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Pub. No.:    WO/1999/038655    International Application No.:    PCT/GB1999/000133
Publication Date: 05.08.1999 International Filing Date: 29.01.1999
Chapter 2 Demand Filed:    31.08.1999    
B25D 9/20 (2006.01)
Applicants: CALDERVALE ENGINEERING SERVICES LIMITED [GB/GB]; Dunrobin Road Airdrie Lanarkshire ML6 8LS (GB) (For All Designated States Except US).
NAISMITH, George [GB/GB]; (GB) (For US Only)
Inventors: NAISMITH, George; (GB)
Agent: McCALLUM, William, Potter; Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE (GB)
Priority Data:
9802034.0 31.01.1998 GB
Abstract: front page image
(EN)A fluid actuated tool in the form of a hydraulic hammer (20) comprises a body (22), a cylinder (26) and a chuck body (28). A piston (34) mounted within the cylinder (26) reciprocates and impacts on a chisel (36). Movement of the piston (34) results from the supply of hydraulic fluid, controlled by an apertured distributor valve sleeve (38) with a number of cylinder ports (40) communicating with a series of axial fluid carrying bores (42). Movement of the piston (34) and the sleeve (38) bring ports (40) and bores (42) into and out of alignment, so regulating movement of the piston (34).
(FR)Cet outil hydraulique, du type marteau hydraulique (20) comprend un corps (22), un cylindre (26) et un corps de mandrin (28). Un piston (34) monté dans le cylindre (26) exécute un mouvement de va-et-vient et heurte un burin (36). Le mouvement du piston (34) résulte de l'alimentation en fluide hydraulique commandée par un manchon (38) de soupape distributrice, présentant une ouverture, un certain nombre d'orifices (40) du cylindre communiquant avec une suite d'alésage axiaux (42) porteurs de fluide. Le mouvement du piston (34) et du manchon (38) provoque l'alignement et le non-alignement des orifices (40) et des alésages (42), régulant ainsi le mouvement du piston (34).
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)