WO2009034185A1 - Rotary snow tiller for grooming ski slopes - Google Patents

Rotary snow tiller for grooming ski slopes Download PDF

Info

Publication number
WO2009034185A1
WO2009034185A1 PCT/EP2008/062211 EP2008062211W WO2009034185A1 WO 2009034185 A1 WO2009034185 A1 WO 2009034185A1 EP 2008062211 W EP2008062211 W EP 2008062211W WO 2009034185 A1 WO2009034185 A1 WO 2009034185A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
rotary snow
snow tiller
adjusting device
frame
Prior art date
Application number
PCT/EP2008/062211
Other languages
French (fr)
Inventor
Klaus Wagger
Jan Müller
Original Assignee
Rolic Invest Sarl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rolic Invest Sarl filed Critical Rolic Invest Sarl
Priority to EP08804172.8A priority Critical patent/EP2201178B1/en
Publication of WO2009034185A1 publication Critical patent/WO2009034185A1/en

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

Definitions

  • the present invention relates to a rotary snow tiller for grooming ski slopes.
  • a rotary snow tiller for grooming ski slopes normally advances in a travelling direction, and comprises a frame; a shaft rotating about a first axis transverse to the travelling direction, and having teeth for breaking up the snow surface; and a protective casing surrounding the shaft.
  • a rotary snow tiller for grooming the snow surface of ski slopes and designed to advance in a travelling direction
  • the rotary snow tiller comprising a frame; a shaft rotating about a first axis transverse to the travelling direction, and having teeth for breaking up the snow surface; and a protective casing surrounding the shaft;
  • the rotary snow tiller being characterized by comprising an adjusting device for selectively adjusting the position of the shaft with respect to the frame.
  • Figure 1 shows a partly schematic side view, with parts removed for clarity, of a rotary snow tiller, for grooming ski slopes, in accordance with the present invention
  • Figure 2 shows a perspective view, with parts removed for clarity, of a variation of the Figure 1 rotary snow tiller.
  • rotary snow tiller 1 provides for tilling a surface layer of snow surface M of ski slopes, and comprises a frame 2; a shaft 3 mounted to rotate with respect to frame 2 about an axis Al, and extending transverse to travelling direction D; a protective casing 4 surrounding shaft 3; a normally flexible finish mat 5 which is connected to casing 4, extends behind shaft 3, and is drawn over the surface of the tilled snow surface M; and an adjusting device 6 for adjusting the position of shaft 3 with respect to frame 2 and casing 4.
  • Frame 2 comprises a bar 7 parallel to axis Al; a hitch device 8 fixed to bar 7 and for connecting rotary snow tiller 1 to the snow groomer vehicle (not shown in the drawings) ; two arc-shaped segments 9 fixed to and transverse to bar 7; and two supporting bars 10 (only one shown in Figure 1) for supporting shaft 3.
  • Rotary snow tiller 1 comprises two adjustable panels 11 which have the purpose to protect casing 4 and finish mat 5 from the snow thrown up by the groomer vehicle not shown in the drawings.
  • Shaft 3 comprises a number of teeth 12 equally spaced about and along axis Al, and each of which projects radially from shaft 3 to penetrate snow surface M.
  • Adjusting device 6 comprises two slides 13 (only one shown in Figure 1), each connected in sliding manner to a respective supporting bar 10; two further supporting bars 14, each arranged transverse to supporting bars 10 and engaging in sliding manner a respective slide 13; and two blocks 15, each fitted to the end of a respective supporting bar 14 and connected in rotary manner to a respective end of shaft 3.
  • one of blocks 15 supports a hydraulic motor 16 for rotating shaft 3 about axis Al.
  • Each slide 13 is connected to respective supporting bar 10 by an actuator 17 - which, in the Figure 1 example, is a double-acting hydraulic cylinder - and is connected to the respective further supporting bar 14 by a further actuator 18 - which, in the Figure 1 example, is also a double-acting hydraulic cylinder.
  • rotary snow tiller 1 tills a surface layer of snow surface M by hydraulic motor 16 rotating shaft 3.
  • the depth of the tilled surface layer of snow surface M depends on the position of teeth 12 and shaft 3 with respect to snow surface M.
  • Adjusting device 6 provides for adjusting the tilling depth, without altering the position of frame 2 and casing 4, by simply activating actuators 18.
  • actuators 17 moves shaft 3 in a direction parallel to travelling direction D, and provides for increasing or reducing recirculation of the tilled snow between casing 4 and shaft 3 for a given tilling depth.
  • adjusting device 6 is replaced by an adjusting device 19, and supporting bars
  • Adjusting device 19 comprises two supporting plates 20 movable with respect to frame 2; and two arms 21 mounted to rotate with respect to frame 2 about an axis A2 parallel to axis Al.
  • Each arm 21 supports a respective supporting plate
  • actuator 22 is a double-acting hydraulic cylinder.
  • Supporting plate 20 is mounted to slide along arm
  • arm 21 engages a guide 23 formed in supporting plate 20, which is movable selectively with respect to arm 21 by an actuator 24 which, in the Figure 2 example, is a double-acting hydraulic cylinder connected to arm 21 and to supporting plate 20.
  • Figure 2 only shows one supporting plate 20, one arm 21, one actuator 22, one guide 23, and one actuator
  • a hydraulic motor 25 is connected to shaft 3 and fixed to one of supporting plates 20 to rotate shaft 3 about respective axis Al.
  • adjusting device 19 provides for adjusting the tilling depth, and for adjusting the position of shaft 3 in a direction parallel to travelling direction D, to reduce the distance between shaft 3 and casing 4 on the inlet side, depending on the rotation direction of shaft 3.
  • shaft 3 can be moved forward or back, for a given tilling depth of snow surface M, to adjust the distance between shaft 3 and casing 4 and so adjust the amount of snow recirculated between casing 4 and shaft 3.
  • This adjustment by adjusting device 19 is made possible by the system of polar coordinates centered about axis A2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soil Working Implements (AREA)
  • Crushing And Grinding (AREA)
  • Road Repair (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

A rotary snow tiller (1), for grooming the snow surface (M) of ski slopes and designed to advance in a travelling direction (D), has a frame (2); a shaft (3) rotating about a first axis (A1) transverse to the travelling direction (D), and having teeth (12) for breaking up the snow surface (M) of ski slopes; a protective casing (4) surrounding the shaft (3); and an adjusting device (6) for selectively adjusting the position of the shaft (3) with respect to the frame (2).

Description

ROTARY SNOW TILLER FOR GROOMING SKI SLOPES
TECHNICAL FIELD
The present invention relates to a rotary snow tiller for grooming ski slopes.
BACKGROUND ART
A rotary snow tiller for grooming ski slopes normally advances in a travelling direction, and comprises a frame; a shaft rotating about a first axis transverse to the travelling direction, and having teeth for breaking up the snow surface; and a protective casing surrounding the shaft.
Known rotary snow tillers of the above type have proved particularly effective in grooming ski slopes, but have several drawbacks, one of which is that the position of the shaft with respect to the snow surface
(tilling depth) can only be adjusted by moving the entire frame. Because the frame often supports other snow-working devices, movement of the frame also alters - in most cases, involuntarily - the position of the other devices, such as the finish mat.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a rotary snow tiller for grooming ski slopes, designed to eliminate the drawbacks of the known art in a straightforward, low-cost manner.
According to the present invention, there is provided a rotary snow tiller for grooming the snow surface of ski slopes and designed to advance in a travelling direction, the rotary snow tiller comprising a frame; a shaft rotating about a first axis transverse to the travelling direction, and having teeth for breaking up the snow surface; and a protective casing surrounding the shaft; the rotary snow tiller being characterized by comprising an adjusting device for selectively adjusting the position of the shaft with respect to the frame. BRIEF DESCRIPTION OF THE DRAWINGS
A number of non-limiting embodiments of the present invention will be described by way of example with reference to the accompanying drawings, in which:
Figure 1 shows a partly schematic side view, with parts removed for clarity, of a rotary snow tiller, for grooming ski slopes, in accordance with the present invention;
Figure 2 shows a perspective view, with parts removed for clarity, of a variation of the Figure 1 rotary snow tiller.
BEST MODE FOR CARRYING OUT THE INVENTION Number 1 in Figure 1 indicates as a whole a rotary snow tiller for grooming the snow surface M of ski slopes, and which is towed in direction D by a snow groomer vehicle not shown in the drawings.
In the example shown in the attached drawings, rotary snow tiller 1 provides for tilling a surface layer of snow surface M of ski slopes, and comprises a frame 2; a shaft 3 mounted to rotate with respect to frame 2 about an axis Al, and extending transverse to travelling direction D; a protective casing 4 surrounding shaft 3; a normally flexible finish mat 5 which is connected to casing 4, extends behind shaft 3, and is drawn over the surface of the tilled snow surface M; and an adjusting device 6 for adjusting the position of shaft 3 with respect to frame 2 and casing 4.
Frame 2 comprises a bar 7 parallel to axis Al; a hitch device 8 fixed to bar 7 and for connecting rotary snow tiller 1 to the snow groomer vehicle (not shown in the drawings) ; two arc-shaped segments 9 fixed to and transverse to bar 7; and two supporting bars 10 (only one shown in Figure 1) for supporting shaft 3. Rotary snow tiller 1 comprises two adjustable panels 11 which have the purpose to protect casing 4 and finish mat 5 from the snow thrown up by the groomer vehicle not shown in the drawings.
Shaft 3 comprises a number of teeth 12 equally spaced about and along axis Al, and each of which projects radially from shaft 3 to penetrate snow surface M.
The length of shaft 3 defines the work range and the width of rotary snow tiller 1 as a whole. Adjusting device 6 comprises two slides 13 (only one shown in Figure 1), each connected in sliding manner to a respective supporting bar 10; two further supporting bars 14, each arranged transverse to supporting bars 10 and engaging in sliding manner a respective slide 13; and two blocks 15, each fitted to the end of a respective supporting bar 14 and connected in rotary manner to a respective end of shaft 3. In the example shown, one of blocks 15 supports a hydraulic motor 16 for rotating shaft 3 about axis Al.
Each slide 13 is connected to respective supporting bar 10 by an actuator 17 - which, in the Figure 1 example, is a double-acting hydraulic cylinder - and is connected to the respective further supporting bar 14 by a further actuator 18 - which, in the Figure 1 example, is also a double-acting hydraulic cylinder.
In actual use, rotary snow tiller 1 tills a surface layer of snow surface M by hydraulic motor 16 rotating shaft 3.
The depth of the tilled surface layer of snow surface M depends on the position of teeth 12 and shaft 3 with respect to snow surface M.
Adjusting device 6 provides for adjusting the tilling depth, without altering the position of frame 2 and casing 4, by simply activating actuators 18.
When the tilling depth is adjusted, the position of finish mat 5 therefore also remains unchanged.
Operation of actuators 17 moves shaft 3 in a direction parallel to travelling direction D, and provides for increasing or reducing recirculation of the tilled snow between casing 4 and shaft 3 for a given tilling depth. In the Figure 2 variation, adjusting device 6 is replaced by an adjusting device 19, and supporting bars
10 of frame 2 are eliminated. Adjusting device 19 comprises two supporting plates 20 movable with respect to frame 2; and two arms 21 mounted to rotate with respect to frame 2 about an axis A2 parallel to axis Al.
Each arm 21 supports a respective supporting plate
20, and is operated by an actuator 22 connected to frame 2 and to arm 20. In the Figure 2 example, actuator 22 is a double-acting hydraulic cylinder.
Supporting plate 20 is mounted to slide along arm
21. In other words, arm 21 engages a guide 23 formed in supporting plate 20, which is movable selectively with respect to arm 21 by an actuator 24 which, in the Figure 2 example, is a double-acting hydraulic cylinder connected to arm 21 and to supporting plate 20.
Figure 2 only shows one supporting plate 20, one arm 21, one actuator 22, one guide 23, and one actuator
24. A hydraulic motor 25 is connected to shaft 3 and fixed to one of supporting plates 20 to rotate shaft 3 about respective axis Al.
In actual use, adjusting device 19 provides for adjusting the tilling depth, and for adjusting the position of shaft 3 in a direction parallel to travelling direction D, to reduce the distance between shaft 3 and casing 4 on the inlet side, depending on the rotation direction of shaft 3. In other words, shaft 3 can be moved forward or back, for a given tilling depth of snow surface M, to adjust the distance between shaft 3 and casing 4 and so adjust the amount of snow recirculated between casing 4 and shaft 3.
This adjustment by adjusting device 19 is made possible by the system of polar coordinates centered about axis A2.

Claims

1) A rotary snow tiller for grooming the snow surface (M) of ski slopes and designed to advance in a travelling direction (D), the rotary snow tiller (1) comprising a frame (2); a shaft (3) rotating about a first axis (Al) transverse to the travelling direction
(D), and having teeth (12) for breaking up the snow surface (M) of ski slopes; and a protective casing (4) surrounding the shaft (3); the rotary snow tiller (1) being characterized by comprising an adjusting device
(6; 19) for selectively adjusting the position of the shaft (3) with respect to the frame (2) .
2) A rotary snow tiller as claimed in Claim 1, characterized in that the adjusting device (6; 19) adjusts the position of the shaft (3) in a direction transverse to the first axis (Al) and to the travelling direction (D) .
3) A rotary snow tiller as claimed in Claim 1 or 2, characterized in that the adjusting device adjusts the position of the shaft (3) in a further direction substantially parallel to the travelling direction (D) .
4) A rotary snow tiller as claimed in any one of the foregoing Claims, characterized by comprising a protective casing (4) integral with the frame (2) .
5) A rotary snow tiller as claimed in Claim 4, characterized by comprising a finish mat (5) connected to the protective casing (4) and located downstream from the shaft (3) with reference to the travelling direction (D) .
6) A rotary snow tiller as claimed in any one of the foregoing Claims, characterized in that the frame (2) comprises two supporting bars (10) for supporting the shaft (3); the adjusting device (6) comprising two slides (13), each of which is connected in sliding manner to a respective supporting bar (10) and is connected to the shaft (3) . 7) A rotary snow tiller as claimed in Claim 6, characterized in that the adjusting device (6) comprises first actuators (17), each connected to a respective slide (13) and to the frame (2) to move the respective slide (13) with respect to the respective supporting bar (10) .
8) A rotary snow tiller as claimed in Claim 6 or 7, characterized in that the adjusting device (6) comprises two further supporting bars (14), each of which extends transverse to a respective supporting bar (10), engages in sliding manner a respective slide (13), and is connected in rotary manner to a respective end of the shaft (3) .
9) A rotary snow tiller as claimed in Claim 8, characterized in that the adjusting device (6) comprises second actuators, each connected to a respective further supporting bar (14) and to a respective slide (13) to adjust the position of the further supporting bar (14) with respect to the slide (13) . 10) A rotary snow tiller as claimed in any one of Claims 1 to 5, characterized in that the adjusting device (19) comprises two movable supporting members
(20) fitted in rotary manner to said shaft (3); the supporting members (20) being adjustable with respect to the frame (2) .
11) A rotary snow tiller as claimed in Claim 10, characterized in that the adjusting device (19) comprises two arms (21) connected to the frame (2); each supporting member (20) being connected in sliding manner to a respective arm (21) .
12) A rotary snow tiller as claimed in Claim 11, characterized in that each of said arms (21) is mounted to rotate with respect to the frame (2) about a second axis (A2) parallel to the first axis (Al) .
13) A rotary snow tiller as claimed in Claim 12, characterized in that the adjusting device (19) comprises two third actuators (22), each connected to a respective arm (21) and to the frame (2) to rotate the respective arm (21) about the second axis (A2) .
14) A rotary snow tiller as claimed in any one of Claims 11 to 13, characterized in that the adjusting device (19) comprises two fourth actuators (24), each connected to a respective arm (21) and to a respective supporting member (20) to move the respective supporting member (20) with respect to the arm (21) .
PCT/EP2008/062211 2007-09-14 2008-09-12 Rotary snow tiller for grooming ski slopes WO2009034185A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08804172.8A EP2201178B1 (en) 2007-09-14 2008-09-12 Rotary snow tiller for grooming ski slopes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20071783 ITMI20071783A1 (en) 2007-09-14 2007-09-14 ROTATING SNOW MILL FOR THE PREPARATION OF THE SNOWY SKI SLOPE
ITMI2007A001783 2007-09-14

Publications (1)

Publication Number Publication Date
WO2009034185A1 true WO2009034185A1 (en) 2009-03-19

Family

ID=40010727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/062211 WO2009034185A1 (en) 2007-09-14 2008-09-12 Rotary snow tiller for grooming ski slopes

Country Status (3)

Country Link
EP (1) EP2201178B1 (en)
IT (1) ITMI20071783A1 (en)
WO (1) WO2009034185A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012014053A2 (en) 2010-07-28 2012-02-02 Rolic Invest S.Ar.L Ski slope snow grooming method and relative implement
US8307573B2 (en) 2007-10-31 2012-11-13 Rolic Invest S.A.R.L. Rotary snow tiller for grooming ski slopes
US8387288B2 (en) 2007-10-31 2013-03-05 Rolic Invest S.Ar.L. Rotary snow tiller for grooming ski slopes
US8388072B2 (en) 2007-06-21 2013-03-05 Rolic Invest S.Ar.L. Crawler vehicle track grouser
US8393095B2 (en) 2007-10-30 2013-03-12 Rolic Invest S.AR. L. Rotary snow tiller and ski slope grooming method
US8413353B2 (en) 2007-10-30 2013-04-09 Rolic Invest S.Ar.L. Hitch device for connecting a groomer vehicle and a ski slope snow grooming implement, and control method employing such a hitch device
US8757736B2 (en) 2008-05-29 2014-06-24 Snowgrolic S. AR. L. Snow groomer track and snow groomer featuring such a track
US8839533B2 (en) 2009-02-18 2014-09-23 Snowgrolic S.A.R.L. Snowgroomer including a winch assembly to aid handling of the snowgroomer on steep slopes, and method of operating the winch assembly
IT201800003000A1 (en) * 2018-02-23 2019-08-23 Prinoth Spa SNOW BLOWER AND RELEVANT ADJUSTMENT METHOD
CN113728139A (en) * 2019-02-12 2021-11-30 普瑞诺斯股份公司 Snow plough for preparing ski run
EP3736154B1 (en) 2019-05-06 2022-09-21 Kässbohrer Geländefahrzeug AG Piste caterpillar

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746101A (en) 1971-02-01 1973-07-17 Raygo Inc Earth working machine
FR2470194A1 (en) * 1979-11-20 1981-05-29 Kaessbohrer Fahrzeug Karl INSTRUMENT TRACTE, ATTACHING TO VEHICLES MOVING ON SNOW, PARTICULARLY FOR THE MAINTENANCE OF TRACKS IN WINTER SPORTS STATIONS
US4786111A (en) 1983-09-26 1988-11-22 Zekeriya Yargici Apparatus and method for delivering liquid coolant to drum mounted cutting tools
US5354147A (en) 1993-07-08 1994-10-11 Swisher Jr George W Pulverizing machine having a cutter assembly towed in both forward and reverse directions
FR2740194A1 (en) 1995-10-20 1997-04-25 Freudenberg Carl Fa RADIAL SEALING RING
US5632106A (en) 1995-08-08 1997-05-27 Lmc Operating Corp. Tiller with adjustable depth cutter and snow comb entry angle
US5659984A (en) 1992-12-21 1997-08-26 Kassohrer Gelandefahzeug GmbH Snow grooming device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746101A (en) 1971-02-01 1973-07-17 Raygo Inc Earth working machine
FR2470194A1 (en) * 1979-11-20 1981-05-29 Kaessbohrer Fahrzeug Karl INSTRUMENT TRACTE, ATTACHING TO VEHICLES MOVING ON SNOW, PARTICULARLY FOR THE MAINTENANCE OF TRACKS IN WINTER SPORTS STATIONS
US4786111A (en) 1983-09-26 1988-11-22 Zekeriya Yargici Apparatus and method for delivering liquid coolant to drum mounted cutting tools
US5659984A (en) 1992-12-21 1997-08-26 Kassohrer Gelandefahzeug GmbH Snow grooming device
US5354147A (en) 1993-07-08 1994-10-11 Swisher Jr George W Pulverizing machine having a cutter assembly towed in both forward and reverse directions
US5632106A (en) 1995-08-08 1997-05-27 Lmc Operating Corp. Tiller with adjustable depth cutter and snow comb entry angle
FR2740194A1 (en) 1995-10-20 1997-04-25 Freudenberg Carl Fa RADIAL SEALING RING

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8388072B2 (en) 2007-06-21 2013-03-05 Rolic Invest S.Ar.L. Crawler vehicle track grouser
US8393095B2 (en) 2007-10-30 2013-03-12 Rolic Invest S.AR. L. Rotary snow tiller and ski slope grooming method
US8413353B2 (en) 2007-10-30 2013-04-09 Rolic Invest S.Ar.L. Hitch device for connecting a groomer vehicle and a ski slope snow grooming implement, and control method employing such a hitch device
US8701312B2 (en) 2007-10-30 2014-04-22 Snowgrolic S.Ar.L. Hitch device for connecting a groomer vehicle and a ski slope snow grooming implement, and control method employing such a hitch device
US8307573B2 (en) 2007-10-31 2012-11-13 Rolic Invest S.A.R.L. Rotary snow tiller for grooming ski slopes
US8387288B2 (en) 2007-10-31 2013-03-05 Rolic Invest S.Ar.L. Rotary snow tiller for grooming ski slopes
US8757736B2 (en) 2008-05-29 2014-06-24 Snowgrolic S. AR. L. Snow groomer track and snow groomer featuring such a track
US8839533B2 (en) 2009-02-18 2014-09-23 Snowgrolic S.A.R.L. Snowgroomer including a winch assembly to aid handling of the snowgroomer on steep slopes, and method of operating the winch assembly
WO2012014053A2 (en) 2010-07-28 2012-02-02 Rolic Invest S.Ar.L Ski slope snow grooming method and relative implement
IT201800003000A1 (en) * 2018-02-23 2019-08-23 Prinoth Spa SNOW BLOWER AND RELEVANT ADJUSTMENT METHOD
WO2019162900A1 (en) * 2018-02-23 2019-08-29 Prinoth S.P.A. Snow tiller and method of adjusting the same
CN110184986A (en) * 2018-02-23 2019-08-30 普瑞诺斯股份公司 Snowplow and its adjusting method
US20210032825A1 (en) * 2018-02-23 2021-02-04 Prinoth S.P.A. Snow tiller and method of adjusting the same
CN110184986B (en) * 2018-02-23 2023-02-17 普瑞诺斯股份公司 Snow plough and adjusting method thereof
US11879221B2 (en) 2018-02-23 2024-01-23 Prinoth S.P.A. Snow tiller and method of adjusting the same
CN113728139A (en) * 2019-02-12 2021-11-30 普瑞诺斯股份公司 Snow plough for preparing ski run
EP3736154B1 (en) 2019-05-06 2022-09-21 Kässbohrer Geländefahrzeug AG Piste caterpillar

Also Published As

Publication number Publication date
EP2201178A1 (en) 2010-06-30
EP2201178B1 (en) 2016-11-02
ITMI20071783A1 (en) 2009-03-15

Similar Documents

Publication Publication Date Title
EP2201178B1 (en) Rotary snow tiller for grooming ski slopes
EP2212476B1 (en) Hitch device for connecting a groomer vehicle and a ski slope snow grooming implement, and control method employing such a hitch device
US8230622B2 (en) Ski slope snow tiller
EP2212475B1 (en) Rotary snow tiller and ski slope grooming method
RU2008105202A (en) DEVICE FOR REGULATING METATEL POSITION IN AGRICULTURAL HARVESTING MACHINE
WO2009034183A1 (en) Ski slope snow grooming equipment and method
CA2704382C (en) Rotary snow tiller for grooming ski slopes
EP2825704B1 (en) Path-clearing apparatus
CA2704387C (en) Rotary snow tiller for grooming ski slopes
US8312649B2 (en) Rotary snow tiller for grooming ski slopes and relative operating method
DE102005040222A1 (en) Cross-country track device and piste grooming vehicle with at least one such cross-country track device
EP3755844B1 (en) Snow tiller and method of adjusting the same
SE462532B (en) Road treatment appliance

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08804172

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2008804172

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2008804172

Country of ref document: EP