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 Firma Weatherford Oil Tool G.M.B.H.filedCriticalFirma Weatherford Oil Tool G.M.B.H.
Priority to RO77375ApriorityCriticalpatent/RO70103B/en
Publication of RO70103ApublicationCriticalpatent/RO70103A/en
Publication of RO70103BpublicationCriticalpatent/RO70103B/en
Dispozitiv, conform revendicarii 1, caracterizat prin aceea ca pe ambele parti ale deschiderii (d) din carcasa (4) sunt montate, cu posibilitate de rotire în jurul unor axe (28 si 29) niste clape (26 si 27) de adicere si precentrare a burlanelor (9)care pot fi închise sau deschise cu ajutorul unor cilindri (30 si 31) hidraulici sau pneumatici atît pe clapele (26 si 27) cît si pe carcasa (4) fiind fixate niste piese (32 si 33) de centrare a burlanelor (9).Device according to claim 1, characterized in that on both sides of the opening (d) of the housing (4) are rotatably mounted around some axes (28 and 29) keying means (26 and 27) for addition and precentration of the valves (9) which can be closed or opened by means of hydraulic or pneumatic cylinders (30 and 31) both on the keys (26 and 27) and on the housing (4) there being fixed some parts (32 and 33) (9).
RO77375A1974-01-231974-01-23Device for screwing-unscrewing pipes
RO70103B
(en)
PROCEDURE FOR BINDING AND / OR INOCULATING AND / OR DEOXIDIZING A CAST IRON CASTING MADE IN A CUBILOT OVEN, AS WELL AS A DEVICE FOR THE PROCESS REALIZATION