EP2937464A1 - Snow sledge - Google Patents
Snow sledge Download PDFInfo
- Publication number
- EP2937464A1 EP2937464A1 EP14165940.9A EP14165940A EP2937464A1 EP 2937464 A1 EP2937464 A1 EP 2937464A1 EP 14165940 A EP14165940 A EP 14165940A EP 2937464 A1 EP2937464 A1 EP 2937464A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- snow
- sledge
- front edge
- receptacle
- skis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/02—Hand implements
Definitions
- This invention relates to a snow sledge (occasionally referred to as a snow pusher, and more specifically, to a snow sledge which is used manually by a user via a handle of the snow sledge.
- a snow sledge (occasionally referred to as a snow pusher, and more specifically, to a snow sledge which is used manually by a user via a handle of the snow sledge.
- a snow sledge having a forwardly open receptacle with a bottom, side walls and a back wall for receiving and containing snow received over a front edge of the bottom.
- the snow sledge comprises a handle which the user utilizes for pushing the snow sledge forward during use, such that the outer surface of the bottom slides along the ground and snow on the ground enters the receptacle over the front edge of the bottom.
- a snow sledge as described above works excellent when the conditions are optimal. In that case a hard layer of snow or ice covering the ground contacts the outer surface of the bottom and ensures that the friction is sufficiently low for a user to push the snow sledge.
- An object of the present invention is to solve the above mentioned drawback and to provide a snow sledge which is more wear resistant and comfortable to use also in difficult conditions. This and other objects of are obtained with a snow sledge according to independent claim 1.
- a snow sledge comprising at least a first and a second detachable elongated ski extending along the outer surface of the bottom makes the snow sledge more comfortable to use and improves its wear resistance.
- the material of the detachable skis may be selected independently of the material of the receptacle in order to ensure that a user friendly friction is obtained in all conditions. Additionally, once the skis wear out, they can easily be replaced without needing to replace the entire receptacle or snow sledge.
- Figures 1 and 2 illustrate a first embodiment of a snow sledge 1.
- Figure 1 illustrates a side view of the snow sledge 1
- Figure 2 illustrates a bottom view of the snow sledge 1.
- the snow sledge 1 comprises a forwardly open receptacle 2 with a bottom 3, side walls 4 and a back wall 5.
- a handle 6 protrudes upwards from the receptacle 2 to a height suitable for a user to grab the handle 6 with his hands in order to manually use the snow sledge 1 for removing snow from the ground. During such use snow enters the receptacle 2 over the front edge 7 of the bottom 3.
- the illustrated snow sledge 1 comprises a first 8 and a second 9 elongated ski which extend along the outer surface of the bottom 3 in a direction from the front edge 7 towards the back wall 5. These skis are detachably attached to the receptacle 2. In the illustrated example it is by way of example assumed that this attachment is carried out with screws 10 and nuts 11, however, in other implementations other ways of attaching the skis may exist. In any case, due to the detachable attachment, the first 8 and second 9 ski may be detached and removed from the receptacle 2 in order to utilize the show sledge without skis, or alternatively, in order to replace the present skis with new skis. Such replacement may be necessary if the skis have been worn out.
- the outer surface of the bottom is provided with one or more grooves 12 and the first 8 and second 9 ski are partially embedded into the one or more grooves 12.
- Partially embedded refers to a solution, where the skis are thicker than the depth of the grooves, such that the skis at least partly protrude out of the grooves and beyond the outer surface of the bottom 3 of the receptacle 2.
- the skis may protrude about 5 - 8 mm beyond the outer surface of the bottom. In this way it can be ensured that when the snow sledge 1 slides along the ground, it is the surface of the skis that contacts the ground instead of the outer surface of the receptacle as in prior art snow sledges.
- Suitable mutual dimensioning of the width of the grooves and the width of the skis ensures that the sides of the skis are supported by the sides walls of the grooves, such that the skis are very firmly and rigidly attached to the receptacle 2.
- a suitable width for the skis is about 5 - 10 cm.
- the grooves 12 in combination with the partially embedded skis makes the bottom 3 of the receptacle 2 more stiff, which is an advantage when heavy snow loads are handled with the snow sledge.
- the bottom 3 of the receptacle has a generally flat portion 13 adjacent to the front edge 7. Curved portions 14 of the bottom adjoin the flat portion 13 to the side walls 4 and to the back wall 5 of the receptacle.
- the skis need to have a shape that matches the shape of the bottom 3. Consequently, the first 8 and second 9 ski are provided with a flat front portion and curved rear portions, which confirms to the shape of the outer surface of the bottom.
- first 8 and second skis 9 are provided with one or more longitudinal slits 15 in a bottom surface of the skis.
- Such slits are not necessary in all embodiments, but may be useful in order to assist the user in controlling the snow sledge such that the snow sledge proceeds straight forward when the user manually pushes the snow sledge 1 via the handle 6.
- a metal reinforcement bar 16 extends substantially along the entire length of the front edge 7. Small gaps may be provided between the front edge 7 and the metal reinforcement bar 16 on the bottom side of the receptacle at the locations of the skis. In that case the first 8 and second ski 9 may be shaped and dimensioned to protrude into these gaps. Such a solution enhances the attachment of the skis to the receptacle by mechanically locking the front end of the skis in a space between the bottom 3 of the receptacle and the metal reinforcement bar 16.
- the reinforcement bar 16 is provided with first 17 and second 18 end pieces extending upwards from the front edge 7 at the opposite ends of the front edge 7.
- the metallic reinforcement bar 16 may be bent upwards at its opposite ends to obtain the first 17 and second 18 end piece, in which case the reinforcement bar 16 will be generally U-shaped.
- An advantage obtained with the first 17 and second 18 end piece, is that these, preferably metallic and sharp pieces cut snow very efficiently. Due to this a very nice looking and clean cut is obtained in the snow when the snow sledge is used for removing snow.
- the handle 6 consists of an elongated part having a plurality of adjoining sections 19 which extend in different directions.
- the handle 6 may be manufactured of once single metallic piece, such as a pipe, that is bent at suitable locations in order to obtain the desired shape.
- the handle 6 is shaped in such a way that the first 20 and second 21 end of the handle 6 are attached to the first 17 and second 18 end piece of the reinforcement bar 16.
- the material of the receptacle may be polypropylene (PP), for instance.
- the skis may also be of polypropylene, or alternatively of Polyoxymethylene (POM), for instance, which is a relatively slippery material having excellent wear resistance properties.
- POM Polyoxymethylene
- Figures 3 and 4 illustrate a second embodiment of a snow sledge.
- the snow sledge of Figures 3 and 4 is very similar to the one explained in connection with Figures 1 and 2 . Therefore the embodiment of Figures 3 and 4 are mainly explained by pointing out the differences between these embodiments.
- Figures 3 and 4 illustrate only the receptacle 2 of the snow sledge without the handle.
- a soft cover 22' has been added to cover at least the lower surface of the metallic reinforcement bar 16.
- the soft cover 22' may be manufactured of the same material as the skis, for instance, or alternatively of another soft and wear resistant material.
- the soft cover 22' is detachable, such that it may be removed from the snow sledge if the user so prefers. This may be achieved by attaching the soft cover to the snow sledge with screws, for instance.
- An advantage obtained by utilizing a soft cover 22' at least on the lower surface of the reinforcement bar 16 is that this soft cover 22' prevents unintentional contact between the reinforcement bar 16 and the surface below the layer of snow which is being removed with the snow sledge. This is a significant advantage when utilizing the snow sledge in locations where damages could otherwise occur, such as on metal-sheeted roofs or wooden terraces. Additionally, the soft cover 22' also improves the use of the show sledge in difficult conditions in the same way as the first 8 and second ski 9, in other words by lowering the friction and improving the wear resistance, as has been explained previously.
- the soft cover 22' may be practical to implement the soft cover 22' as illustrated in Figures 3 and 4 , where the generally U-shaped soft cover 22' surrounds the reinforcement bar from three sides, from the lower side, front side and upper side.
- the attachment of the soft cover 22' may be implemented as a snap attachment, where the elasticity and stiffness of the U-shaped soft cover ensures that a protruding part of the soft cover 22' enters a cavity in the receptacle 2 or in the reinforcement bar 16 once the soft cover is pushed into the correct location illustrated in the figures. In that case no attachment screws are needed.
Abstract
Description
- This invention relates to a snow sledge (occasionally referred to as a snow pusher, and more specifically, to a snow sledge which is used manually by a user via a handle of the snow sledge.
- Previously there is known a snow sledge having a forwardly open receptacle with a bottom, side walls and a back wall for receiving and containing snow received over a front edge of the bottom. The snow sledge comprises a handle which the user utilizes for pushing the snow sledge forward during use, such that the outer surface of the bottom slides along the ground and snow on the ground enters the receptacle over the front edge of the bottom.
- A snow sledge as described above works excellent when the conditions are optimal. In that case a hard layer of snow or ice covering the ground contacts the outer surface of the bottom and ensures that the friction is sufficiently low for a user to push the snow sledge.
- Unfortunately the conditions are in practice often far from optimal. Occasionally, during difficult conditions there is no continuous hard layer of snow or ice under the soft layer of snow which needs to be removed with the snow sledge. Instead the outer surface of the bottom may come into contact with sand, asphalt, concrete or whatever the material of the ground under the soft layer of snow happens to be. In that case it is very heavy for the user to push the snow sledge due to friction between the outer surface of the bottom and the ground. Additionally, use of the snow sledge in such difficult conditions causes scratches in the outer surface of the bottom, which eventually wears out the bottom of the snow sledge.
- An object of the present invention is to solve the above mentioned drawback and to provide a snow sledge which is more wear resistant and comfortable to use also in difficult conditions. This and other objects of are obtained with a snow sledge according to
independent claim 1. - The use of a snow sledge comprising at least a first and a second detachable elongated ski extending along the outer surface of the bottom makes the snow sledge more comfortable to use and improves its wear resistance. The material of the detachable skis may be selected independently of the material of the receptacle in order to ensure that a user friendly friction is obtained in all conditions. Additionally, once the skis wear out, they can easily be replaced without needing to replace the entire receptacle or snow sledge.
- Preferred embodiments of the invention are disclosed in the dependent claims.
- In the following the present invention will be described in closer detail by way of example and with reference to the attached drawings, in which
-
Figures 1 and 2 illustrate a first embodiment of a snow sledge, and -
Figures 3 and 4 illustrate a second embodiment of a snow sledge. -
Figures 1 and 2 illustrate a first embodiment of asnow sledge 1.Figure 1 illustrates a side view of thesnow sledge 1, andFigure 2 illustrates a bottom view of thesnow sledge 1. - The
snow sledge 1 comprises a forwardlyopen receptacle 2 with abottom 3,side walls 4 and aback wall 5. Ahandle 6 protrudes upwards from thereceptacle 2 to a height suitable for a user to grab thehandle 6 with his hands in order to manually use thesnow sledge 1 for removing snow from the ground. During such use snow enters thereceptacle 2 over thefront edge 7 of thebottom 3. - The illustrated
snow sledge 1 comprises a first 8 and a second 9 elongated ski which extend along the outer surface of thebottom 3 in a direction from thefront edge 7 towards theback wall 5. These skis are detachably attached to thereceptacle 2. In the illustrated example it is by way of example assumed that this attachment is carried out withscrews 10 andnuts 11, however, in other implementations other ways of attaching the skis may exist. In any case, due to the detachable attachment, the first 8 and second 9 ski may be detached and removed from thereceptacle 2 in order to utilize the show sledge without skis, or alternatively, in order to replace the present skis with new skis. Such replacement may be necessary if the skis have been worn out. - In the illustrated embodiment the outer surface of the bottom is provided with one or
more grooves 12 and the first 8 and second 9 ski are partially embedded into the one ormore grooves 12. Partially embedded refers to a solution, where the skis are thicker than the depth of the grooves, such that the skis at least partly protrude out of the grooves and beyond the outer surface of thebottom 3 of thereceptacle 2. The skis may protrude about 5 - 8 mm beyond the outer surface of the bottom. In this way it can be ensured that when the snow sledge 1 slides along the ground, it is the surface of the skis that contacts the ground instead of the outer surface of the receptacle as in prior art snow sledges. Suitable mutual dimensioning of the width of the grooves and the width of the skis ensures that the sides of the skis are supported by the sides walls of the grooves, such that the skis are very firmly and rigidly attached to thereceptacle 2. A suitable width for the skis is about 5 - 10 cm. Additionally, thegrooves 12 in combination with the partially embedded skis makes thebottom 3 of thereceptacle 2 more stiff, which is an advantage when heavy snow loads are handled with the snow sledge. - As best seen in
Figure 2 , thebottom 3 of the receptacle has a generallyflat portion 13 adjacent to thefront edge 7. Curvedportions 14 of the bottom adjoin theflat portion 13 to theside walls 4 and to theback wall 5 of the receptacle. In order to obtain skis well suited for use with such a receptacle, the skis need to have a shape that matches the shape of thebottom 3. Consequently, the first 8 and second 9 ski are provided with a flat front portion and curved rear portions, which confirms to the shape of the outer surface of the bottom. - From
Figure 2 it can be seen that the first 8 andsecond skis 9 are provided with one or morelongitudinal slits 15 in a bottom surface of the skis. Such slits are not necessary in all embodiments, but may be useful in order to assist the user in controlling the snow sledge such that the snow sledge proceeds straight forward when the user manually pushes thesnow sledge 1 via thehandle 6. - In order to ensure that the
front edge 7 of thesnow sledge 1 is sufficiently stiff and wear resistant, ametal reinforcement bar 16 extends substantially along the entire length of thefront edge 7. Small gaps may be provided between thefront edge 7 and themetal reinforcement bar 16 on the bottom side of the receptacle at the locations of the skis. In that case the first 8 andsecond ski 9 may be shaped and dimensioned to protrude into these gaps. Such a solution enhances the attachment of the skis to the receptacle by mechanically locking the front end of the skis in a space between thebottom 3 of the receptacle and themetal reinforcement bar 16. - In the illustrated example the
reinforcement bar 16 is provided with first 17 and second 18 end pieces extending upwards from thefront edge 7 at the opposite ends of thefront edge 7. In practice, themetallic reinforcement bar 16 may be bent upwards at its opposite ends to obtain the first 17 and second 18 end piece, in which case thereinforcement bar 16 will be generally U-shaped. An advantage obtained with the first 17 and second 18 end piece, is that these, preferably metallic and sharp pieces cut snow very efficiently. Due to this a very nice looking and clean cut is obtained in the snow when the snow sledge is used for removing snow. - In the illustrated example the
handle 6 consists of an elongated part having a plurality of adjoiningsections 19 which extend in different directions. In practice thehandle 6 may be manufactured of once single metallic piece, such as a pipe, that is bent at suitable locations in order to obtain the desired shape. In the illustrated embodiment thehandle 6 is shaped in such a way that the first 20 and second 21 end of thehandle 6 are attached to the first 17 and second 18 end piece of thereinforcement bar 16. An advantage with such a solution is that the force directed by the user to thehandle 6 is very efficiently conducted to thereinforcement bar 16 with a minimum of elasticity between these parts. Consequently, if the user scrapes ice on the ground with thereinforcement bar 16, a maximum force can easily be conducted from thehandle 6 to thereinforcement bar 16. - The material of the receptacle may be polypropylene (PP), for instance. The skis may also be of polypropylene, or alternatively of Polyoxymethylene (POM), for instance, which is a relatively slippery material having excellent wear resistance properties.
-
Figures 3 and 4 illustrate a second embodiment of a snow sledge. The snow sledge ofFigures 3 and 4 is very similar to the one explained in connection withFigures 1 and 2 . Therefore the embodiment ofFigures 3 and 4 are mainly explained by pointing out the differences between these embodiments. - For simplicity,
Figures 3 and 4 illustrate only thereceptacle 2 of the snow sledge without the handle. In the illustrated embodiment, a soft cover 22' has been added to cover at least the lower surface of themetallic reinforcement bar 16. The soft cover 22' may be manufactured of the same material as the skis, for instance, or alternatively of another soft and wear resistant material. Preferably the soft cover 22' is detachable, such that it may be removed from the snow sledge if the user so prefers. This may be achieved by attaching the soft cover to the snow sledge with screws, for instance. - An advantage obtained by utilizing a soft cover 22' at least on the lower surface of the
reinforcement bar 16 is that this soft cover 22' prevents unintentional contact between thereinforcement bar 16 and the surface below the layer of snow which is being removed with the snow sledge. This is a significant advantage when utilizing the snow sledge in locations where damages could otherwise occur, such as on metal-sheeted roofs or wooden terraces. Additionally, the soft cover 22' also improves the use of the show sledge in difficult conditions in the same way as the first 8 andsecond ski 9, in other words by lowering the friction and improving the wear resistance, as has been explained previously. - Though it is sufficient to arrange the soft cover 22' to cover the lower surface of the reinforcement bar, it may be practical to implement the soft cover 22' as illustrated in
Figures 3 and 4 , where the generally U-shaped soft cover 22' surrounds the reinforcement bar from three sides, from the lower side, front side and upper side. In such an embodiment the attachment of the soft cover 22' may be implemented as a snap attachment, where the elasticity and stiffness of the U-shaped soft cover ensures that a protruding part of the soft cover 22' enters a cavity in thereceptacle 2 or in thereinforcement bar 16 once the soft cover is pushed into the correct location illustrated in the figures. In that case no attachment screws are needed. - It is to be understood that the above description and the accompanying figures are only intended to illustrate the present invention. It will be obvious to a person skilled in the art that the invention can be varied and modified without departing from the scope of the invention.
Claims (8)
- A snow sledge (1), comprising:a forwardly open receptacle (2) with a bottom (3), side walls (4) and a back wall (5) for receiving and containing snow received over a front edge (7) of the bottom, anda handle (6) protruding upwards from the receptacle (2), characterized in thatthe show sledge (1) comprises at least a first and a second elongated ski (8, 9) extending along an outer surface of the bottom (3) in a direction from the front edge (7) towards the back wall (5),the at least first and second elongated skis (8, 9) are detachably attached to the receptacle (2), andthe at least first and second elongated skis (8, 9) protrude outwards from the outer surface of the the bottom (3).
- The show sledge according to claim 1, wherein
the outer surface of the bottom (3) is provided with one or more grooves (12), and the first and second elongated skis (8, 9) are partially embedded in the one or more grooves (12). - The show sledge according to claim 1 or 2, wherein
the bottom (3) of the receptacle (2) has a generally flat portion (13) adjacent to the front edge (7), and curved portions (14) which adjoin the flat portion (13) to the side walls (4) and to the back wall (5), and
the at least first and second elongated skis (8, 9) are provided with flat front portions and curved rear portions for confirming to the shape of the outer surface of the bottom (3). - The snow sledge according to one of claims 1 to 3, wherein
at least one of the first and second ski (8, 9) is provided with one or more longitudinal slots (15) in a bottom surface of the first and second ski (8, 9) respectively. - The snow sledge according to one of claims 1 to 4, wherein the front edge (7) of the bottom comprises a metal reinforcement bar (16) extending substantially along the entire length of the front edge.
- The snow sledge according to one of claims 1 to 5, wherein the metal reinforcement bar (16) comprises a first and a second end piece (17, 18) extending upwards from the front edge (7) at the opposite ends of the front edge to provide a generally U-shaped reinforcement bar (16).
- The snow sledge according to one of claims 5 to 6, wherein at least a lower surface of the reinforcement bar (16) is covered by a soft cover (22').
- The snow sledge according to one of claims 6 to 7, wherein
the handle (6) consists of an elongated part having a plurality of adjoining sections (19) extending in different directions, and
a first and a second end (20, 21) of the handle are attached to the first and second end piece (17, 18), respectively.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14165940T PL2937464T3 (en) | 2014-04-25 | 2014-04-25 | Snow sledge |
EP14165940.9A EP2937464B1 (en) | 2014-04-25 | 2014-04-25 | Snow sledge |
RU2015115060A RU2651295C2 (en) | 2014-04-25 | 2015-04-22 | Snow sledge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14165940.9A EP2937464B1 (en) | 2014-04-25 | 2014-04-25 | Snow sledge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2937464A1 true EP2937464A1 (en) | 2015-10-28 |
EP2937464B1 EP2937464B1 (en) | 2017-05-31 |
Family
ID=50542942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14165940.9A Not-in-force EP2937464B1 (en) | 2014-04-25 | 2014-04-25 | Snow sledge |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2937464B1 (en) |
PL (1) | PL2937464T3 (en) |
RU (1) | RU2651295C2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US258260A (en) * | 1882-05-23 | Snow-shovel | ||
US1678135A (en) * | 1926-01-21 | 1928-07-24 | G A Crosman & Sons Co | Snow scoop or shovel |
US4248466A (en) * | 1978-11-13 | 1981-02-03 | Carper William B | Snow scoop with wear strip along lip and method of attaching the wear strip in a blow molding process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1766691A (en) * | 1927-12-08 | 1930-06-24 | Frank D Rugg | Shovel |
US3380772A (en) * | 1966-09-23 | 1968-04-30 | Lissakers Axel | Scoop shovel |
RU2253205C2 (en) * | 2003-06-04 | 2005-06-10 | Закрытое акционерное общество "Фискарс Бранд Рус" | Spade and working tool for spade |
RU76926U1 (en) * | 2008-06-02 | 2008-10-10 | Владимир Сергеевич Копырин | SNOW CLEANING DEVICE |
RU111504U1 (en) * | 2011-08-05 | 2011-12-20 | Открытое акционерное общество "Пластик" | Sledges for children |
-
2014
- 2014-04-25 EP EP14165940.9A patent/EP2937464B1/en not_active Not-in-force
- 2014-04-25 PL PL14165940T patent/PL2937464T3/en unknown
-
2015
- 2015-04-22 RU RU2015115060A patent/RU2651295C2/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US258260A (en) * | 1882-05-23 | Snow-shovel | ||
US1678135A (en) * | 1926-01-21 | 1928-07-24 | G A Crosman & Sons Co | Snow scoop or shovel |
US4248466A (en) * | 1978-11-13 | 1981-02-03 | Carper William B | Snow scoop with wear strip along lip and method of attaching the wear strip in a blow molding process |
Also Published As
Publication number | Publication date |
---|---|
RU2015115060A (en) | 2016-11-10 |
RU2651295C2 (en) | 2018-04-19 |
EP2937464B1 (en) | 2017-05-31 |
PL2937464T3 (en) | 2017-09-29 |
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