 |
|
OE |
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1,816,811 |
|
Jun 1970 |
|
DT |
|
Primary Examiner: Guest; Alfred R.
Claims
Having thus described the invention, what I claim as new and desire
to be secured by Letters Patent, is as follows:
1. In a shoe having a pair of closure flaps, a closure device
comprising a pair of pull members coupled each to one of said
closure flaps at one end thereof, a central member comprising a
rotatably mounted disc means, means coupling said pull members to
said disc in a manner that rotation of said disc causes a
longitudinal displacement of each of said pull members, said disc
means being at least partially formed as a maltese cross having leg
portions with recesses formed between adjacent leg portions and
groove means formed in said leg portions, a driving member disposed
adjacent said disc means and having pin means formed thereon, said
driving member being mounted for rotation, said pin means during
rotation of said driving member engaging a predetermined one of
said groove means, a cam member on said driving member, said cam
member having convexly shaped end portions for engagement with a
predetermined one of said recess means formed on said maltese cross
shaped disc and forming a latch means therewith in a rest or
intermediate position of said closure device, said cam member
having concavely shaped side surfaces connecting said end surfaces
for allowing unimpeded passage of the end portions of said legs of
said disc means during rotation of said disc means by said pin
means, whereby a rotation of said driving element causes the
associated pin means entering said groove means and thereby
rotating said disc means, and as a result, said pull members being
displaced along a straight line.
2. The combination as claimed in claim 1, wherein said coupling
means comprises a pair of connecting strap means each journaled on
said disc means, said coupling strap means being journaled in
recesses formed in said pull members and during rotation of said
disc means moving said pull members along a straight line in the
opposite direction.
3. The combination as claimed in claim 1, wherein retaining means
are provided on each of said shoe flaps for releasably engaging
each of said pull members, said central closure device being
mounted at the free end of the shoe tongue, means coupling said
shoe tongue to the shoe upper in a hinged fashion for permitting
said shoe tongue moving inwardly and outwardly.
4. The combination as claimed in claim 3, wherein said coupling
means for said tongue is placed at a point on said shoe where the
separation of said closure flaps begins.
5. The combination as claimed in claim 3, wherein the free ends of
said pull members are provided with a hook shaped portion to
cooperate with hook shaped portions provided on said retaining
means.
6. The combination as claimed in claim 3, wherein a sealing bellows
is provided on each side of said tiltable tongue for preventing
entry of snow or water into the shoe.
7. The combination as claimed in claim 3, wherein said means
securing said tongue to said shoe are hinge means.
8. The combination as claimed in claim 3, wherein said retaining
means comprise a resilient material.
9. The combination as claimed in claim 3, further including means
for retaining said tongue of said shoe in an inwardly flapped
position even at an open position of said closure device.
10. The combination as claimed in claim 3, wherein said closure
device is secured to said tongue by means of snapping means.
11. The combination as claimed in claim 3, wherein said pull
members comprise cable means including a pair of pull cable means
each having a free end provided with nipple means.
12. The combination as claimed in claim 11, wherein said cable
means is coupled to said disc means by lug means.
13. The combination as claimed in claim 11, wherein said retaining
means are shaped for cooperation with said nipple means.
14. The combination as claimed in claim 1, wherein said pull
members comprise a pull cable means.
15. The combination as claimed in claim 14, wherein said cable
means is a single piece cable, a roller means axially coupled with
said disc means for taking up or reeling off said cable during
rotation of said disc means.
16. A closure device for a shoe having a pair of closure flaps,
said closure device comprising a pair of pull members coupled each
to one of said closure flaps at one end thereof, a central member
conprising a rotatably mounted disc means, means coupling said pull
members to said disc in a manner that rotation of said disc causes
a longitudinal displacement of each of said pull members, said disc
means being at least partially formed as a maltese cross having leg
portions with recesses formed between adjacent leg portions and
groove means formed in said leg portions, a driving member disposed
adjacent said disc means and having pin means formed thereon, said
driving member being mounted for rotation, said pin means during
rotation of said driving member engaging a predetermined one of
said groove means, a cam member on said driving member, said cam
member having convexly shaped end portions for engagement with a
predetermined one of said recess means formed on said maltese cross
shaped disc and forming a latch means therewith in a rest or
intermediate position of said closure device, said cam member
having concavely shaped side surfaces connected to said end
surfaces for allowing unimpeded passage of the end portions of said
legs of said disc during rotation of said disc by said pin means,
whereby a rotation of said driving element causes the associated
pin means entering said groove means and thereby rotating said disc
means, and as a result, said pull members being displaced along a
straight line.
Description
FIELD AND BACKGROUND OF THE INVENTION
The present invention relates to a closure device for shoes,
especially for ski shoes, in which on the edge portions of the
closure flap of the shoe which are to be pulled together, pull
members or straps are secured and such pull members are jointedly
coupled with a rotatably mounted disc lying between the straps,
such coupling being in an off-centered fashion and in such a manner
that during the rotation of the disc the pull straps are either
pulled in or pushed outwardly.
SUMMARY OF THE INVENTION
A shoe closure means according to the present invention is
characterized in that the above-mentioned rotatably mounted disc at
least in portions is formed as a maltese cross and that the pull
members or straps are coupled with the disc by connecting straps
and wherein on the leg portions of the maltese cross radial guide
groove means are provided into which pin means disposed in an
off-center fashion on a driving member are adapted to enter; such
driving member being rotatably mounted in a plane parallel with
respect to the plane of the disc, and when rotated, the pins
operatively engage the groove means; the driving member including a
pair of pin means and a cam member having a pair of convexly shaped
front or end surfaces which, during the rotation of the driving
member, alternately engage recess means formed on the maltese cross
with a radius similar to those of the convex end portions of the
cam member and being retained therein to form a latch means
together with such recess means and define a rest position of the
closure device thereby.
The disc which is formed as a maltese cross is preferably a
circular disc with two leg portions, and consequently it has three
recess means formed thereon which, in turn, allow for three rest or
intermediate positions of the pull member as hereinafter described.
If two leg portions are formed on the maltese cross with a
displacement of 60.degree. with respect to each other, then the
disc has also two guide grooves formed thereon for engagement with
the pin means of the driving member.
As in the embodiment broadly described above the driving member has
a round disc and only a single pin means formed thereon, then in
order to arrive from one of the three rest positions of the closure
means to another rest position thereof, there will be necessary a
full rotation of the driving member. In the case of a pair of pin
means it is sufficient that a rotation of 180.degree. takes place
between adjacent rest or latch position. The driving member
preferably is provided with a pair of pin means which are lying
opposite each other.
It is within the scope of the present invention to provide a
plurality of rest or latch positions, such as four or more, wherein
the disc should have three or more leg portions and accordingly the
same number of guide grooves thereon; however, such disc may
require an enlarged shape which may not be desirable for every
condition.
The camming member between its two convex end or front surfaces has
concave side surfaces on each side connecting the front surfaces
which, during the rotation of the disc, allow entry of the sharp
end corners of the leg portions of the maltese cross and an
unimpeded passing of them over such concave surfaces.
According to the present invention the closure device is placed in
a housing.
In another aspect of the present invention the shoe closure device
is characterized in that the pull members or straps are secured on
the edge portions of the closure flaps of the shoe by means of
retaining devices in a releasable fashion, and that the center
closure member is secured at one end of a tiltable toungue which,
in turn, at the other end thereof is secured in the region of the
upper of the shoe where the separation of the closure flaps of the
shoe begins.
The latter embodiment of the ski shoe closure device according to
the present invention has the advantage that a skier can close or
open his shoe by means of an individual or single closure member.
During the putting on of the shoe he puts his foot into the shoe
while the tongue of the shoe is tilted forwardly, the closure flaps
of the shoe are pulled apart and the center closure element of the
closure device is open; then he flips the tongue back into its
position, whereupon the pull straps or members of the closure
device will engage the retaining devices or portions provided on
the edge portions of the closure flaps, and then he pulls together
the pull members or straps of the closure device by operating the
center closure element of the closure device. During the taking off
of the shoe the above described operational steps are performed in
the opposite direction. In the event that the center closure
element of the device is provided with three rest positions, the
shoe can be latched in an intermediate position of the closure
element in such a manner as the skier may desire, for example, for
the downhill skiing. In this intermediate position the pull members
or straps remain still in engagement with the retaining portions on
the edges of the shoe flaps. The same holds true also for the
center closure element having four rest positions.
The retaining or securing members of the flap of the shoe can be
provided, for example, with a button means which enters into an
opening on the free or unsecured end of the pull members or straps
and becomes secured to the pull members or straps in this manner.
It is also possible and within the scope of the present invention
that the retaining or securing members are provided with two or
more button means. In accordance with a very advantageous
embodiment according to the present invention, the free or
unsecured ends of the pull members or straps are formed in a hook
shape and cooperate with the appropriately formed, that is,
hook-shaped retaining or securing members on the flaps. It can be
advantageous to shape the retaining or securing members resiliently
in the pulling direction by means of a metallic spring or a
rubber-like resilient element.
The shoe tongue can be made of leather, synthetic material or
metal. In the latter case it is preferably provided with a hinge
means. Even if the tongue is made of leather or synthetic material,
it still can be provided by a hinge means. It is also within the
scope of the present invention to provide that if the tongue is
made of metal, it is preferably covered with leather or with a
synthetic material or similar material.
In order to prevent snow or water getting into the shoe in the
event that the shoe flaps are not overlapping each other or if they
overlap each other only partially, the forwardly tiltable toungue
should be provided on each side thereof with a bellows-like sealing
flap which can be extended or returned to a compressed state with
the flapping or closing of the shoe tongue.
According to still a further aspect of the present invention, the
pull members or straps and the connecting rod-like coupling element
are replaced by a pull cable.
According to this last-mentioned aspect of the present invention,
the securing or retaining member on the flaps of the shoe can be
provided with a button which can enter into a lug means provided on
the free or unsecured end of the pull cable and thereby be coupled
with the pull cable. According to a very advantageous embodiment of
this aspect of the present invention, the free ends of the pull
cable are fixedly coupled with a nipple and cooperate with
appropriately shaped retaining members. It is also within the scope
of the present invention with respect to this embodiment that the
retaining members in the pull direction can be made resilient by
means of a metallic spring or by means of a rubber-like resilient
element.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will become more readily apparent from the following
description of preferred embodiments thereof shown in the
accompanying drawings, in which:
FIG. 1 is a top view in open position of one embodiment of the
present invention;
FIG. 2 is a view in the direction of the arrow A in FIG. 1;
FIG. 3 is a view of the closure device without cover when viewed in
the direction of the arrow B of FIG. 2;
FIG. 4 is a sectional view along the line C--C of FIG. 3;
FIG. 5 is a top view in the closed position;
FIG. 6 is a view in the direction of the arrow B of FIG. 5;
FIG. 7 is a view in the direction of the arrow E of FIG. 6;
FIG. 8 is a similar view as illustrated in FIG. 7, however, without
cover;
FIG. 9 illustrates another embodiment of the present invention in
top view and in closed position;
FIG. 10 is a view in the direction of the arrow A in FIG. 9;
FIG. 11 is a sectional view along the line B--B of FIG. 9 with the
tongue tilted forward;
FIG. 12 is a section along the line C--C of FIG. 11;
FIG. 13 is a top view of the closure element according to another
embodiment of the present invention, in open position;
FIG. 14 is a top view of the closure element in closed
position;
FIG. 15 is a back view of the closure element similar to FIGS. 13
and 14 with the cover removed and in open position;
FIG. 16 is a back view of the closure element similar to FIGS.
13-15 with the cover removed and in closed position;
FIG. 17 is a sectional view along the line A--A in FIG. 15 with the
cover replaced;
FIG. 18 is a back view of the closure element in open position with
the cover removed;
FIG. 19 is a back view of the closure element in closed position
with the cover removed; and
FIG. 20 is a sectional view along the line B--B of FIG. 18 with the
cover replaced.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to FIGS. 1-8, it is seen that a pair of pull members
or straps 10 are secured at one end thereof, each to the respective
closure flap 11 of the shoe by means of rivets 12 and at their
other ends are coupled by means of connecting rod-like coupling
elements 13 with a disc 14. Between the closure flaps 11 of the
shoe there is the tongue 15. Each of the coupling elements 13 has a
partially circular end portion 16 which is journaled in a
correspondingly partially circular recess 17 of the associated pull
member 10 and can be rotated in the recess about a wide angle. The
other end 18 of each coupling element 13 is rotatably journaled
about an axle 19 of the disc 14 so that during a rotation of the
disc 14 about a shaft butt 20 the pull members or straps 10 are
either pulled together or pushed outwardly. One-half of the
circular disc 14 is formed as a maltese cross. It has two cross
legs 21, 22, a pair of guide grooves 23, 24 and three recesses 25,
26 and 27. The disc 14 is coupled with a driving element 28 having
a pair of pins 29, 30 and a camming member 31 thereon. The driving
element 28 which has the shape of a circular disc is rotatably
journaled about a shaft butt 32 in a housing 33. The pull members
or straps 10 are guided within the housing 33 and both discs 14 and
28, as can be seen in the drawings, are journaled about their shaft
butts 20 and 32, respectively. In order to attain a good sliding
journalling, a synthetic material bearing 34 for the shaft butt 20
and a bearing 25 of similar material for the shaft butt 32 is
provided. The shaft butts 20 and 32 are fixedly coupled with the
disc with which they are associated, namely, with discs 14 and 28,
respectively, and as preferred, in an integral fashion therewith.
The shaft butt 32 is fixedly secured with a square shaped stud 36
and with a cylindrical pin 37. On the square shaped stud 36 and on
the pin 37 an operating handle 38 is secured by being riveted
thereto.
The grooves 23 and 24 formed on the leg portion of the maltese
cross shaped disc 14 can be also in the form of open slots.
The housing 33 can be covered with a cover 40 which is then riveted
thereto.
By rotating the driving element 28, which is illustrated in FIG. 3
in a rest position with the closure device open, into a
counter-clockwise direction, the pin 29 engages, or enters into,
the guide groove 23 of the disc 14 and causes thereby a rotation of
the disc 14 into the clockwise direction. The camming member 31 is
provided with a pair of cam surfaces 41 which are convexly shaped
and which, in the rest position, serve as a latch means. Such
convex end surfaces 41 during rotation of the disc 28 leave the
recess 25 of the disc 14 by sliding out of it. By a rotation of the
driving element 28 amounting to 180.degree., the disc 14 having the
maltese cross shape undergoes a rotation of 60.degree.. The pin 30
assumes now the position of the pin 29 which the latter had in FIG.
3, and the convex front surface 42 of the cam member 31 lies now in
the recess 26 of the disc 14 so that the cam 31 serves again as a
latching means in this intermediate rest position. As a result it
is, therefore, impossible to move the pull members or straps 10
either by longitudinally pulling on them or pusing them. By
rotating the disc 14 for 60.degree. the pull members 10 have been
pulled together to an intermediate position which might be a
desirable position for the skier during downhill skiing in order to
loosen up the ski shoes. The attained intermediate position of the
closure device can be transferred into a further closed or into an
open position of the closure device by rotating the operating
handle 38.
By further rotating the driving element 28 in the counter-clockwise
direction, the pin 30 engages the guide groove 24 and thereby
causes a further rotation of the disc 14 in the clockwise
direction. The convex end surface 42 leaves now the recess 26 of
the disc 14 by sliding out of it. After this new rotation of the
driving element 28 by 180.degree. it has with its maltese cross
shape undergone a further rotation of 60.degree. and the closure
device assumes the position illustrated in FIG. 8, which is the
closed position. The pin 29 is now again to the right, as seen in
FIG. 8, and the convex end surface 41 of the cam member 31 abuts
against the recess 27. Both connecting rod-like coupling elements
13 lie now parallel with respect to each other. Their end portions
18 find a rest position in the recesses 43 formed in each of the
pull traps 10.
As seen more particularly in FIGS. 1 and 5, each of the rest
positions, that is in addition to the initial position 1, the
following intermediate positions of the closure device associated
with a particular latching position of the cam member 31 with
respect to one of the recesses on the disc 14, may be numbered and
such numbers associated with each of the positions may appear in a
window cut in the cover of the closure device, as particularly seen
in FIGS. 1 and 5.
With reference to FIGS. 9-12 illustrating another embodiment of the
present invention, the central closure element 110 has a
construction similar to the central closure element described in
connection with FIGS. 1-8 and for the sake of clarity will not be
repeated here. By rotating the operating handle 111, the pull
members or straps 112 are here at their free or unsecured ends
provided with a hook-shaped member 113 each of which is to
cooperate by correspondingly hook-shaped securing or retaining
elements 114 which, in turn, are secured on the closure flaps 115
and 116 of the shoe by means of rivets 117. The retaining or
securing elements 114 each has an extension pointing toward the tip
of the shoe which provides for a better pulling together of the
shoe closure flaps 115 and 116.
The central closure element 110, as indicated at points 119, is
riveted to the free end of a shoe tongue 118 which in the
illustrated embodiment is shown to be made of metal. The other end
of the tongue 118 is coupled with the shoe upper 122 in a tiltable
fashion by means of a hinge device 120 and a metallic plate
121.
As seen in FIG. 10 at the location 123, the closure flaps 115 and
116 of the shoe are overlapping each other in a closed position. At
124 the shoe is indicated with its closure flaps 125 under the
tongue 118 covering each other although the closure device may be
open.
The metal tongue 118 of the shoe is provided by an intermediate
layer 126, such as a synthetic material layer having a coating 127
thereon which, on both sides of the tongue 118, is formed into the
shape of an accordion or bellows 128; and the free longitudinal
edge portions of which are connected with the shoe upper 122 and
also with the closure flaps 115 and 116 to form a water tight
connection in order to prevent entry of snow or water into the
shoe. It is obvious that the coating 127 can be put directly onto
the metal tongue 118 and the intermediate layer 126 can be
omitted.
By using permanent magnets, pressure devices or other type of
arrangement, the tongue 118 may remain in its inwardly flapped
position even when the closure device 110 is open.
With reference to FIGS. 13-17 it is noted that the central closure
element 210 has a construction which is the same as the central
closure element described in connection with FIGS. 1-8; therefore,
the details of such construction will not be repeated here for the
sake of clarity of the description. By rotating the operating
handle 211, the pull cables 212, which in this embodiment of the
invention replace the pull members or straps described in
connection with FIGS. 1-8, are pulled together or pushed apart. In
this embodiment the pull cables 212 are provided at their free ends
with a nipple 213 each, which are to cooperate by correspondingly
shaped retaining or securing members 214 on each side. The securing
members 214 are secured to the closure flaps 215 and 216 of the
shoe by means of rivets.
The central closure element 210 is secured to the free end of the
shoe tongue 217 by being snapped on it or by similar retaining
devices, while the other end of the tongue 217 is coupled with the
shoe upper in a tiltable fashion so that the tongue 217 can be
tilted forward or inward. At their upper ends the closure flaps 215
and 216 of the shoe overlap each other in the closed position.
The housing 218 (which is identified by the reference numeral 33 in
FIGS. 1-8) is provided, in contrast to the bore shown in FIGS. 1-8,
with a rotatable pin 219 about which a disc 220 (the similar disc
is identified by the reference numeral 14 in FIGS. 1-8) is
rotatable by means of a spacing sleeve 221 and by means of
upsetting the rotatable pin 219. An insert 222 made from nylon
(Registered Trade Mark) makes it easier to perform the sliding
movement. In addition the disc 220 is provided with guiding grooves
223 for the cables 212. Instead of the rod-like connecting element
13 provided in the embodiment described in FIGS. 1-8, the pull
cables 212 are jointed to the axle 225 (corresponding to the part
19 in FIGS. 1-8) by means of nipple lugs 224. The housing 218 and
the cover 226 are, in contrast to the corresponding parts of FIGS.
1-8, circular.
With reference to FIGS. 18-20 which illustrate a still further
embodiment of the present invention which is similar to the one
shown in FIGS. 13-17 and employs the pull cable again. It is noted
here also that the central closure element identified by the
reference numeral 210 is similar in construction to the central
closure element illustrated in FIGS. 1-8 and its detailed
construction will not be repeated here for the sake of clarity. As
follows from the description of the embodiment illustrated in FIGS.
13-17, the closing of the closure element 210 is performed by means
of a cable on each side. The cable identified here by 227 is made
as a single cable having at its mid portion a cylindrical nipple
228 welded or soldered thereto. In contrast to the embodiment
illustrated in FIGS. 13-17, the disc 229 (corresponding to the disc
14 in FIGS. 1-8) is in the axial direction integrally formed with a
cable roller 230 and in the bore 231 of which the nipple 228 is
inserted. Both arms of the cable 227 lie in opposite recesses 232
of the cable roller 230. The insert 233 which is made of nylon has
guide grooves 234 formed therein provided for both cable arms 227.
By rotating the operating knob or handle 211, the disc 229 and
thereby the cable roller 230 will also be rotated, whereby
depending from the direction of rotation, the cable is either
reeled up or off. In accordance with the present embodiment a
longer pull can be attained here than with the embodiment
illustrated in FIGS. 13-17. This is aided also by the fact that the
number of the recesses of the maltese cross here have been
increased. On both ends of the cable 227 nipples 235 are welded or
soldered thereto or fixedly connected therewith and engage
correspondingly formed retaining devices 214 similarly as the ones
described in connection with the embodiment illustrated in FIGS.
13-17.
The pull members 10 and the disc 14 can be made, for example, from
hot pressed brass or steel. The connecting elements 13 can be made
from sheet metal by punching. The housing 33, the disc 28 and the
operating handle 38 are preferably made from an aluminum alloy in a
hot pressing process. The cover 40 can be made from anodized
aluminum sheet, or from brass or steel or even from a synthetic
material.
From the above, it is apparent that although the invention has been
described hereinbefore with respect to certain specific embodiments
thereof, it is evident that many modifications and changes may be
made without departing from the spirit of the invention.
Accordingly, by the appended claims, I intend to cover all such
modifications and changes as fall within the true spirit and scope
of this invention.
* * * * *