CA2210539A1 - Ski run maintenance tool - Google Patents
Ski run maintenance toolInfo
- Publication number
- CA2210539A1 CA2210539A1 CA002210539A CA2210539A CA2210539A1 CA 2210539 A1 CA2210539 A1 CA 2210539A1 CA 002210539 A CA002210539 A CA 002210539A CA 2210539 A CA2210539 A CA 2210539A CA 2210539 A1 CA2210539 A1 CA 2210539A1
- Authority
- CA
- Canada
- Prior art keywords
- renovator
- teeth
- rake blade
- grooming device
- snow grooming
- 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.)
- Abandoned
Links
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
- E01H4/00—Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow
- E01H4/02—Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow for sporting purposes, e.g. preparation of ski trails; Construction of artificial surfacings for snow or ice sports ; Trails specially adapted for on-the-snow vehicles, e.g. devices adapted for ski-trails
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Lubricants (AREA)
- Beans For Foods Or Fodder (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
A ski run maintenance tool having a front-end moldboard and used to work and regenerate ski runs is improved to enable hard ski pistes to be worked in the simplest possible way. This is accomplished by equipping the lower back side of the moldboard (2) with rotatable renovator teeth (11) which can be pivoted through a setting device (13) from a ready position into a working position in which they cut into the base layer of the ski run.
Description
~- CA 02210~39 1997-07-1~
' A Snow Grooming Device The present invention refers to a snow grooming device pro-vided with a rake blade at the front end thereof. It is used for treating and conditioning skiing pistes. The rake blade is pivotably supported at the front of the snow grooming de-vice and flattens, displaces or removes the snow. Grooming devices, such cutter means, smooth rollers, etc., which ~ol-low said rake blade, prepare a smooth piste.
Although these devices proved to be useful in practice, they are in many cases incapable of treating very hard or icy pistes to a sufficient extent.
From dozers for cross-country skiing courses, which belong to a different class of device, a front-mounted device is already known, which includes a frame resting on a front slide and a rear slide, a cutter means being arranged be-tween said slides. This cutter means is provided for loosen-ing a hard cross-country skiing course in such a way that the cross-country skiing tracks can then be mapped out.
It is the object of the present invention to provide a snow grooming device of the type mentioned at the beginning, which permits the simplest possible treatment of hard ski-ing pistes. In accordance with the present invention, this object is achieved by the features of the main claim.
By means of the renovator teeth, hard and icy pistes can be broken up such that coarse clods are formed. These clods are crushed by the stud pins of the snow grooming device follow-ing the renovator teeth. The thus prepared piste can then be subjected to further treatment by the accessories attached to the rear end of the vehicle.
In view of the fact that the renovator teeth are pivotable, ~ CA 02210~39 1997-07-1~
~ ' the use of said renovator teeth can be controlled according to requirements. When the piste to be treated is a normal, soft piste, the renovator teeth are at the stand-by posi-tion; on sheets of ice, they can be pivoted to the operating position. While the rake blade is carrying out the snow-removing operation, the renovator teeth can simultaneously be used for treating the hard foundation of the piste on a lower level. Soft snow can be mixed with the loosened ice particles.
The renovator teeth can be adjusted to different levels by means of pivoting. By means of the control mode for the floating position, which is known for conventional rake blades, the ground can be treated down to an approximately constant level.
Preferably, a plurality of renovator teeth is arranged on a common shaft. It it thus possible to pivot the renovator teeth, which are distributed over the width of the vehicle, in common via said shaft.
According to a particularly advantageous embodiment, two shafts with renovator teeth can be provided on the rake blade, one shaft being arranged on each side of the lon-gitudinal axis of the snow grooming device. It is thus pos-sible to pivot the renovator teeth on the left and on the right side of the rake blade independently from one another so that the depth of treatment on one side can be deeper than that on the other side. This embodiment also proves to be particularly useful when the rake blade is positioned such that it extends at an oblique angle or during cornering of the snow grooming device.
The adjustment device can have one end connected to the rake blade and the other end to at least one of the renovator teeth. The shaft is thus directly pivoted via the actuation of one renovator tooth, which serves as a lever. The shaft CA 02210~39 1997-07-1 can also have arranged thereon a lever which is fixed to said shaft such that it is secured against rotation relative thereto and which is connected to the adjustment device.
It is suggested that the rake blade should have arranged thereon sliding elements which slide on the surface of the piste, at least at the operating position of the renovator teeth, for maintaining the rake blade at the floating posi-tion. These sliding elements may, for example, be slide plates.
In accordance with one variant of the present invention, the level and/or the inclination of the sliding elements on the rake blade is/are variable, whereby said sliding elements can be adapted to the respective profile of the piste. It is also possible to support the sliding elements on the rake blade such that they can be tilted thereon.
When the rake blade has an open U-shape, when seen in a top view, at least one sliding element can be provided behind each of the U-legs extending at an angle. The sliding ele-ments are, consequently, supported at a large distance from one another and this has the effect that the rake blade is supported on the surface of the piste in stable sliding con-tact therewith.
The renovator teeth are curved like a claw at the end thereof in the direction of movement. The renovator teeth can thus penetrate more easily into the piste foundation from the stand-by position when the snow grooming device is moving. The hard ground is first broken up by the projecting claw and then broken up further. The claw shape determines the suitable clod size and clod shape.
In accordance with a particularly advantageous embodiment, at least one defence blade can be arranged between the reno-vator teeth and the front of the snow grooming device. The ~ CA 02210~39 1997-07-1~
~ ' defence blade, which is arranged behind the renovator teeth above the ground, has the effect that broken-up, flung-up clods are thrown back onto the ground. In accordance with a special embodiment, the renovator teeth can be connected to a maximum-permissible-moment release means, which pivots them away from the operating position when a renovator tooth hits stones and rocks. The renovator tooth will then not be damaged but it will give way. When the obstacle has been passed, the renovator teeth can again be pivoted to a lower operating position.
One embodiment of the present invention is shown in the drawing and will be explained hereinbelow.
Fig. 1 shows a side view of the front part of a snow grooming device with a rake blade according to the present invention, one renovator tooth being shown in the operating position and another one in the stand-by position, and Fig. 2 shows a top view of a rake blade with renovator teeth and with two lateral, adjustable sliding elements.
Fig. 1 shows the front section of a snow grooming device 1, said front section having movably attached thereto a rake blade 2 via a conventional multiple-joint bearing 3. The rake blade 2 has all degrees of freedom of a conventional rake blade.
According to Fig. 2, the rake blade 2 comprises a shovel 4 having, when seen in a top view, a U-shaped structural de-sign. Said shovel consists of two U-legs 6 extending from the sides of a U-base 5 such that they form an angle in the direction of movement. At the front lower side of the rake blade 2, a lower edge 7 is provided, which may be implement-ed as a wavy edge over the width of the rake blade 2.
CA 022l0~39 l997-07-l~
At the lower rear side of the rake blade 2, two shafts 9 are arranged symmetrically to the longitudinal axis 8 of the ve-hicle, said shafts 9 being connected to the rake blade 2 via bearing blocks 10. Both shafts 9 project freely beyond the U-base 5 and extend over the area of the U-legs 6.
The shafts 9 have arranged thereon uniformly spaced renova-tor teeth 11, which are all arranged in a uniform sequence in the direction of said shafts such that they are in align-ment with one another. Each renovator tooth 11 has one of its ends attached to a shaft 9. In Fig. 1 a renovator tooth is shown at an approximately horizontal position (stand-by position) on the one hand, and at an approximately vertical position (fully extended operating position) on the other.
The renovator teeth 11 are steplessly adjustable between these two positions.
The free end of each renovator tooth 11 is curved like a claw, the curved side facing the ground at the stand-by position and having at the end thereof a tip 12 that is curved in the direction of movement.
Also a wedge-shaped element can, for example, be used as a renovator tooth 11.
One renovator tooth 11 of each shaft 9 has attached thereto a hydraulic cylinder/piston unit 13 as an adjustment device.
The other end of the cylinder/piston unit is supported in the upper area on the back of the rake blade 2.
At the rear of each of the U-legs 6 extending at an angle, a slide plate 14 is arranged as a sliding element, said slide plate 14 being rotatably supported on the U-leg 6 via two pivot bearings 15 and being secured in position on the rake blade 2 via a transverse lever 16. At the floating position of the rake blade, the slide plates 14 rest on the surface ~ CA 022l0~39 l997-07-l~
~ ' 17 of the piste.
In Fig. 1, it is shown how the renovator tooth 11, which is located at the vertical operating position, engages the piste leaving behind coarse clods 19 in the area between the renovator tooth and ahead of the chains 18 of the snow grooming device 1. The coarse clods 19 are crushed by said chains 18 whereby smaller pieces 20 are formed.
In the following, the mode of operation of the snow grooming device according to the present invention will be explained in detail. At first, the two shafts g with the renovator teeth 11 are located at the horizontal stand-by position.
The rake blade 2 is now lowered onto the surface 17 of the piste until the slide plates 14 rest on said surface 17 and until the lower edge 7 slightly penetrates into the surface of the piste 17 when the snow grooming device is moving. At this position, the rake blade 2 is operated at the floating position and slides on the surface 17 of the piste.
For breaking up hard or icy pistes, the renovator teeth 11 can be pivoted to a lower level and lowered into the pist via the cylinder/piston units 13. In this condition, they tear up the piste foundation on a lower level and leave coarse clods 19. The coarse clods are crushed by the stud pins of the chains 18 following said renovator teeth 11.
The piste prepared in this way is then subjected to a fin-ishing treatment with the aid of accessories, like snow cutter means, which are attached to the rear end of the vehicle.
' A Snow Grooming Device The present invention refers to a snow grooming device pro-vided with a rake blade at the front end thereof. It is used for treating and conditioning skiing pistes. The rake blade is pivotably supported at the front of the snow grooming de-vice and flattens, displaces or removes the snow. Grooming devices, such cutter means, smooth rollers, etc., which ~ol-low said rake blade, prepare a smooth piste.
Although these devices proved to be useful in practice, they are in many cases incapable of treating very hard or icy pistes to a sufficient extent.
From dozers for cross-country skiing courses, which belong to a different class of device, a front-mounted device is already known, which includes a frame resting on a front slide and a rear slide, a cutter means being arranged be-tween said slides. This cutter means is provided for loosen-ing a hard cross-country skiing course in such a way that the cross-country skiing tracks can then be mapped out.
It is the object of the present invention to provide a snow grooming device of the type mentioned at the beginning, which permits the simplest possible treatment of hard ski-ing pistes. In accordance with the present invention, this object is achieved by the features of the main claim.
By means of the renovator teeth, hard and icy pistes can be broken up such that coarse clods are formed. These clods are crushed by the stud pins of the snow grooming device follow-ing the renovator teeth. The thus prepared piste can then be subjected to further treatment by the accessories attached to the rear end of the vehicle.
In view of the fact that the renovator teeth are pivotable, ~ CA 02210~39 1997-07-1~
~ ' the use of said renovator teeth can be controlled according to requirements. When the piste to be treated is a normal, soft piste, the renovator teeth are at the stand-by posi-tion; on sheets of ice, they can be pivoted to the operating position. While the rake blade is carrying out the snow-removing operation, the renovator teeth can simultaneously be used for treating the hard foundation of the piste on a lower level. Soft snow can be mixed with the loosened ice particles.
The renovator teeth can be adjusted to different levels by means of pivoting. By means of the control mode for the floating position, which is known for conventional rake blades, the ground can be treated down to an approximately constant level.
Preferably, a plurality of renovator teeth is arranged on a common shaft. It it thus possible to pivot the renovator teeth, which are distributed over the width of the vehicle, in common via said shaft.
According to a particularly advantageous embodiment, two shafts with renovator teeth can be provided on the rake blade, one shaft being arranged on each side of the lon-gitudinal axis of the snow grooming device. It is thus pos-sible to pivot the renovator teeth on the left and on the right side of the rake blade independently from one another so that the depth of treatment on one side can be deeper than that on the other side. This embodiment also proves to be particularly useful when the rake blade is positioned such that it extends at an oblique angle or during cornering of the snow grooming device.
The adjustment device can have one end connected to the rake blade and the other end to at least one of the renovator teeth. The shaft is thus directly pivoted via the actuation of one renovator tooth, which serves as a lever. The shaft CA 02210~39 1997-07-1 can also have arranged thereon a lever which is fixed to said shaft such that it is secured against rotation relative thereto and which is connected to the adjustment device.
It is suggested that the rake blade should have arranged thereon sliding elements which slide on the surface of the piste, at least at the operating position of the renovator teeth, for maintaining the rake blade at the floating posi-tion. These sliding elements may, for example, be slide plates.
In accordance with one variant of the present invention, the level and/or the inclination of the sliding elements on the rake blade is/are variable, whereby said sliding elements can be adapted to the respective profile of the piste. It is also possible to support the sliding elements on the rake blade such that they can be tilted thereon.
When the rake blade has an open U-shape, when seen in a top view, at least one sliding element can be provided behind each of the U-legs extending at an angle. The sliding ele-ments are, consequently, supported at a large distance from one another and this has the effect that the rake blade is supported on the surface of the piste in stable sliding con-tact therewith.
The renovator teeth are curved like a claw at the end thereof in the direction of movement. The renovator teeth can thus penetrate more easily into the piste foundation from the stand-by position when the snow grooming device is moving. The hard ground is first broken up by the projecting claw and then broken up further. The claw shape determines the suitable clod size and clod shape.
In accordance with a particularly advantageous embodiment, at least one defence blade can be arranged between the reno-vator teeth and the front of the snow grooming device. The ~ CA 02210~39 1997-07-1~
~ ' defence blade, which is arranged behind the renovator teeth above the ground, has the effect that broken-up, flung-up clods are thrown back onto the ground. In accordance with a special embodiment, the renovator teeth can be connected to a maximum-permissible-moment release means, which pivots them away from the operating position when a renovator tooth hits stones and rocks. The renovator tooth will then not be damaged but it will give way. When the obstacle has been passed, the renovator teeth can again be pivoted to a lower operating position.
One embodiment of the present invention is shown in the drawing and will be explained hereinbelow.
Fig. 1 shows a side view of the front part of a snow grooming device with a rake blade according to the present invention, one renovator tooth being shown in the operating position and another one in the stand-by position, and Fig. 2 shows a top view of a rake blade with renovator teeth and with two lateral, adjustable sliding elements.
Fig. 1 shows the front section of a snow grooming device 1, said front section having movably attached thereto a rake blade 2 via a conventional multiple-joint bearing 3. The rake blade 2 has all degrees of freedom of a conventional rake blade.
According to Fig. 2, the rake blade 2 comprises a shovel 4 having, when seen in a top view, a U-shaped structural de-sign. Said shovel consists of two U-legs 6 extending from the sides of a U-base 5 such that they form an angle in the direction of movement. At the front lower side of the rake blade 2, a lower edge 7 is provided, which may be implement-ed as a wavy edge over the width of the rake blade 2.
CA 022l0~39 l997-07-l~
At the lower rear side of the rake blade 2, two shafts 9 are arranged symmetrically to the longitudinal axis 8 of the ve-hicle, said shafts 9 being connected to the rake blade 2 via bearing blocks 10. Both shafts 9 project freely beyond the U-base 5 and extend over the area of the U-legs 6.
The shafts 9 have arranged thereon uniformly spaced renova-tor teeth 11, which are all arranged in a uniform sequence in the direction of said shafts such that they are in align-ment with one another. Each renovator tooth 11 has one of its ends attached to a shaft 9. In Fig. 1 a renovator tooth is shown at an approximately horizontal position (stand-by position) on the one hand, and at an approximately vertical position (fully extended operating position) on the other.
The renovator teeth 11 are steplessly adjustable between these two positions.
The free end of each renovator tooth 11 is curved like a claw, the curved side facing the ground at the stand-by position and having at the end thereof a tip 12 that is curved in the direction of movement.
Also a wedge-shaped element can, for example, be used as a renovator tooth 11.
One renovator tooth 11 of each shaft 9 has attached thereto a hydraulic cylinder/piston unit 13 as an adjustment device.
The other end of the cylinder/piston unit is supported in the upper area on the back of the rake blade 2.
At the rear of each of the U-legs 6 extending at an angle, a slide plate 14 is arranged as a sliding element, said slide plate 14 being rotatably supported on the U-leg 6 via two pivot bearings 15 and being secured in position on the rake blade 2 via a transverse lever 16. At the floating position of the rake blade, the slide plates 14 rest on the surface ~ CA 022l0~39 l997-07-l~
~ ' 17 of the piste.
In Fig. 1, it is shown how the renovator tooth 11, which is located at the vertical operating position, engages the piste leaving behind coarse clods 19 in the area between the renovator tooth and ahead of the chains 18 of the snow grooming device 1. The coarse clods 19 are crushed by said chains 18 whereby smaller pieces 20 are formed.
In the following, the mode of operation of the snow grooming device according to the present invention will be explained in detail. At first, the two shafts g with the renovator teeth 11 are located at the horizontal stand-by position.
The rake blade 2 is now lowered onto the surface 17 of the piste until the slide plates 14 rest on said surface 17 and until the lower edge 7 slightly penetrates into the surface of the piste 17 when the snow grooming device is moving. At this position, the rake blade 2 is operated at the floating position and slides on the surface 17 of the piste.
For breaking up hard or icy pistes, the renovator teeth 11 can be pivoted to a lower level and lowered into the pist via the cylinder/piston units 13. In this condition, they tear up the piste foundation on a lower level and leave coarse clods 19. The coarse clods are crushed by the stud pins of the chains 18 following said renovator teeth 11.
The piste prepared in this way is then subjected to a fin-ishing treatment with the aid of accessories, like snow cutter means, which are attached to the rear end of the vehicle.
Claims (8)
1. A snow grooming device (1) provided with a rake blade (2) at the front end thereof, characterized in that renovator teeth (11) are rotatably arranged on the lower rear side of the rake blade (2), said renovator teeth (11) being adapted to be pivoted via an adjustment device (13) from a stand-by position to an operating position at which they engage the piste foundation.
2. A snow grooming device according to claim 1, characterized in that a plurality of renovator teeth (11) is supported on a common shaft (9) on said rake blade.
3. A snow grooming device according to claim 1 or 2, characterized in that at least two shafts (9) with renovator teeth (11) are provided on said rake blade (2), one shaft (9) being arranged on each side of the longitudinal axis (8) of the snow grooming device (1).
4. A snow grooming device according to claim 2 or 3, characterized in that, when seen in a top view, the rake blade (2) has an approximately U-shaped structural design, said U being open in the direction of movement and said shaft(s) (9) being supported on the U-base (5) and extending also laterally beyond the U-legs which extend at an angle.
5. A snow grooming device according to claim 3 or 4, characterized in that each shaft (9) is adapted to be pivoted via a separate ad-justment device (13) having preferably one end connected to the rake blade (2) and the other end to at least one of the renovator teeth (11).
6. A snow grooming device according to one of the preceding claims, characterized in that the rake blade (2) has arranged thereon sliding elements (14) which slide on the surface (17) of the piste, at least at the operating position of the renovator teeth (11), and which are preferably provided behind each of the U-legs extending at an angle.
7. A snow grooming device according to claim 6, characterized in that the level and/or the inclination of the sliding elements (14) on the rake blade (2) is/are variable.
8. A snow grooming device according to one of the preceding claims, characterized in that the renovator teeth (11) are curved like a claw at the end thereof, the curvature extending approximately in the direction of movement at the operating position of said renovator teeth (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29500818U DE29500818U1 (en) | 1995-01-19 | 1995-01-19 | Snow groomer |
| DE29500818.0 | 1995-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2210539A1 true CA2210539A1 (en) | 1996-07-25 |
Family
ID=8002702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002210539A Abandoned CA2210539A1 (en) | 1995-01-19 | 1995-10-27 | Ski run maintenance tool |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0804650B1 (en) |
| AT (1) | ATE182643T1 (en) |
| CA (1) | CA2210539A1 (en) |
| DE (3) | DE29500818U1 (en) |
| WO (1) | WO1996022425A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8312649B2 (en) | 2007-09-14 | 2012-11-20 | Rolic Invest Sarl | Rotary snow tiller for grooming ski slopes and relative operating method |
| US9920496B2 (en) | 2013-12-20 | 2018-03-20 | Kaessbohrer Gelaendefahrzeug Ag | Piste grooming vehicle and clearing blade for a piste grooming vehicle of this type |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29723018U1 (en) | 1997-12-31 | 1999-04-29 | Kässbohrer Geländefahrzeug AG, 89250 Senden | Snow groomer |
| CA2256172A1 (en) * | 1998-12-15 | 2000-06-15 | Bombardier Inc. | Multifunction joystick |
| DE102005050629A1 (en) * | 2005-10-21 | 2007-04-26 | Bomag Gmbh | Heck finisher and method for smoothing a terrain surface |
| DE102006057272B4 (en) * | 2006-11-23 | 2011-11-10 | Kässbohrer Geländefahrzeug AG | Piste grooming device for a motor vehicle, in particular a tracked vehicle |
| IT1401157B1 (en) | 2010-07-28 | 2013-07-12 | Rolic Invest Sarl | METHOD OF TREATMENT OF THE SNOWY COAT OF SKI SLOPES AND EQUIPMENT TO IMPLEMENT THIS METHOD |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH486896A (en) * | 1968-11-14 | 1970-03-15 | Kahlbacher Anton | Hump cutting device for the maintenance of ski slopes |
| US3685404A (en) * | 1970-07-24 | 1972-08-22 | Thiokol Chemical Corp | Multi-way snow grooming apparatus for ski slopes |
| CH571350A5 (en) * | 1974-05-04 | 1976-01-15 | Schmidt Alfred Ing Gmbh | |
| CH574255A5 (en) * | 1974-08-28 | 1976-04-15 | Baechler Anton R | |
| US4346928A (en) * | 1978-02-03 | 1982-08-31 | Towsend Marvin S | Snow plow attachment |
| CH633450A5 (en) * | 1978-11-24 | 1982-12-15 | Kempf & Co Ag | DEVICE FOR PREPARING SNOW SLOPES. |
| US4306362A (en) * | 1980-05-12 | 1981-12-22 | Valley Engineering, Inc. | Blade assembly |
| US4462172A (en) * | 1982-09-29 | 1984-07-31 | Valley Engineering, Inc. | Quick disconnect blade tool mounting apparatus |
| DE3438714A1 (en) * | 1984-10-23 | 1986-04-24 | Horst 8580 Bayreuth Gorny | Cross-country skiing course device which can be converted to a double-tyre roller |
| FR2650316B1 (en) * | 1989-07-27 | 1991-11-22 | Blandin Yves | METHOD AND MACHINE FOR THE CONSTRUCTION OF ROAD EMBANKMENTS AND THE LIKE THAT PUSHES MATERIALS AND TRUCKS AND SCARIFIES |
| CA2122850A1 (en) * | 1993-05-06 | 1994-11-07 | Anton R. Bachler | Grading apparatus for front mounting to the attachment frame of a drive vehicle |
-
1995
- 1995-01-19 DE DE29500818U patent/DE29500818U1/en not_active Expired - Lifetime
- 1995-10-27 DE DE59506493T patent/DE59506493D1/en not_active Expired - Fee Related
- 1995-10-27 AT AT95937022T patent/ATE182643T1/en not_active IP Right Cessation
- 1995-10-27 WO PCT/EP1995/004233 patent/WO1996022425A1/en active IP Right Grant
- 1995-10-27 CA CA002210539A patent/CA2210539A1/en not_active Abandoned
- 1995-10-27 EP EP95937022A patent/EP0804650B1/en not_active Expired - Lifetime
-
1996
- 1996-01-19 DE DE29600905U patent/DE29600905U1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8312649B2 (en) | 2007-09-14 | 2012-11-20 | Rolic Invest Sarl | Rotary snow tiller for grooming ski slopes and relative operating method |
| US9920496B2 (en) | 2013-12-20 | 2018-03-20 | Kaessbohrer Gelaendefahrzeug Ag | Piste grooming vehicle and clearing blade for a piste grooming vehicle of this type |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0804650A1 (en) | 1997-11-05 |
| DE29500818U1 (en) | 1995-03-02 |
| DE29600905U1 (en) | 1996-05-15 |
| DE59506493D1 (en) | 1999-09-02 |
| WO1996022425A1 (en) | 1996-07-25 |
| EP0804650B1 (en) | 1999-07-28 |
| ATE182643T1 (en) | 1999-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |