EXHIBIT 3

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Date: June 6, 2024

To whom it may concern:

This is to certify that the attached translation is an accurate representation of the documents received by 

this office. The translation was completed from:

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To:

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The documents are designated as:

• September 24 2012 Swiss Filings

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Swiss Confederation Federal Institute of Intellectual Property

Certification

The attached files correspond to the original technical documents of the patent application 

designated on the next page for Switzerland and Liechtenstein. Switzerland and the Principality 

of Liechtenstein form a single territory of protection. Therefore, protection can only be applied 

for jointly for both countries.

Bern, May 2, 2014

AdministrationPatente 

[signed]

Jean-Claude Cristiani 

[seal:]

Swiss Federal Institute of Intellectual 

Property

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[illegible stamp]

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Certificate of Filing of Patent Application No. 01724/12 (Art. 46b (1) of the 

Swiss Patent Regulation [Patentverordnung – PatV])

The Swiss Federal Institute of Intellectual Property hereby certifies receipt of the 

Swiss patent application specified below.

Title:

Strapping device with a tensioning wheel arranged on a pivotable rocker.

Patent Applicant:

ILLINOIS TOOL WORKS INC.

3600 West Lake Avenue

Glenview, Illinois 60026

United States of America

Attorneys at Law:

Patentanwälte Klein & Klein

Grienbachstrasse 17

6300 Zug

[Switzerland]

Filing date: 09/24/2012

Expected classes: B65B

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1

[stamp:] Unchangeable copy [stamp:] 1 7 2 4 / 1 2

Strapping device with a tensioning wheel arranged on a pivotable rocker

The invention relates to a mobile strapping device for strapping packaged goods with a 

strapping band, which has a tensioning device for applying a strap tension to a loop of a 

strapping band, the tensioning device being provided with a tensioning wheel which can 

be driven in rotation by a motor about a tensioning axis and is intended for engaging in 

the strapping band, and the tensioning wheel being arranged on a rocker which can be 

pivoted by a motor about a rocker axis, in order to pivot the tensioning wheel towards or 

away from a tensioning plate, and a welding device for producing a welded joint, in 

particular a friction welded joint, on two superimposed regions of the loop of the strapping 

band by means of a welding element which is provided for locally heating the strapping 

band and is provided with a rechargeable energy store for storing electrical energy which 

can be released as drive energy for motorized drive movements at least for the welding 

device for producing a welded joint.

Such mobile strapping devices are used for strapping packaged goods with a plastic 

strap. For this purpose, a loop of the respective plastic strap is placed around the 

packaged goods. The plastic strap is usually drawn from a supply roll. When the loop is 

completely wrapped around the packaged goods, the end portion of the strap overlaps 

with a portion of the strap loop. The strapping device is then applied to this two-layer 

portion of the strap, the strap is clamped in the strapping device, a strap tension is applied 

to the strap loop by means of the tensioning device, and a seal is created by friction 

welding the loop between the two layers of strap. This is done by pressing the strap in the 

area of the two ends of the strap loop with an oscillating friction shoe. The pressure and 

heat generated by the motion causes the strap, which is usually made of plastic, to melt 

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2

locally for a short period of time. This creates a permanent bond between the two layers 

of strap that can only be broken with great force. The loop is then separated from the 

supply roll. The packaged goods are strapped.

Generic strapping devices are intended for mobile use, where the tools are carried by a 

user to the point of use and should not be dependent on the use of external power. The 

energy required for the intended use of such strapping tools to tension a strapping band 

around any packaged goods and to create a seal is usually provided by an electric battery 

or compressed air in the case of previously known strapping tools. This energy is used to 

generate the strap tension applied to the strap by the tensioning device and to create a 

seal on the strapping band. Generic strapping devices are also designed to join only 

weldable plastic straps.

For mobile tools, light weight is particularly important to minimize the physical strain on 

the strapping operator when using the device. For ergonomic reasons, the weight should 

also be distributed as evenly as possible over the entire strapping device, in particular to 

avoid concentrating the weight in the head area of the strapping device. Such a 

concentration leads to unfavorable handling characteristics of the device. In addition, the 

aim is always to make the handling of the strapping tool as ergonomic and user-friendly 

as possible. In particular, the possibility of operating errors and malfunctions should be 

minimized.

With generic strapping devices, another aspect of functional reliability is to ensure that 

there is little or no slippage between the tensioning wheel and the tensioning wheel, even 

at higher strap tensions. On the one hand, slippage can prevent the strap from reaching 

the desired strap tension levels. Slippage can also cause the tensioning process, and 

therefore the entire strapping process, to take longer. Slippage also leads to a reduction 

in the number of straps that can be strapped with one battery charge, due to the longer 

operating time of the respective strapping tool per strapping cycle, and thus the amount 

of energy required for each strapping cycle. Ultimately, slippage also means that the 

required strap tension level may not be achieved and the strap may not be sufficiently 

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3

tensioned, which can be a safety hazard. In order to avoid or at least reduce slippage, the 

tensioning wheel is usually toothed and pressed against the tensioning plate with a 

pressure force. In known solutions, the pressure force can be provided by a spring that 

presses the rocker with the tensioning wheel arranged thereon against the strap and the 

tensioning plate underneath. However, this solution is particularly unsatisfactory when 

higher strap tensions are to be generated, since—as has been shown—slippage during 

the tensioning process cannot be prevented with sufficient reliability.

The invention is therefore based on the task of creating a generic mobile strapping tool 

of the type mentioned at the beginning with high functional reliability, with which strapping

can be carried out with as little slippage as possible.

In a mobile strapping device of the type mentioned at the beginning, this task is solved 

according to the invention in that, at least temporarily during the transmission of the 

motorized drive movement to the tensioning wheel, preferably as long as the tensioning 

wheel is in engagement with the strap, the motorized drive movement is also used to 

increase a contact pressure of the tensioning wheel in the direction of the tensioning plate 

by means of a pivoting movement of the rocker driven by the motor. Thus, the invention 

provides a variable pressure of the tensioning wheel on the strapping band depending on 

the strap tension.

The invention thus utilizes the strap tension created by the tensioning process to 

advantageously also increase the pressure of the tensioning wheel on the strap as the 

strap tension steadily increases, thereby counteracting the risk of the tensioning wheel 

“sliding through” or slipping during the tensioning process, which itself also increases as 

the strap tension increases. As the strap tension increases, the contact pressure of the 

tensioning wheel on the strap and the tensioning plate also increases.

In a particularly preferred embodiment of the invention, which also has independent 

significance, motorized drive movements with identical directions of rotation of the only 

one motor can also be used to lift the rocker in addition to driving the tensioning wheel 

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4

when tensioning the strapping band. In addition, the same drive movement can also be 

used to apply variable pressure to the tensioning wheel on the strap to be tensioned, 

depending on the tension of the strap. The dependency is designed so that the contact 

pressure exerted by the tensioning wheel on the strap increases as the strap tension 

increases. Since the risk of slippage between the tensioning wheel and the strap

increases with increasing strap tension, the risk of slippage can be counteracted by 

increasing the contact pressure. It is particularly desirable to use the same direction of 

motor rotation as for tensioning. The motorized drive movement when tensioning the strap 

can preferably be used in such a way that during the tensioning process of the strapping 

band, a counterforce acting on the tensioning wheel from the strapping band is used by 

means of the tensioning wheel engaging in the strapping band and rotating against a 

strap tension in order to increase the contact pressure of the tensioning wheel in the 

direction of the tensioning plate.

Other preferred embodiments of the invention are set forth in the claims, description, and 

drawings.

The invention will be more fully explained by reference to the purely schematic 

embodiments shown in the figures:

Fig. 1 A strapping device according to the invention in perspective view;

Fig. 2 The tensioning device and the welding device of the strapping device of 

Fig. 1 together with the motor;

Fig. 3 An exploded view of the tensioning device of Fig. 2.

The strapping tool 1 according to the invention shown in Figs. 1 and 2, which is exclusively 

manually operated, has a housing 2 which surrounds the strapping tool mechanism and 

on which a handle 3 for handling the device is formed. The strapping tool is also provided 

with a base plate 4, the underside of which is intended for positioning on an object to be 

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packaged. All functional units of the strapping tool 1 are attached to the base plate 4 and 

to the carrier of the strapping tool, which is not shown in detail and is connected to the 

base plate.

The strapping tool 1 can be used to tension a loop of plastic strap B (not shown in detail 

in Fig. 1, for example made of polypropylene (PP) or polyester (PET)), which has 

previously been placed around the object to be packaged, by means of a tensioning 

device 6 of the strapping tool. For this purpose, the tensioning device has a tensioning 

wheel 7 with which the strap B can be gripped for a tensioning operation. The tensioning 

wheel 7 is arranged on a pivoting rocker 8 which can be pivoted about a rocker pivot axis 

8a. The tensioning wheel 7, which is arranged with its axis of rotation at a distance from 

the rocker pivot axis 8a, can be transferred from an end position at a distance from a 

preferably curved tensioning plate 9 attached to the base plate 4 into a second end 

position in which the tensioning wheel 7 is pressed against the tensioning plate 9 by a 

pivoting movement of the rocker 8 about the rocker pivot axis 8a. By means of a 

corresponding motorized drive movement in the opposite direction of rotation, the 

tensioning wheel 7 can be removed from the tensioning plate 9 and pivoted back into its 

initial position, whereby the strap located between the tensioning wheel 7 and the 

tensioning plate 9 is released for removal.

When the tensioning device is in use, one layer of the strapping band is located between 

the tensioning wheel 7 and the tensioning plate and is pressed against the tensioning 

plate by the tensioning wheel 7. By rotating the tensioning wheel 7, the strap loop can 

then be provided with a sufficiently high strap tension for the packaging purpose. The 

tensioning process and the advantageously designed tensioning device and rocker 8 are 

explained in more detail below.

Subsequently, at a point on the strap loop where two layers of strap lie on top of each 

other, the two layers can be welded together in a manner known per se by means of the 

friction welding device 12 of the strapping tool. The strap loop can thus be permanently 

sealed. For this purpose, the friction welding device 12 is provided with a welding shoe 

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6

13, which is only shown in a highly schematized form and which is transferred by means 

of a transfer device 14 from a rest position at a distance from the strap into a welding 

position in which the welding shoe is pressed against the strap. The welding shoe, 

pressed against the strapping band by mechanical pressure and the simultaneous 

oscillating movement of the welding shoe at a predetermined frequency, melts the two 

layers of the strapping band. The locally plasticized or melted portions of strap B flow into 

each other and after the strap has cooled, a joint is formed between the two layers of 

strap. If necessary, the strap loop can then be cut from a supply roll of strap by means of 

a cutting device of the strapping tool 1, which is not shown in detail.

The feed of the tensioning wheel 7 in the direction of the tensioning plate, the rotary drive 

of the tensioning wheel 7 about the tensioning axis, the lifting of the tensioning wheel from 

the tensioning plate, the feed of the friction welding device 12 by means of the transfer 

device 14 of the friction welding device 12 as well as the use of the friction welding 

device 12 itself and the actuation of the cutting device are carried out by only one common 

electric motor M, which provides a drive movement for each of these components of the 

strapping tool. A replaceable battery 15, which can be removed in particular for 

recharging, is arranged on the strapping tool to supply the motor M with power. No other 

external auxiliary energy, such as compressed air or other electricity, is supplied to the 

strapping tool as shown in Figs. 1 and 2.

As shown in Fig. 2, the strapping tool according to the invention is designed to receive 

the drive movement of the motor for either the tensioning device or the friction welding 

device at two points on the drive axis of the motor. For this purpose, the motor M can be 

operated in both directions of rotation. The transmission of the drive movement to the 

tensioning device 6 or to the friction welding device 12 is automatically changed by a 

freewheel arranged on the drive shaft of the motor M, depending on the direction of 

rotation of the drive shaft. In one direction of rotation of the drive shaft, the drive 

movement is transmitted to the tensioning device 6. Due to the freewheeling, the friction 

welding device 12 does not experience any drive movement. In the other direction of 

rotation, the tensioning device 6 has no drive movement and the friction welding device 

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7

12 is driven. No manual switching operations are required to change the direction of 

transmission of the motorized drive movement. Freewheels of this type are already known 

in connection with strapping devices, which is why they will not be discussed in more 

detail here.

As also shown in Fig. 2, the motorized transmission of the drive movement to the friction 

welding device 12 is effected by means of a toothed belt drive 17 with an annularly closed 

toothed belt 17 which is guided over two gear wheels. One of the two gear wheels is 

arranged on the drive shaft of the electric motor M, the other is part of a gear of the friction 

welding device 12, with which the motorized drive movement moves both the transfer 

device 14 and the welding shoe 13 of the friction welding device 12. The welding shoe,

which is pressed onto two superimposed layers of the strapping band, can thus be set 

into an oscillating movement with a predetermined frequency and amplitude, with which 

the two layers of the strap are locally melted in the region of the welding shoe and welded 

together by the subsequent cooling.

On the drive shaft of the motor, behind the toothed belt drive 17 as seen from the motor 

M, there is a bevel gear 19 which is also part of a bevel gear mechanism of the tensioning 

device, as is a second bevel gear 20 with which it meshes. On the same shaft on which 

the second bevel gear 20 is arranged, there is also a first gear wheel 21 of a further 

toothed belt drive 22, which is also guided by a second gear wheel 23. The second gear 

wheel 23 of the toothed belt drive 22 is arranged on one end of a shaft 24, on which a 

first spur gear wheel 25 is also arranged. Both the second gear wheel 23 and the spur 

gear 25 are disposed on the shaft 24 so as to be non-rotatable.

The rocker 8 of the strapping tool is pushed onto the other end of the shaft 24, which is 

part of the tensioning device 6 and carries the tensioning wheel 7 and a gear mechanism, 

in this case a planetary gearing 26, which is connected upstream of the tensioning wheel 

7, for which purpose suitable bearing points can be provided on the rocker 8. The rocker 

8 is pushed onto the shaft 24 in such a way that it is arranged and mounted so that it can 

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pivot about the longitudinal axis of the shaft 8. The longitudinal axis of the shaft is 

therefore also the rocker axis 8a about which the rocker 8 can pivot.

The first spur gear 25 is in engagement with an external toothing of an input-side second 

spur gear 27 of the planetary gearing 26, which is designed in particular as a multi-stage 

planetary gearing. In addition to its toothing, the input-side spur gear 27 has an annular 

shoulder 27a which is provided as a clamping surface 27b for a first actuable clamp 29. 

In the embodiment, the first clamp is designed as a pivoting cam which can be brought 

into contact with the clamping surface 27b or can be pivoted away from it at a distance. 

The cam is arranged such that when the cam comes into contact with the clamping 

surface 27b, the clamping effect is further increased by rotating the input-side spur gear 

27 in the direction of rotation provided for the spur gear 27. By moving the cam toward 

the clamping surface 27b due to a corresponding switching operation, the spur gear 27 

can be locked against rotation. The cam 29 can also be removed from the clamping 

surface 27b by a switching operation, thus releasing the spur gear 27 for rotational 

movements.

An externally toothed sun gear 30, whose axis of rotation is identical to that of the inputside spur gear, projects from an end face of the spur gear 27 facing the tensioning wheel 

7. The sun gear 30 is disposed in the region of the axis of rotation 31 of a ring gear 32, 

the non-toothed outer surface 32a of which is associated with a second clamp 33. The 

clamp 33, which cooperates with the outer surface 32a, can in principle be designed in 

the same way as the first clamp 29 as a switchable cam which can be moved between 

two end positions, the ring gear 32 being blocked against rotation in one position and 

being released for rotational movements in the other position. Furthermore, an internal 

toothing of the ring gear 32 is in engagement with three planet gears 34 which are 

mounted on the end face of the following planet carrier 35 facing the ring gear 32. The 

planet gears 34 of the planet carrier 35 are also in engagement with the sun gear 30 of 

the input-side spur gear 27, which projects into the ring gear 32.

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On the other end face of the planet carrier 35 facing the tensioning wheel 7, a further sun 

gear 36 is arranged non-rotatably therewith, which is passed through a recess in the 

further planet carrier 37 designed as a ring gear. The sun gear 36 meshes with the planet 

gears 38 of the other planet carrier 37 facing the tensioning wheel. The planet gears 38 

of the second planet carrier 37 in turn mesh with an internal toothing of the tensioning 

wheel 7 and drive it perform a rotational movement. This rotational movement of the 

tensioning wheel 7, which is provided with a fine toothing on its outer circumferential 

surface, is used to grip the strap B with the circumferential surface and pull back the strap 

of the strap loop, thereby increasing a strap tension in the strap loop.

The second planet carrier 37 has a shoulder 37a on its outer surface which can be brought 

into contact with a stop element 39 by a rotational movement. The stop element 39 itself 

is not fixed to the rocker, but to the base plate 4 or another support which does not 

participate in the pivoting movement of the rocker 8.

When used for strapping packaged goods, the strapping tool 1 behaves as follows: After 

a strap loop with a commercially available plastic strapping band has been placed around 

the respective package, the strap loop is inserted into the strapping tool in the region of 

the strap end, in which the strap loop is double-layered in sections, and the strap end is 

held in the strapping tool with a strap clamp, which is not shown in detail. A section of the 

strap B immediately adjacent to the strap loop is placed over the tensioning plate 9 of the 

tensioning device 6. The rocker 8 with the tensioning wheel 7 and the upstream gear 

mechanism is in its upper end position, in which the tensioning wheel 7 is arranged at a 

distance (at its largest intended distance) from the tensioning plate 9, resulting in the 

largest possible opening gap, which allows the strap to be inserted into the tensioning 

device easily, comfortably, and therefore also quickly. The rocker is then lowered onto the 

tensioning plate 9 and pressed against the strap located between the tensioning plate 9 

and the tensioning wheel 7. In the described embodiment of the invention, both this 

transfer movement of the tensioning wheel and the amount of contact pressure exerted 

by the tensioning wheel on the strap at the beginning of the tensioning process can be 

generated by one or more pre-stressed spring elements (not shown). By pressing a button 

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10

10, the spring element can be released and the entire strapping process with its 

successively executed process steps “tensioning,” “sealing,” “cutting,” and “lifting the 

rocker” can be initiated, for which preferably no further intervention of the operator of the 

strapping tool is required.

After the tensioning wheel has automatically moved from the open position to its 

tensioning position (see arrow 40 in Fig. 2), in which it rests on the strap B and presses 

via the strap onto the tensioning plate 9, the motorized drive movement is transferred to 

the tensioning wheel 7. Preferably, this is done automatically after the tensioning wheel 7 

has reached its tensioning position. For this purpose, the second clamp 33 is transferred 

to its position in which it presses against the ring gear 32. The ring gear 32 is thus locked 

and prevented from performing rotational movements. The first clamp 29, on the other 

hand, is still positioned at a distance from the input-side spur gear 27 and releases the 

spur gear 27 for rotational movements. The motorized drive movement, which is 

transmitted via the bevel gear to the second toothed belt drive 22 and thus to the first spur 

gear 25 due to the intended specific direction of rotation of the motor M, is transmitted 

from here to the tensioning wheel 7 via the input-side spur gear 27, the sun gear 30, the 

planet gears 34, the sun gear 36 and the planet gears 38 in the sequence of the gear 

members mentioned. The tensioning wheel 7 can be driven in the predetermined direction 

of rotation by the multi-stage planetary gearing, among other things, with a greatly 

reduced rotational movement of the motor.

In the “tensioning” operating state of the strapping tool described above, the driven 

tensioning wheel 7, which is in engagement with the strap, generates a corresponding 

counterforce acting in the opposite direction on the tensioning wheel 7, depending on the 

resistance force resulting from the strap tension. This counterforce acts in the opposite 

transmission direction to the motorized drive movement on all the gear members of the 

multi-stage planetary gearing involved in the transmission of the driving movement. 

Therefore, in order to use this counterforce for the purpose described below, it would be 

possible to use any of these gear members for this purpose. In the embodiment, the 

planet carrier 37 is used for this purpose. The planet carrier 37 is supported on the base 

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11

plate 4 via the stop element 39, whereby the entire tensioning device 6 is pressed onto 

the strap around the rocker axis in proportion to the resistance force (strap tension). The 

tensioning wheel 7 is thus pressed onto the strap in proportion to the strap tension. As 

the strap tension steadily increases, the strap tension generated by the tensioning

process is used to advantageously increase the pressure force of the tensioning wheel 7 

on the strap B, thereby counteracting the risk of the tensioning wheel 7 “sliding through”

or slipping during the tensioning process, which also increases as the strap tension 

increases.

After completion of the tensioning process and the subsequent welding process to form 

the seal, as well as a motorized cutting process by means of a cutting device integrated 

in the strapping device, which is not shown in detail, it should be possible to remove the 

strap from the strapping device quickly and without complications. For this purpose, a 

motorized lifting movement of the tensioning wheel 7 from the tensioning position is 

provided. This operation, too, should preferably be carried out automatically, without any 

additional triggering by the operator of the strapping tool. The control system of the 

strapping tool 1 therefore provides for the rocker 8 and thus the tensioning wheel 7 to be 

lifted from the strap B by a pivoting movement about the rocker axis 8a as soon as a 

predetermined or predeterminable strap tension has been reached and a sufficient 

distance has been created between the tensioning plate 9 and the tensioning wheel 7.

In the embodiment, the active connection between the electric motor M and the tensioning 

wheel 7 is first released and an active connection is established between the electric 

motor M and the rocker 8. This is done by switching the clamps 29, 33. The first clamp 29 

is lowered onto the clamping surface 27b of the spur gear 27 and is brought into clamping 

contact with it. As a result, the input-side spur gear 27 is fixed on its shaft and locked 

against rotational movement, which is not shown in detail and on which the entire 

planetary gearing is located. In addition, the previously existing clamping of the ring gear 

32 is released by removing the second clamp 33 from the ring gear 32, thus releasing the 

ring gear 32 for rotational movements. The tensioning wheel 7 can thus rotate freely and 

no longer has an active connection to the electric motor M, which could transmit a drive 

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12

movement. Due to the locking of the input-side spur gear 27 of the planetary gearing, a 

drive movement of the electric motor M with the same direction of rotation as during the 

tensioning process is now used, so that the first spur gear 25 entrains the input-side spur 

gear 27 during its rotary movement without a change in the point of engagement of the 

toothing of the two spur gears 25, 27 occurring. The input-side spur gear 27 thus performs 

a rotary movement about the axis of the first spur gear 25, which corresponds to the 

rocker axis 8a. The input-side spur gear 27, which is also non-rotatably connected to the 

rocker 8 by the clamping, takes the rocker 8 with it during this movement. As a result, the 

rocker 8 and the tensioning device 6 attached to it are lifted. The rotary movement of the 

rocker can be limited by a stop or an end position sensor, which stops the motor M after 

reaching an end position in the open position of the rocker 8 and triggers a locking of the 

rocker. The motorized lifting movement of the rocker against the direction of action of the 

spring element also provides the spring element with an increased pretensioning force. 

The strapping band can now be removed from the strapping tool 1. The strapping tool is 

now ready for a subsequent new strapping operation, which can be carried out in the 

same way as the strapping operation described above.

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List of Reference Signs

1 Strapping Device 27b Clamping Surface

2 Housing 29 First Clamp

3 Handle 30 Sun Gear

4 Base Plate 31 Axis of Rotation Gearing 

6 Tensioning Device and Tensioning Wheel

7 Tensioning Wheel 32 Ring Gear

8 Rocker 32a Outer Surface

8a Rocker Pivot Axis 33 Second Clamp

9 Tensioning Plate 34 Planet Gear

10 Button 35 Planet Carrier

12 Friction Welding Device 36 Sun Gear

13 Welding Shoe 37 Planet Carrier

14 Transfer Device 37a Shoulder

15 Battery 38 Planet Gear

17 Toothed Belt Drive 39 Stop Element

18 Toothed Belt 40 Arrow

19 Bevel Gear

20 Bevel Gear B Strap

21 Gear wheel M Motor

22 Toothed Belt Drive

23 Gear wheel

24 Shaft

25 First Spur Gear

26 Gearing

27 Spur Gear

27a Shoulder

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 44 of 51 PageID #: 1202
14

Claims

1. A mobile strapping device for strapping packaged goods with a strapping band, 

comprising 

a tensioning device for applying a strap tension to a loop of a strapping band, the 

tensioning device being provided with a tensioning wheel which can be driven in 

rotation by a motor about a tensioning axis and is intended for engaging in the 

strapping band, and the tensioning wheel being arranged on a rocker which can 

be pivoted by a motor about a rocker axis in order to pivot the tensioning wheel 

towards or away from a tensioning plate, 

and

a welding device for producing a welded joint, in particular a friction welded joint, 

on two superimposed regions of the loop of the strapping band by means of a 

welding element which is provided for locally heating the strapping band, 

and

having a rechargeable energy store for storing electrical energy which can be 

released as drive energy for motorized drive movements at least for the friction 

welding device for producing a friction welded joint and for motorized rotational 

movement of the tensioning wheel,

characterized in that, at least temporarily during the transmission of the 

motorized drive movement to the tensioning wheel, the motorized drive 

movement is also used to increase a contact pressure of the tensioning wheel in 

the direction of the tensioning plate by means of a motorized pivoting movement 

of the rocker in the direction of the tensioning plate.

2. Mobile strapping device according to claim 1, characterized in that the motorized 

drive movement is used in such a way that, during the tensioning process of the 

strapping band, a counterforce acting on the tensioning wheel from the strapping 

band is utilized, by means of the tensioning wheel engaging in the strapping 

band and rotating against a strap tension, in order to increase the contact 

pressure of the tensioning wheel in the direction of the tensioning plate. 

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 45 of 51 PageID #: 1203
15

3. Mobile strapping device according to at least one of the preceding claims, 

characterized by an increase in the contact pressure which is at least 

substantially proportional to the respective instantaneous strap tension.

4. Mobile strapping device according to at least one of the preceding claims, 

characterized by only one motor, by means of the drive movements of which, in 

identical directions of rotation, the tensioning wheel for tensioning the strapping 

band can be set in rotation and the rocker with the tensioning wheel arranged 

thereon can be pivoted about the rocker axis, in particular in such a way that the 

tensioning wheel can be pivoted away from the tensioning plate with this pivoting 

movement. 

5. Mobile strapping device according to the pre-characterizing portion of claim 1, 

characterized by means for variably pressing the tensioning wheel onto the 

strapping band depending on the strap tension. 

6. Mobile strapping device according to claim 5, characterized in that the variable 

pressing of the tensioning wheel onto the strapping band depending on the strap 

tension is effected by a motorized drive movement.

7. Mobile strapping device according to claim 6, characterized in that the variable 

pressing depending on the strap tension is effected by the same motorized drive 

movement with which the tensioning wheel is also driven in rotation.

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 46 of 51 PageID #: 1204
[stamp:] Unchangeable copy 1/3

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 47 of 51 PageID #: 1205
[stamp:] Unchangeable copy 2/3

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 48 of 51 PageID #: 1206
[stamp:] Unchangeable copy 3/3

Legend (from the top, clockwise)

Tensioning

M 

[illegible]

Spur Gear

Ring Gear

Planet Carrier

Sun Gear

Planet Carrier

[illegible]

Tensioning Wheel

[illegible]

Rocker

Releasing Tension

Switching

Spur Gear

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 49 of 51 PageID #: 1207
Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 50 of 51 PageID #: 1208
DOCUMENT MADE AVAILABLE UNDER THE PATENT 

COOPERATION TREATY (PCT)

International application number: PCT/IB2013/002116

International filing date: 24 September 2013 (24.09.2013)

Document type: Certified copy of priority document

Document details: Country/Office: CH

Number: 01724/12

Filing date: 24 September 2012 (24.09.2012)

Date of receipt at the International Bureau: 09 May 2014 (09.05.2014)

Remark: Priority document submitted or transmitted to the International Bureau in compliance with Rule

17.1(a),(b) or (b-bis)

34, chemin des Colombettes

1211 Geneva 20, Switzerland

www.wipo.int

Case 2:24-cv-00080-JRG Document 57-4 Filed 10/17/24 Page 51 of 51 PageID #: 1209