WO2013159806A1

WO2013159806A1 - Filling system for hand-held equipment, in particular chainsaw, and hand-held equipment adapted to be coupled to the same

Info

Publication number: WO2013159806A1
Application number: PCT/EP2012/057402
Authority: WO
Inventors: Wolfgang Kast; Markus Maag; Michael Kistler
Original assignee: Husqvarna Ab
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2013-10-31

Abstract

The invention in particular is directed to a filling system (1) for a hand-held equipment. The filling system (1) is adapted to simultaneously feed at least two different operating fluids to at least one operating fluid tank (15, 16). The filling system (1) comprises a unique feeding adapter (2) having at least two different feeding ports (10, 11) for a respective one of the at least two different operating fluids.

Description

FILLING SYSTEM FOR HAND-HELD EQUIPMENT, IN PARTICULAR CHAINSAW, AND HAND-HELD EQUIPMENT ADAPTED TO BE COUPLED TO THE SAME

The invention in particular is related to a filling system for feeding operating fluids to a tank of a hand-held equipment, in particular a chainsaw. Further, the invention is directed to a respective hand-held equipment, in particular chain-saw, and a canister.

Hand-held equipment such as chainsaws driven by internal combus^¬ tion engines generally require different types of operating flu^¬ ids. Chainsaws generally require chain lubricant on the one hand and fuel for operating the internal combustion engine on the other hand. Refilling of the different operating fluids is still comparatively cumbersome.

Therefore it is an object of the invention to provide a possi- bility, in particular a filling system, which allows internal combustion engine driven hand-held equipment to be filled more comfortably with essential operating fluids. Further, a respec^¬ tive hand-held equipment, in particular a chainsaw, shall be provided .

According to claim 1 a filling system is provided which is specially adapted to simultaneously feed at least two different op^¬ erating fluids to at least one operating fluid tank of an internal combustion engine driven hand-held equipment.

The term "simultaneously" shall mean that the filling system is adapted such that at least two different operating fluids can be fed concurrently in a single filling operation. An operating fluid in particular shall mean any type of fluid required for properly operating the hand-held equipment and being consumed during operation. Examples for operating fluids are lubricant fluids, in particular chain lubricant fluids, oil, fuel, i. e. gasoline, and the like. The term "at least one tank" in particular shall include variants in which the different operating fluids are fed into a sin^¬ gle tank and are mixed therein, and in which different operating fluids are feed to separate tanks or compartments of a tank. It shall be pointed out that the number of tanks and tank compart- ments may be adapted to respective needs.

The filling system comprises a unique feeding adapter having at least two feeding ports, in particular two different feeding ports, each for a respective one of the at least two different operating fluids. The term "unique" shall mean that a single feeding adapter, in particular fuelling adapter, is provided to fill or feed two or more operating fluids in a single feeding operation, preferably to fill or feed all relevant operating fluids in a single feeding operation.

The number of feeding ports may correspond to the number of op^¬ erating fluids required by the hand-held equipment. If two or more operating fluids are preferred to be fed in premixed form, such as two-stroke fuel, one single port may be used to feed re- spective premixed operating fluid. A two-stroke fuel may be con^¬ sidered as one operating fluid. However, different operating fluids in the end constituting a premixed operational fluid, such as two-stroke fuel, may be fed via separate feeding ports. In the case of a chainsaw, two stroke fuel may be a first oper^¬ ating fluid and chain lubricant oil may be a second operating fluid. It shall be noted that two stroke fuel, a mixture of gas^¬ oline and two-stroke oil, may also be provided in using two sep^¬ arate feeding ports, one for gasoline and one for two stroke oil. In this case, chain lubricant oil may be provided as a third operating fluid. Gasoline and two stroke oil may be fed to a common tank or to separate tanks of the hand-held equipment. Separate tanks may be provided if two stroke fuel is mixed by the hand-held equipment itself.

The feeding adapter may be implemented as a type of interface for coupling with a corresponding counter-interface or counter feeding adapter of the hand-held equipment. The feeding ports of the feeding adapter may be fluidly connected, in particular via hoses or ducts, to respective compartments of a filling unit, in particular canister. Hoses or ducts fluidly connecting the feeding ports to respective compartments preferably are of flexible type at least in sections running outside the canister. Hoses or ducts running within the canister may be of rigid, i.e. inflexi^¬ ble, type.

The compartments, i. e. storage compartments, may be specially adapted to accommodate respective operating fluids, if required. A compartment may for example be implemented as a partial canis^¬ ter. The number of compartments or partial canisters may be se^¬ lected in accordance with the number of operating fuels to be fed to the hand-held equipment, i. e. in accordance with the number of feeding ports.

Each compartment of the filling unit, in particular canister, may be in fluid connection with a nozzle or valve provided at respective feeding ports of the feeding adapter. Respective noz^¬ zles and/or valves may be adapted to allow quick release of re- spective operating fluids at corresponding feeding ports. In particular the feeding ports, in particular nozzles or valves may comprise shut-off elements or shut-off units, comprising for example unidirectional valves, and adapted to fluid tightly shutting-off and releasing respective feeding ports in the dis- connected and connected state, respectively. Note that also counter feeding ports of a counter feeding adapter of the hand- held equipment may be provided with shut-off units adapted to fluid tightly shut off and release respective counter feeding ports in the disconnected and connected state, respectively. The disconnected state shall mean the state in which the feeding adapter and counter feeding adapter are not connected to each other. The connected state shall mean the state in which the feeding adapter and counter feeding adapter are connected and transfer of operating fluids from the filling unit to the handheld equipment is possible, in particular via respective feeding ports, counter feeding ports and the like.

For feeding respective operating fluids, the unique feeding adapter of the canister may be connected to the counter feeding adapter in a first step. In a second step, the canister may be raised, in particular to a level above the hand-held equipment, or more specifically to a level above respective operating fluid tanks of the hand-held equipment, such that gravity-driven flow of the operating fluids into corresponding tanks can take place. If, in a filling action, the operating fluid tank of the handheld equipment is filled with operating fluid, and a pressure balance does not take place the flow of operating fluid will cease. To avoid such underpressure conditions within the com^¬ partments of the filling unit, adequate pressure balance, for example by providing small diameter pressure balance ducts lead^¬ ing from a feeding port to the respective compartment, may be provided .

In order to avoid any leakage of operating fluids during a fill- ing action, the unique feeding adapter and correspondingly the counter feeding adapter shall be implemented to provide and es^¬ tablish a fluid tight seal in the connected state. Here, the unique feeding adapter and counter feeding adapter may for example be adapted to establish a fluid tight form fit in the con- nected state. Further, respective unidirectional valves and the like preventing escape of operating fluids in the disconnected state prevent leakage of operating fluids.

Different types of operating fluids, such as for example lubri- eating oil and gasoline, in particular two stroke fuel, and the like can be simultaneously fed to the hand-held equipment in a single filling or fueling operation. Clearly, using the filling system will lead to enhanced, comparatively comfortable and time saving filling and/or fuelling operations.

In a preferred embodiment, the filling system comprises, as al^¬ ready indicated further above, at least two storage compartments for receiving operational fluids of the hand-held equipment, wherein each feeding port of the unique feeding adapter is flu- idly connected to at least one of the storage compartments. The compartments may make up sections of a multi chamber canister. In the alternative a storage compartment may represent a sepa^¬ rate partial canister. In particular with multiple chamber filling units or canisters it is possible that the ducts or hoses connected to respective feeding ports enter the multiple chamber filling units at a common wall section. It may be the case that one of the ducts dis^¬ charges into a first chamber or compartment comprising the com- mon wall section, and that the other duct fluid tightly passes through the first compartment to enter and discharge into a sec^¬ ond, separated and adjacent compartment. Note that respective ducts or hoses may also be guided directly to respective tank chambers without passing through other compartments.

It is preferred that, in particular flexible, feeding ducts or hoses respectively connected to one of the at least one feeding port are provided with, and in particular are fixed to, the unique feeding adapter. The ducts or hoses may be provided between the unique feeding adapter and a respective fluid compartment. At the compartment end of the ducts or hoses, the ducts or hoses may be connected and sealed by suitable connectors. Connections between the ducts or hoses on the one hand and the unique feeding adapter and/or the connectors on the other hand may, in particular selectively, be implemented as releasable or detachable connections. For se^¬ curity reasons, in particular for feeding gasoline, non- detachable connections may be preferred.

Ducts or hoses used for connecting the unique feeding adapter to respective compartments may be implemented as single ducts or hoses. However, it is also possible that ducts or hoses are com^¬ bined to make up a multi-duct or multi-hose element or feeding element.

According to a further preferred embodiment, the unique feeding adapter comprises a quick release coupling connectable to a cor^¬ responding counter feeding adapter, preferably of quick-release type. Providing a quick release coupling greatly simplifies feeding respective operating fluids. The feeding nozzle may be part of respective feeding ports.

The term "quick release" shall in particular mean that respec- tive couplings and counterpart couplings to be interconnected can be connected and released again in a quick and easy and suf^¬ ficiently tight manner. Preferably, a quick release coupling on^¬ ly requires a plug or unplug operation, in particular push or pull operation, for establishing/releasing a connection, in par- ticular fluid tight connection. A quick release coupling in particular shall be adapted to avoid leakage of operating fluids during connecting and/or disconnecting operations.

A quick release coupling preferably is adapted or implemented as a self-locking coupling. This in particular shall mean that upon connecting filling ports and corresponding counterpart ports a tightly locked configuration is established such that no operat^¬ ing fluid can escape during a filling operation. Also, the term self-locking shall mean that the feeding ports of the unique feeding adapter are tightly closed in cases that no counterpart ports and the like are coupled to the unique feeding adapter, which prevents leakage of operating fluids from the tank during operation. Here, self locking elements, in particular valves, may be provided at the unique feeding adapter and counter feed^¬ ing adapter, respectively.

It is preferred that the unique feeding adapter is designed such that a counterpart adapter can only be connected in a single predefined orientation. Such a configuration shall ensure that a feeding port for a special type of operational fluid is auto- matically connected to a corresponding counter feeding port for the same operating fluid. In other words, it can and shall be prevented that feeding ports are interchanged which would mean that operating fluids are erroneously filled in. Here, the feed^¬ ing adapter and/or corresponding counter feeding adapters may have special geometric shapes, noses or other elements prevent^¬ ing incorrect connection.

In a further configuration, one of the at least one feeding ports is adapted to feed lubricant oil to the hand-held equip- ment, and another one of the at least one feeding ports is adapted to feed fuel to the hand-held equipment. The term fuel in particular shall mean an operating fluid for operating an internal combustion engine of the hand-held equipment. In case that the hand-held equipment is a chainsaw, for example, the lubricant oil may be a type of chain lubricant oil. As chainsaw internal combustion engines typically are driven by two-stroke engines, the fuel may be a two-stroke fuel. One great advantage is that different operating fluids needed for operating the hand-held equipment, in particular chainsaw, can and will be fed simultaneously. Hence, the feeding operation as such can be completed in a much shorter period of time as compared to chainsaws provided with separate refueling fittings. Also, a time related advantage can be obtained by the fact that fuel caps needed with conventional chainsaw tanks are not re^¬ quired any more, in particular because of the possibility of providing self locking feeding ports or counter feeding ports. With conventional chainsaws, opening and closing operations of the fuel caps are time consuming processes and in most cases re- quire special tools.

A great advantage in particular with refilling time can be obtained if a self-closing or self-locking unique feeding adapter is used. Here, refueling of the operating fluids is preferably conducted in a plug and fill operation without any time- consuming preparatory steps such as opening and closing fuel caps and the like.

In a further embodiment, the feeding ports, in particular also ducts or hoses connected thereto, are adapted such that a preset amount of each of the operating fluids is fed in a single fill^¬ ing action. Adaptation may in particular be obtained by suitably setting or designing geometry, in particular diameter, of the feeding ports, in particular ducts or hoses. Note that a filling system that is properly adapted will enable to almost uniformly refill all tanks no matter of their size and nature, in particu^¬ lar viscosity, of respective operating fluids.

Respective geometries, in particular diameters, of the feeding ports and/or feeding ducts or hoses may be selected in depend^¬ ence of the overall filling volume to be fed in a single filling action, the ratio of the filling volumes and other parameters. Further, for designing suitable feeding port, duct and hose ge^¬ ometries, parameters such as viscosity or an average viscosity of the operating fluids or other parameters linked to flow and filling velocity and the like of the operating fluids may be considered .

In a further embodiment, the filling system is implemented such that at least one of the feeding ports comprises a shut-off unit adapted to automatically shut off a respective feeding port in the disconnected state, and automatically release the respective feeding port in the connected state. Similarly, respective coun^¬ ter feeding ports may comprise adequate shut off mechanisms. A shut off unit may comprise nozzles, gadgets, valves, in particu^¬ lar unidirectional or non-return valves, and other elements pre^¬ venting leakage of operating fluids in the course of connecting and disconnecting the unique feeding adapter to a corresponding counter feeding adapter.

According to claim 10, there is provided a hand-held equipment comprising at least one operating fluid tank fluidly connected to a counter feeding port of a counter feeding adapter. The counter feeding adapter is adapted to be coupled to a unique feeding adapter of a filling system as described in more detail further above. The filling system in particular is adapted to feeding at least one operating fluid to the at least one operat^¬ ing fluid tank via the at least one counter feeding port.

With the hand-held equipment, at least one operating fluid tank is connected to and adapted to be filled via the filling system. By providing the filling system, a great time advantage can be obtained with filling operations. As to further advantages and advantageous effects, reference is made to the description above .

According to claim 11, a chainsaw is proposed which comprises at least one operating fluid tank fluidly connected to a counter feeding port of a counter feeding adapter. The counter feeding adapter is adapted to be coupled to a unique feeding adapter of a filling system according to any embodiment and variant de- scribed beforehand. The counter feeding adapter is further adapted to feed at least one operating fluid to the at least one operating fluid tank. As already stated further above, chainsaws generally require as operating fluids chain lubricant oil and generally a two-stroke fuel. Providing such a double, or more general multiple, filling system as proposed by the invention, it is possible to feed chain lubricant oil and two-stroke fuel in a single filling op- eration. By adequately designing and selecting the feeding ports and respective ducts or hoses chain lubricant oil and two-stroke fuel tanks both can be filled at the same time. Apart from the fact that filling operations can be conducted faster, a further advantage as compared to systems with multiple fluid or fuel caps and respective inlet openings for each of the operating fluids is that refilling or refueling of one of the fluids, such as chain lubricant oil, will not be forgotten.

It shall be noted, that other hand-held equipment than chain- saws, even hand-driven equipments and even machines, such as lawn mowers and the like, may be adapted to be filled with the filling system as described in more detail further above.

Selected embodiments of the invention will now be described in connection with the annexed figures, in which:

Fig. 1 shows a perspective, partially broken view of a fill^¬ ing system; Fig. 2 shows a perspective view of a unique feeding adapter;

and

Fig. 3 shows a chainsaw having a filling system for operational fluids. Fig. 1 shows a perspective and partially broken view of a fill^¬ ing system 1. The filling system 1 in the present case comprises a unique feeding adapter 2, a canister 3 and ducting 4 connecting the unique feeding adapter 2 to the canister 3. The unique feeding adapter 2 in the present case comprises a cylinder shaped head of oval cross section. However, any other shapes are conceivable .

The filling system 1 in the present case is intended for feeding operating fluids to chainsaws and similar devices, generally re^¬ quiring two different operating fluids for operation. One of the operating fluids typically is a type of fuel, in particular two- stroke fuel, for operating an internal combustion engine of the chainsaw; and the other operating fluid is a chain lubricant re- quired for proper lubricating the cutting chain of the chainsaw. Note that a respective filling system may be used for all types of hand-held equipment, in particular requiring two different operating fluids. Note that by adequately designing the unique filling adapter it may also be that the filling system can be used to fill only one of the operating fluids to a hand-held equipment. Feeding ports of operating fluids not to be fed to the hand-held equipment in such instances may remain closed or may automatically be

blocked.

In order to be able to provide or supply the two different oper^¬ ating fluids, the canister 3 in the present case comprises two compartments, i. e. a first compartment 5 intended to be filled with gasoline, e. g. two-stroke fuel, and a second compartment 6 intended to be filled with chain lubricating oil. The first 5 and second compartments 6 are separated by a respective wall.

It shall be noted, that the second compartment 6, i. e. the com- partment intended for chain lubricating oil, is smaller than the first compartment 5, i. e. the compartment intended for gasoline which is used for powering an internal combustion engine. This is due to the fact that in ordinary use of chainsaws, consump^¬ tion of gasoline in general is higher than consumption of chain lubricant. In general, it shall be noted that the relative sizes of the tank compartments 5, 6 shall be selected according to the consumption characteristics of the hand-held equipment.

The canister 3 is connected by the ducting 4 to the unique feed^¬ ing adapter 2. The ducting 4 enters the canister 3 via a lead- through 7 tightly sealing the tank wall against the ducting 4.

The ducting 4 in the present case comprises two ducts, i. e. a first duct 8 for gasoline and a second duct 9 for lubricant oil. The first duct 8 immediately discharges into the first compart- ment 5. The second duct 9 enters the tank 3, i. e. the first compartment 5, together with the first duct 8 and is guided through the first compartment 5, passes the separating wall in an operation fluid tight manner and finally discharges into the second compartment 6.

The canister 3 in the present case comprises two separate com^¬ partments 5, 6. If required, and in the alternative two (or more) separate compartments may be provided. The ducting 4, in more detail the first duct 8 and second duct 9, connect the respective compartments 5 and 6 to the unique feeding adapter 2. If required, the ducting 4 and respective ducts are manufactured from flexible, in particular plastic, ma^¬ terials .

The feeding adapter 2 and ducting 4 are connected to each other in a fluid-tight manner. The feeding adapter 2 is implemented as a quick release coupling. Fig. 2 shows a perspective view of the unique feeding adapter 2 and quick release coupling in a front side view. The feeding adapter 2 has two different feeding ports. In more detail, a first feeding port 10 is provided for feeding gaso^¬ line, and a second feeding port 11 is provided for feeding lu^¬ bricant oil.

The first feeding port 10 is tightly connected to the first duct

8 and the second feeding port is tightly connected to the second duct 9. Note that the term "tightly" shall mean that escape of gasoline or lubricant oil is and will be prevented.

From Fig. 2 it can in particular be seen that after connecting a corresponding counter-feeding adapter, both operating fluids can be simultaneously fed from the canister 3 to the hand-held equipment 14. In this connection, it shall be mentioned that the term "unique feeding adapter" addresses the fact that different operating fluids can be fed simultaneously in a single filling or fueling operation.

A corresponding counter feeding adapter 19, provided at the hand-held equipment, may comprise counter feeding ports 20, 21 adapted, in particular in geometry, to be connected to and mate with corresponding feeding ports 10, 11.

The unique feeding adapter 2, in particular the first 10 and second feeding port 11, together with the first 8 and second duct

9 are implemented and dimensioned such that the operating fluids contained in the first compartment 5 and second compartment 6 can be simultaneously filled, at least to a satisfactory filling level of all tank compartments, in a single filling operation. Filling all operational fluids in a single filling action and in a satisfactory amount is of great importance for proper and con^¬ tinued operation of the hand-held equipment.

In order to fill respective compartments in a single filling op^¬ eration with a satisfactory amount of operating fluid in a single filling operation, the feeding ports 10, 11 and respective ducts 8, 9 are dimensioned, in particular in geometric dimen^¬ sions such as diameter, such that optimal flow rates can be ob^¬ tained. Here, flow characteristics of respective operating flu^¬ ids, viscosity and other parameters may be considered.

As can in particular be seen from Fig. 2, the feeding adapter 2 is implemented as a quick release coupling 12, in particular adapted to connect to and to release a corresponding counter feeding adapter 19 (see Fig. 3) in a quick connect or release manual operation. In the present case, the feeding adapter 2 is implemented as a male fitting having a groove 13 in which a tongue or nose of a corresponding counter feeding adapter (19) implemented as female fitting, for example, can engage. In order to prevent leakage of operational fluids during a fill^¬ ing operation, the male and female fitting, in particular the groove 13 and corresponding tongue or nose, are and may be im^¬ plemented such that a tight connection between the unique feed^¬ ing adapter 2 and corresponding counter feeding adapter 19 is obtained.

The term "tight" in particular shall mean that leakage of opera^¬ tional fluids such as gasoline or lubricants is prevented. Ade^¬ quate sealings or sealing lips can be provided at or near the groove 13 and/or corresponding tongue or nose. It shall be noted that in the alternative, the unique feeding adapter 2 can be im^¬ plemented as female fitting while a corresponding counter feed^¬ ing adapter 19 is implemented as male fitting. The unique feeding adapter 2 favorably is implemented such that the first 10 and second feeding port 11 are impervious for op^¬ erational fluids in case that no counter feeding adapter 19 is connected. The same applies for counter feeding adapter 19. For implementing tight seals at the feeding ports 10 and 11 and counter feeding ports 20, 21, unidirectional valves or similar elements, i.e. self closing elements and the like, may be pro^¬ vided .

Fig. 3 shows a chainsaw 14 as an example for a hand-held equip- ment . The chainsaw 14 is adapted to be filled with a filling system 1 as described in connection with Fig. 1 and Fig. 2. In more detail, the chainsaw 14 comprises a first tank 15 adapted to receive two-stroke fuel for operating the internal combustion engine of the chainsaw 14, and a second tank 16 adapted to re- ceive chain lubricating oil for lubricating the cutting chain of the chainsaw.

The first tank 15 and second tank 16 are connected via a first tube 17 and second tube 18, respectively, to a unique counter feeding adapter 19. The unique counter feeding adapter 19 comprises a first counter feeding port 20 fluidly connected to the fist tube 17 and first tank 15. The unique counter feeding adapter 19 further comprises a second counter feeding port 21 fluidly connected to the second tube 18 and second tank 16. The first 17 and second tube 18 may, at least partially, be made from a flexible, in particular plastic, material. The fist 17 and second tube 18, at least partially, may also be made from a rigid, in particular unflexible, material, such as metals. The counter feeding adapter 19 is designed such that it mates with the unique feeding adapter 2 described in connection with Fig. 1 and 2. This in particular shall mean, that the feeding adapter 2 and counter feeding adapter 19 can be fluid tightly coupled to each other in order to feed operating fluids from the canister 3, in particular compartments 5 and 6, to the first 15 and second tank 16.

Filling, in particular refilling, the tank or tanks, i. e. in the embodiment of Fig. 3 the first 15 and second tank 16, may be conducted as follows. In a first step, the unique feeding adapter 2 is coupled to the counter feeding adapter 19 provided at the chainsaw 14. Coupling the adapters 2, 19 may be conducted in a manual operation for example. By providing adequate gaskets or seals, the feeding adapter 2 and counter feeding adapter 19 will be fluid-tightly connected to each other. Upon connecting the adapters 2, 19, the first feeding port 10 is fluidly connected and coupled to the first counter feeding port 20 and the second feeding port 11 is fluidly connected to the second counter feeding port 21.

Nozzles or unidirectional or non-return valves may be provided at the feeding ports 10, 11 and counter feeding ports 20, 21 in order to avoid leakage of operating fluids in the disconnected state of the adapters 2, 19. The nozzles and valves may further be adapted such that a flow of operating fluids from the canis^¬ ter 3, i.e. the first 5 and second compartment 6, to the first 15 and second tank 16 is possible in the connected state.

Due to a fluid tight connection between the adapters 2, 19 and respective nozzles and valves, no operating fluid, in more de^¬ tail essentially no operating fluid, can or will escape during a filling operation. For filling the first 15 and second tank 16, the canister 3 may be raised above the chainsaw, i.e. the first 15 and second tank 16, such that respective operational fluids can enter the first 15 and second tank 16 by gravity. Pressure balance ducts provided in or at the ducts 8, 9, feeding ports 10, 11, counter feeding ports 20, 21 and/or tubes 17, 18 may help to avoid underpressure conditions in the compartments 5, 6 and tanks 15, 16 during filling.

During the feeding operation, the operating fluids, in the present case two operating fluids, are simultaneously fed to the tanks 15, 16 via the unique feeding adapter 2 and counter feed^¬ ing adapter 19. The tank sizes, and diameters of the ducts 8, 9, feeding ports 10, 11, tubes 17, 18 and counter feeding ports 20, 21 and other geometries are designed and dimensioned such that the tanks 15, 16 can be uniformly and essentially completely filled with respective operating fluids in a single filling op^¬ eration . After having filled all operating fluid tanks 15, 16 with re^¬ spective operating fluids, the feeding adapter 2 and counter feeding adapter 19 can be disconnected from each other. As already mentioned, the self closing mechanism provided, for exam^¬ ple by respective nozzles and/or valves, can prevent leakage of operational fluids from the feeding adapter 2, and counter feeding adapter 19 upon and after disconnecting both adapters 2, 19.

As can be seen, filling of different operational fluids to a hand-held equipment can be greatly enhanced by the proposed filling system.

List of reference numerals

1 Filling system

2 unique feeding adapter

3 canister

4 ducting

5 first compartment

6 second compartment

7 lead-through

8 first duct

9 second duct

10 first feeding port

11 second feeding port

12 quick release coupling

13 groove

14 chainsaw

15 first tank

16 second tank

17 first tube

18 second tube

19 counter feeding adapter

20 first counter feeding port

21 second counter feeding port

Claims

1. Filling system (1) adapted to simultaneously feed at least two different operating fluids to at least one operating fluid tank (15, 16) of an internal combustion engine-driven hand-held equipment (14), the filling system (1) comprising a unique feeding adapter (2) having at least two different feeding ports (10, 11) for a respective one of the at least two different operating fluids.

2. Filling system (1) according to claim 1, comprising at least two storage compartments (5, 6) for receiving operational fluids of the hand-held equipment (14), wherein each feeding port (10, 11) of the unique feeding adapter (2) is fluidly connected to at least one of the storage compartments (5,

6) .

3. Filling system (1) according to at least one of claims 1 and

2, wherein the unique feeding adapter (2) is adapted to be fluid-tightly coupled to a counter feeding adapter (19) of a hand-held equipment (14) .

4. Filling system (1) according to at least one of claims 1 to

3, wherein, in particular flexible, feeding ducts (8, 9) respectively connected to one of the at least two feeding ports (10,11) are provided with, and in particular are fixed to, the unique feeding adapter (2) .

5. Filling system (1) according to at least one of claims 1 to

4, wherein the unique feeding adapter (2) comprises a quick release coupling (12) connectable to a corresponding feeding nozzle of quick-release type.

6. Filling system (1) according to at least one of claims 1 to

5, wherein one of the at least two feeding ports (11) is adapted to feed lubricant oil to the hand-held equipment (14), and another one of the at least two feeding ports (10) is adapted to feed fuel to the hand-held equipment (14) .

7. Filling system (1) according to claim 6, wherein the handheld equipment is a chainsaw (14), and one feeding port (11) is adapted to feed chain lubricant oil and the other feeding port (10) is adapted to feed fuel, in particular two-stroke fuel .

8. Filling system (1) according to any of claims 1 to 7, wherein the feeding ports (10, 11) are adapted such that a preset amount of each of the operating fluids is fed to the at least one operating fluid tank (15, 16) in a single filling action .

9. Filling system (1) according to any of claims 1 to 8, wherein at least one of the feeding ports (10, 11) comprises a shut-off unit adapted to automatically shut off a respective feeding port (10, 11) in the disconnected state, and auto^¬ matically release respective feeding port (10,11) in the connected state.

10. Hand-held equipment (14) comprising at least one operating fluid tank (15, 16) fluidly connected to a counter feeding port (20, 21) of a counter feeding adapter (19), which counter feeding adapter (19) is adapted to be coupled to a unique feeding adapter (2) of a filling system (1) according to any of claims 1 to 9 for feeding at least one operating fluid to the at least one operating fluid tank (15, 16) via the at least one counter feeding port (20, 21) .

11. Chainsaw (14) comprising at least one operating fluid tank (15, 16) fluidly connected to a counter feeding port (20, 21) of a counter feeding adapter (19), which counter feeding adapter (19) is adapted to be coupled to a unique feeding adapter (2) of a filling system (1) according to any of claims 1 to 9, and for feeding at least one operating fluid to the at least one operating fluid tank (15, 16) via the at least one counter feeding port (20, 21) .