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1. (WO2014203143) SNOW CLEARING DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/203143 International Application No.: PCT/IB2014/062259
Publication Date: 24.12.2014 International Filing Date: 16.06.2014
IPC:
E01H 5/06 (2006.01)
E FIXED CONSTRUCTIONS
01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
H
STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; CLEANING LAND; DISPERSING FOG IN GENERAL
5
Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
04
Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying elements, e.g. conveying pneumatically
06
dislodging essentially by non-driven elements, e.g. scraper blades
Applicants:
GILETTA S.P.A. [IT/IT]; Via A. De Gasperi 1 I-12036 Revello (CN), IT
Inventors:
GANDOLFI, Fabio; IT
Agent:
LOVINO, Paolo; Studio Torta S.p.A. Via Viotti, 9 I-10121 Torino, IT
Priority Data:
BO2013A 00030418.06.2013IT
Title (EN) SNOW CLEARING DEVICE
(FR) DISPOSITIF DE DÉNEIGEMENT
Abstract:
(EN) A snow-plough blade group for absorbing lateral impacts comprising: a first and a second snow-removing blade (3,4); a first support (5) bearing the blades (3,4); the second blade (4) being mobile with respect to the first support (5) between a first position, in which the blades (3,4) identify a first snow-removing surface, and a second position in which the blades (3,4) identify a second snow-removing surface larger than the first one; a second support (8) hinged to the first support (5); a first hydraulic cylinder (10) connected between the first and second support (5,8) for orientating the first support (5) with respect to the second support (8); a discharge of liquid in overpressure; bypass valve means connecting the first hydraulic cylinder (10) with the discharge, which bypass valve means are configured such that when the pressure in the first hydraulic cylinder (10) exceeds a threshold value, the bypass valve means place the first hydraulic cylinder in liquid communication with the discharge; characterised in that a sensor detects a position assumed by the second blade (4); and the bypass valve means vary the threshold value according to the sensor reading.
(FR) La présente invention se rapporte à un groupe de lames de chasse-neige permettant d'absorber des impacts latéraux et comportant: une première et une seconde lame de déneigement (3, 4); la seconde lame (4) étant mobile par rapport au premier support (5) entre une première position, dans laquelle les lames (3,4) identifient une première surface de déneigement (6), et une seconde position dans laquelle les lames (3,4) identifient une seconde surface de déneigement qui est plus importante que la première surface de déneigement; un second support (8) qui est articulé au premier support (5); un premier vérin hydraulique (10) qui est raccordé entre les premier et second supports (5,8) pour orienter le premier support (5) par rapport au second support (8); une évacuation (15) du liquide en surpression; des moyens de clapet de dérivation qui raccordent le premier vérin hydraulique (10) à l'évacuation (15) du liquide en surpression, lesquels moyens de clapet de dérivation (12) sont configurés de telle sorte que, lorsque la pression du liquide contenu dans le premier vérin hydraulique (10) dépasse une valeur seuil, les moyens de clapet de dérivation (12) placent le premier vérin hydraulique (10) en communication fluidique avec l'évacuation (15); ledit groupe de lames étant caractérisé en ce qu'il comprend un capteur (17) qui détecte la position supposée de la seconde lame de déneigement (4); et en ce que les moyens de clapet de dérivation (12) modifient la valeur seuil en fonction de la sortie du capteur (17).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Italian (IT)