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VNII BUROVO
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VNII BUROVO
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Priority to ES548140ApriorityCriticalpatent/ES8609573A1/en
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Publication of ES548140A0publicationCriticalpatent/ES548140A0/en
Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like
(AREA)
Electrically Driven Valve-Operating Means
(AREA)
Abstract
The drill comprises a seat with a toothed wheel coaxial with the seat. The motor drive shafts have pinions engaging the wheel. Each motor has opposed helicoidal actuators of opposed threading.