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Machine translation
1. (WO1979000131) FLUID OPERABLE IMPACTOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000131    International Application No.:    PCT/US1978/000076
Publication Date: 22.03.1979 International Filing Date: 01.09.1978
IPC:
B21J 15/22 (2006.01), B21J 7/24 (2006.01), B21J 7/28 (2006.01), B21J 7/46 (2006.01)
Applicants:
Inventors:
Priority Data:
830557 06.09.1977 US
Title (EN) FLUID OPERABLE IMPACTOR
(FR) DISPOSITIF HYDRAULIQUE A PERCUSSION
Abstract: front page image
(EN)A fluid operable impactor having a hammer piston longitudinally shuttleable within an elongated bore under the influence of fluid pressure and having a variable volume exhaust chamber (36) maintained in intermittent fluid communication with an exhaust vent and having a variable volume chamber (18a) arranged for intercommunication with said exhaust chamber and a servo valve operable to control fluid flow within the impactor and the volume of said variable volume chamber.
(FR)Dispositif hydraulique a percussion ayant un piston percuteur enferme longitudinalement a l"interieur d"un alesage allonge par l"action d"une pression hydraulique intermittente avec une lumiere de refoulement et comprenant une chambre a volume variable (18a) disposee de maniere a etre en intercommunication avec ladite chambre de refoulement et avec une vanne d"asservissement pour commander le debit hydraulique entre le dispositif a percussion et le volume de ladite chambre a volume variable.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)