U.S. patent application number 09/780855 was filed with the patent office on 2001-10-11 for high-pressure cleaning apparatus.
This patent application is currently assigned to Alfred Karcher GmbH & Co.. Invention is credited to Dirnberger, Sven, Grosser, Ralf, Kloepfer, Juergen.
Application Number | 20010028013 09/780855 |
Document ID | / |
Family ID | 7877669 |
Filed Date | 2001-10-11 |
United States Patent
Application |
20010028013 |
Kind Code |
A1 |
Dirnberger, Sven ; et
al. |
October 11, 2001 |
High-pressure cleaning apparatus
Abstract
In a high-pressure cleaning apparatus comprising a housing, a
drive unit and a winding device for winding and unwinding leads
which are led from stationary terminal connections to movable
terminal connections, in order to enable safe and simple winding
and unwinding of leads which lead away from the high-pressure
cleaning apparatus, it is proposed that the winding device comprise
a winding drum, that the winding drum comprise at least two
separate winding areas, that an electric connecting cable for
making a connection to a terminal connection which is stationary
relative to the winding device be windable in the one winding area,
that an electric connection cable for making a connection to a
terminal connection which is movable relative to the winding device
be windable in the other winding area, that an end of the
connecting cable on the drum and an end of the connection cable on
the drum form a direct connection point, that the connecting cable
form a loop, that the winding area of the connecting cable be
surrounded by a cable housing, in which also the loop has
sufficient space in each wind position of the winding device, and
that the other end of the connecting cable be led out of the cable
housing through a stationary part of the cable housing and be fixed
on the cable housing.
Inventors: |
Dirnberger, Sven; (Marbach,
DE) ; Grosser, Ralf; (Bopfingen, DE) ;
Kloepfer, Juergen; (Burgstetten, DE) |
Correspondence
Address: |
LAW OFFICE OF BARRY R LIPSITZ
755 MAIN STREET
MONROE
CT
06468
US
|
Assignee: |
Alfred Karcher GmbH &
Co.
Alfred-Karcher Strasse 28-40
Winnenden
DE
D-71364
|
Family ID: |
7877669 |
Appl. No.: |
09/780855 |
Filed: |
February 9, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
09780855 |
Feb 9, 2001 |
|
|
|
PCT/EP99/05718 |
Aug 7, 1999 |
|
|
|
Current U.S.
Class: |
242/378.2 ;
242/385 |
Current CPC
Class: |
B65H 75/4434 20130101;
H02G 11/02 20130101; B08B 3/026 20130101; B08B 2203/0276 20130101;
B65H 2701/34 20130101; B65H 75/4449 20130101; B65H 75/42
20130101 |
Class at
Publication: |
242/378.2 ;
242/385 |
International
Class: |
B65H 075/48 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 17, 1998 |
DE |
198 37 088.1 |
Claims
What is claimed is:
1. High-pressure cleaning apparatus comprising a housing, a drive
unit and a winding device (1) for winding and unwinding leads,
which are led from stationary terminal connections to movable
terminal connections, characterized in that the winding device (1)
comprises a winding drum (4, 5, 7, 13), in that the winding drum
(4, 5, 7, 13) comprises at least two separate winding areas (11,
16), which are only wide enough for single-layer cables to be
windable therein lying one above the other in layers, in that an
electric connecting cable (12) for making a connection to a
terminal connection which is stationary relative to the winding
device (1) is windable in the one winding area (11), in that an
electric connection cable (22) for making a connection to a
terminal connection which is movable relative to the winding device
(1) is windable in the other winding area (16), in that an end of
the connecting cable (12) on the drum and an end of the connection
cable (22) on the drum form a direct connection point, in that the
connecting cable (12) forms a loop (26), in that the winding area
(11) of the connecting cable (12) is surrounded by a cable housing
(2, 7, 9, 10), in which also the loop (26) has sufficient space in
each wind position of the winding device (1), and in that the other
end of the connecting cable (12) is led out of the cable housing
(2, 7, 9, 10) through a stationary part (24) of the cable housing
(2, 7, 9, 10) and is fixed on the cable housing (2, 7, 9, 10).
2. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the cable housing (2, 7, 9, 10) delimits the
winding area (11) of the connecting cable (12) in a radial
direction such that the loop (26) when unwound to a maximum extent
abuts on the radial delimitation (10) of the winding area (11).
3. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the winding drum (4, 5, 7, 13) has an
essentially radially symmetrical cross section.
4. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the cable housing (2, 7, 9, 10) has an
essentially radially symmetrical cross section.
5. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the winding drum (4, 5, 7, 13) is surrounded
essentially radially symmetrically by the cable housing (2, 7, 9,
10).
6. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the drum diameter of the winding area (16) of
the connection cable (22) is greater than the drum diameter of the
winding area (11) which accommodates the connecting cable (12).
7. High-pressure cleaning apparatus as defined in claim 2,
characterized in that the drum diameter of the winding area (16) of
the connection cable (22) is greater than the drum diameter of the
winding area (11) which accommodates the connecting cable (12).
8. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the cable housing (2, 7, 9, 10) is protected
against spray water.
9. High-pressure cleaning apparatus as defined in claim 2,
characterized in that the cable housing (2, 7, 9, 10) is protected
against spray water.
10. High-pressure cleaning apparatus as defined in claim 1,
characterized in that in an initial position, the connecting cable
(12) is wound in the same direction as the connection cable (22)
completely on the winding drum (4, 5, 7, 13), in a middle position
is completely unwound, whereby a maximum loop (26) is formed, and
upon further movement of the winding drum (4, 5, 7, 13) is wound on
again completely in the reverse winding direction with the loop
(26) being drawn in.
11. High-pressure cleaning apparatus as defined in claim 2,
characterized in that in an initial position, the connecting cable
(12) is wound in the same direction as the connection cable (22)
completely on the winding drum (4, 5, 7, 13), in a middle position
is completely unwound, whereby a maximum loop (26) is formed, and
upon further movement of the winding drum (4, 5, 7, 13) is wound on
again completely in the reverse winding direction with the loop
(26) being drawn in.
12. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the connecting cable (12) is approximately
half the length of the connection cable (22).
13. High-pressure cleaning apparatus as defined in claim 2,
characterized in that the connecting cable (12) is approximately
half the length of the connection cable (22).
14. High-pressure cleaning apparatus as defined in claim 10,
characterized in that the connecting cable (12) is approximately
half the length of the connection cable (22).
15. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the drum cross section of the winding area
(11) of the connecting cable (12) has a heart-shaped indentation
(23), and in that one end of the connecting cable (12) is led via
the indentation (23) to the connection point with the connection
cable (22).
16. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the connecting cable (12) is formed by a flat
ribbon cable.
17. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the connection cable (22) is formed by a
round cable.
18. High-pressure cleaning apparatus as defined in claim 16,
characterized in that the connection cable (22) is formed by a
round cable.
19. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the winding drum (4, 5, 7, 13) is adapted to
be held in the initial position relative to the housing (2) by a
clamping device (20, 21).
20. High-pressure cleaning apparatus as defined in claim 19,
characterized in that the clamping device is formed by a spiral
spring (21), one end of which is fixed on the winding drum (4, 5,
7, 13) and the other on the housing (2).
21. High-pressure cleaning apparatus as defined in claim 1,
characterized in that a reverse lock (25) is provided on the
winding drum (4, 5, 7, 13).
22. High-pressure cleaning apparatus as defined in claim 1,
characterized in that one end of the connecting cable (12) is
connected to the drive unit.
23. High-pressure cleaning apparatus as defined in claim 1,
characterized in that the cable housing (2, 7, 9, 10) is part of
the housing.
Description
[0001] The present disclosure relates to the subject matter
disclosed in international application PCT/EP99/05718 of Aug. 7,
1999, the entire specification of which is incorporated herein by
reference.
[0002] The invention relates to a high-pressure cleaning apparatus
comprising a housing, a drive unit and a winding device for winding
and unwinding leads which lead from stationary terminal connections
to movable terminal connections.
[0003] High-pressure cleaning apparatus usually comprise an
electrically operated high-pressure pump, which, for operation
purposes, has to be connected to a voltage supply unit. As a rule,
electric cables, for example, extension cables which connect the
high-pressure cleaning apparatus to an electric mains socket serve
this purpose. In many cases, a winding device is provided for
connection cables which are fixedly connected to the high-pressure
cleaning apparatus, and the winding device comprises projections in
the form of pins on the housing of the high-pressure cleaning
apparatus, around which the connection cable can be wound and
unwound. In high-pressure cleaning apparatus with such winding
devices it is disadvantageous that the connection cable has to be
wound and unwound again by hand in an awkward way, and that in the
wound state, the connection cable lies unprotected on the outer
housing.
[0004] Accordingly, the object of the present invention is to so
design a high-pressure cleaning apparatus of the generic kind that
leads which lead away from the high-pressure cleaning apparatus can
be easily and safely wound and unwound.
[0005] In accordance with the invention, this object is
accomplished in that the winding device comprises a winding drum,
that the winding drum comprises at least two separate winding
areas, that an electric connecting cable for making a connection to
a terminal connection which is stationary relative to the winding
device is windable in the one winding area, that an electric
connection cable for making a connection to a terminal connection
which is movable relative to the winding device is windable in the
other winding area, that an end of the connecting cable on the drum
and an end of the connection cable on the drum form a direct
connection point, that the connecting cable forms a loop, that the
winding area of the connecting cable is surrounded by a cable
housing in which also the loop has sufficient space in any wind
position of the winding device, and that the other end of the
connecting cable is led out of the cable housing through a
stationary part of the cable housing and is fixed on the cable
housing.
[0006] This design enables simple winding of the connection cable
onto and unwinding of the connection cable from the winding drum,
namely by the winding drum being rotated. The connection cable is
wound in the angular range provided therefor. Furthermore, this
design has the advantage that all slip ring contacts are dispensed
with. As a rule, these are provided when leads leading from
stationary terminal connections to movable terminal connections are
wound onto winding drums so as to prevent twisting of the leads.
The twisting of the leads can also be prevented without slip ring
contacts because instead of a slip ring contact, a connecting cable
fixedly connected on the drum to the connection cable and fixedly
arranged at its other end on the high-pressure cleaning apparatus
forms a loop.
[0007] Such winding devices for winding and unwinding leads leading
from stationary terminal connections to movable terminal
connections, for example, on a crane, are known per se, for
example, from DE 29 00 187 A1. During the winding and unwinding of
the connection cable, the loop of the connecting cable is
simultaneously wound onto and off a separate winding area of the
winding drum. The connecting cable does not become twisted, and,
therefore, slip ring contacts can be dispensed with.
[0008] A further advantage of the present invention is the
arrangement of the connecting cable in a housing. The housing
serves to protect the connecting cable against any outer
influences, for example, dirt and contact with fluids. In this way,
it is possible to arrange all electric connection points in the
housing of the high-pressure cleaning apparatus. The cable housing
also serves to spatially delimit the connecting cable during the
winding and unwinding, whereby safe and orderly winding and
unwinding of the connecting cable is simultaneously made
possible.
[0009] In a preferred embodiment of the invention provision is made
for the cable housing to so delimit the winding area of the
connecting cable in a radial direction that the loop when unwound
to a maximum extent abuts on the radial delimitation of the winding
area. When the connection cable is being unwound, the connecting
cable is simultaneously unwound with it. If the maximum extent of
the cable housing in a radial direction is limited, the connecting
cable unwinds from the winding drum and simultaneously winds onto
the inner circumferential wall of the cable housing surrounding the
winding area. In the present case, a minimum size of the cable
housing is thereby fixed. In this way, the winding device takes up
a minimum space.
[0010] In principle, provision may be made for the winding drum to
have an essentially radially symmetrical cross section. The cables
can be wound in a particularly simple and neat way onto winding
drums with a radially symmetrical, for example, round cross
section.
[0011] It is advantageous for the cable housing to have an
essentially radially symmetrical cross section. Since the
connecting cable is wound onto the inner circumferential wall of
the cable housing as the connecting cable unwinds from the winding
drum, a neat winding and unwinding are ensured when the cross
section of the cable housing is radially symmetrical, for example,
circular.
[0012] Provision is made in accordance with a preferred embodiment
for the winding drum to be surrounded essentially radially
symmetrically by the cable housing. In this way, a spacing between
the winding drum and the inner circumferential wall of the cable
housing is fixed, whereby the connecting cable can be wound and
unwound in a particularly neat and trouble-free way.
[0013] It is expedient for the drum diameter of the winding area of
the connection cable to be greater than the drum diameter of the
winding area which accommodates the connecting cable. The
structural size of the winding device can be additionally minimized
by a small drum diameter of the winding area of the connecting
cable.
[0014] It is particularly advantageous for the cable housing to be
protected against spray water. During operation of the
high-pressure cleaning apparatus, it is virtually unavoidable for
the apparatus to come into contact with spray water. In view of
this, electric components must be water-tight from the start, or at
least accommodated in a housing so as to be protected against spray
water. In the present invention there is an additional connection
point, namely between the connection cable and the connecting
cable. For this reason, a cable housing for the connecting cable,
which is protected against spray water, is desirable for
operational reliability.
[0015] In a preferred embodiment of the present invention provision
is made for the connecting cable to be wound in an initial position
in the same direction as the connection cable completely on the
winding drum, in a middle position to be completely unwound,
whereby a maximum loop is formed, and upon further movement of the
winding drum to be wound on again completely in the reverse winding
direction with the loop being drawn in. This results in the special
advantage that the connecting cable is shorter than the connection
cable. This reduces the costs for the connection cables and the
structural size of the winding device. The size of the loop is
additionally reduced by the shortening of the connecting cable,
whereby the winding and unwinding of the connecting cable can be
carried out in a way which is even less susceptible to
disturbance.
[0016] It is expedient for the connecting cable to be approximately
half as long as the connection cable. When the length of the
connecting cable is half that of the connection cable, both the
connecting cable and the cable housing are absolutely
minimized.
[0017] It is advantageous for the drum cross section of the winding
area of the connecting cable to have a heart-shaped indentation,
and for one end of the connecting cable to be led via the
indentation to the connection point with the connection cable.
Owing to the heart-shaped indentation, the connecting cable can be
led from the circumference of the drum of the winding area into the
center of the drum without snapping at any point. The heart-shaped
indentation offers the further advantage that with a reduced cable
length of the connecting cable, the connecting cable can be wound
in both winding directions in a kink-free way.
[0018] In principle, provision may be made for the connecting cable
to be formed by a flat ribbon cable. Flat ribbon cables can be
wound onto winding drums in a particularly neat and uniform way,
and, in addition, they minimize the radial extent of a wound-up
cable by way of their elongate cross section.
[0019] It is expedient for the connection cable to be formed by a
round cable. The connection cable can be drawn out of the winding
device to a voltage supply unit, and it is expedient for it to be
bendable equally well in all directions. This is the case with a
round cable.
[0020] In a particularly preferred embodiment of the invention,
provision may be made for the winding drum to be able to be held in
the initial position relative to the housing by a clamping device.
The clamping device makes it possible for the connection cable to
wind up again independently in the winding device when the pull on
the connection cable relaxes. This is particularly convenient and
always ensures that the connection cable is wound off with the
minimum required length.
[0021] It is expedient for the clamping device to be formed by a
spiral spring, one end of which is fixed on the winding drum and
the other on the housing. A spiral spring adapts particularly well
to the structural shape of the winding drum.
[0022] Furthermore, provision may be made for a reverse lock to be
provided on the winding drum. The reverse lock prevents the
connection cable from winding up again unintentionally. In this
way, the connection cable once it is unwound, remains unwound to
the desired length.
[0023] In principle, provision may be made for one end of the
connecting cable to be connected to the drive unit. The connecting
cable constitutes the extension of the connection cable, and,
therefore, both cables serve as connection between the drive unit
and the voltage supply unit.
[0024] It is particularly advantageous for the cable housing to be
part of the housing. In this way, a separate cable housing can be
dispensed with when it is directly integrated into the housing of
the high-pressure cleaning apparatus. This minimizes the material
requirements as well as the structural size of the winding
device.
[0025] The following description of a preferred embodiment of the
invention serves in conjunction with the drawings the purpose of
further explanation. The drawings show:
[0026] FIG. 1 a longitudinal section through a winding device
integrated into a high-pressure cleaning apparatus;
[0027] FIG. 2 a cross-sectional view along line 2-2 from FIG. 1
through the cable housing of the connecting cable in the wound-up
state of the connection cable;
[0028] FIG. 3 a cross-sectional view similar to FIG. 2, but with
the connecting cable completely unwound;
[0029] FIG. 4 a cross-sectional view similar to FIG. 2, but with
the connection cable completely unwound and the connecting cable
wound in the opposite direction.
[0030] A cable drum 1 of a high-pressure cleaning apparatus, not
shown in greater detail, is to be seen in FIG. 1. An inner drum
delimiting wall 2 arranged transversely to the axis of rotation DA
of the cable drum 1 comprises a cylinder-shaped projection, which
serves as drum bearing 3, and the axis of symmetry of which defines
the axis of rotation DA. On its side facing away from the drum
delimiting wall 2, the drum bearing 3 is surrounded in a positively
fitting manner by a cup-shaped drum hub 4 which is rotatable about
the axis of rotation DA relative to the drum bearing 3. In the
plane of the inner drum delimiting wall 2 there extends from the
drum hub 4 in a radial direction a circular-disk-shaped projection
which forms a hub disk 5. The inner drum delimiting wall 2 is
offset in the area of the radial extent of the hub disk 5 in the
direction of the axis of rotation away from the hub disk 5 in the
direction opposite to the cup-shaped opening of the drum hub 4 and
thereby forms a ring-shaped recess.
[0031] On the side of the hub disk 5 facing away from the recess
there is arranged on the hub disk 5 a circular-disk-shaped drum
inner disk 6, whose outer diameter is approximately twice the
diameter of the drum hub 4 and which is connected by a radial
sleeve-like circumferential wall 7 to the hub disk 5. The
circumferential wall 7 extends in the direction of the axis of
rotation away from the hub disk 5 beyond the drum inner disk 6 by a
distance which is approximately 1.5 times further than the distance
hub disk 5/drum inner disk 6. On the side of the circumferential
wall 7 facing away from the hub disk 5, the circumferential wall 7
comprises a radial circular-disk-shaped projection which forms a
delimiting disk 8 which extends parallel to the outer area of the
inner drum delimiting wall 2 and the hub disk 5. The delimiting
disk 8 extends in a radial direction from the drum hub 4 as far as
the inner drum delimiting wall 2.
[0032] Parallel to the delimiting disk 8 and to the inner drum
delimiting wall 2 there extends a partition wall 9 which on its
inner circumference facing the drum hub adjoins the circumferential
wall 7 seamlessly and almost over the entire area between drum
inner disk 6 and delimiting disk 8. Drum inner disk 6 and partition
wall 9 extend in the same plane.
[0033] In its radial outer area, the partition wall 9 comprises a
sleeve-like projection extending in the direction of the axis of
rotation towards the inner drum delimiting wall 2 over the entire
circumference and engaging under a similar projection of the inner
drum delimiting wall 2 projecting in the opposite direction. These
two projections form a radial wall 10 of a winding space 11 of a
flat ribbon cable 12, which is additionally delimited by the hub
disk 5, the outer area of the inner drum delimiting wall 2, the
partition wall 9 and the circumferential wall 7. The flat ribbon
cable 12 is wound in layers onto the essentially circular cross
section of the circumferential wall 7.
[0034] Furthermore, a drum outer disk 14 is arranged on the side of
the delimiting disk 8 facing away from the winding space 11 via a
sleeve-shaped ring 13 acting as spacer. The drum outer disk 14
extends parallel to the delimiting disk 8. A winding area 16 is
defined by the drum outer disk 14, the ring 13, the delimiting disk
8 and a projection of a shape similar to that of the radial wall
protruding in the direction opposite to the latter and forming a
housing edge 15. A stub 17 arranged eccentrically on the hub disk 5
serves to receive a likewise cylindrical connecting piece 18 which
protrudes from the delimiting disk 8 in the direction of the hub
disk 5 and expands in the form of a single step on its side facing
the drum outer disk 14 and serves to receive a pin 19 which is
joined to the drum outer disk 14 on its side facing the delimiting
disk 8. The axes of symmetry of stub 17, connecting piece 18 and
pin 19 extend parallel to the axis of rotation. The last-mentioned
parts can be adhered to one another or secured to one another by a
screw, not shown in greater detail.
[0035] A rotatably mounted supply roll 20 for a spiral spring 21 is
arranged on the inner drum delimiting wall 2 on its side facing
away from the winding space 11. One end of the spiral spring is
connected to the supply roll 20, the other end to the hub disk 5.
When rotated out of an initial position, the hub disk 5 is thereby
turned back into the initial position by the spring force of the
spiral spring 21 in a manner known to an expert in the field of
cable drums.
[0036] The cable drum 1 comprises a winding space 11 and a winding
area 16, whose radial inner delimitations are fixed relative to
each other and upon rotation of the hub disk 5 or the drum hub 4
are rotated in the same direction about the drum bearing 3. The
winding space 11 serves to receive the flat ribbon cable 12, the
winding area 16 to receive a round cable 22. The inside end of the
flat ribbon cable 12 is guided inwards via a heart-shaped
indentation 23 in the circumferential wall 7, which otherwise has
an essentially round cross section. Similarly, the inside end of
the round cable 22 is guided inwards at an opening, not
illustrated, in the ring 13 in the direction of the axis of
rotation. These two ends of the flat ribbon cable and the round
cable 22 are electrically conductively connected to each other,
insulated and fixed on the rotating parts of the cable drum 1 in a
manner not shown herein in further detail. The other end of the
flat ribbon cable 12 is guided at a point on the radial wall 10
through a passage 24 out of the winding space 11. The passage 24
simultaneously serves to fix the flat ribbon cable on the radial
wall 10.
[0037] A reverse lock generally designated by reference numeral 25,
which is arranged between the partition wall 9 and the delimiting
disk 8 rotatable relative thereto, prevents the cable drum 1 from
returning to the initial position against the spring force exerted
by the spiral spring 21 in a manner known to the expert in the
field of cable drums.
[0038] The procedure of unwinding and winding the connection cable
of the high-pressure cleaning apparatus in the form of a round
cable 22 is to be seen in FIGS. 2 to 4. In an initial position
shown in FIG. 2, the free end of the connection cable protrudes out
of the housing of the cable drum 1. The flat ribbon cable 12 is
completely wound on the circumferential wall 7 of the winding space
11. In the initial state, it is also possible for the outermost
winding layer of the flat ribbon cable 12 not to be wound closely
on the layers thereunder but for it to loosely surround these wound
layers lying thereunder. If the operator of the high-pressure
cleaning apparatus pulls the connection cable out of the cable drum
1, the flat ribbon cable 12 simultaneously unwinds. A more or less
loose loop 26 is formed. The unwound loop 26 is outwardly delimited
by the radial wall 10. The loop 26 reaches its maximum size when
the flat ribbon cable 12 is completely unwound from the
circumferential wall 7. This position referred to as middle unwound
position of the cable drum is shown in FIG. 3. If the connection
cable is unwound further, the movable parts of the cable drum 1
rotate further as a whole in the clockwise direction. However, upon
further rotation, the flat ribbon cable is then wound onto the
circumferential wall 7 in the counterclockwise direction. In an end
position, the connection cable is completely unwound, and the flat
ribbon cable 12 is wound on the circumferential wall 7 again
completely, but in the counterclockwise direction.
[0039] Each wind position of the cable drum 1 can be fixed by the
reverse lock 25. The spiral spring described hereinabove serves for
easier winding of the connection cable. The winding procedure takes
place in the reverse order to the unwinding procedure described
above.
[0040] The parts of the cable drum 1 surrounding the winding space
11 are arranged relative to one another and sealed off from one
another in such a way that the winding space 11 is protected from
spray water.
[0041] The cable drum 1 can be integrated as a whole in the housing
of a high-pressure cleaning apparatus. On the other hand, it is
possible for the inner drum delimiting wall 2 to be part of the
housing of the high-pressure cleaning apparatus, and parts of the
high-pressure cleaning apparatus can thereby also form parts of the
cable drum 1 at the same time.
* * * * *