The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 1976
Filed:
May. 14, 1974
Evgeny Illarinovich Ivanov, Moscow, SU;
Viktor Semenovich Olthow, Perm, SU;
Evgeny Dmitrievich Kostyrya, Perm, SU;
Nikolai Dmitrievich Derkach, Perm, SU;
Other;
Abstract
A turbo-drill is provided with a mechanism for reducing the speed of rotation of the drilling bit, the mechanism being made in the form of a frictional reduction means wherein the rotors of the turbo-drill are the inner wheel and the stators of the turbo-drill are the outer wheel. Between the stators and rotors in the carrier of the reduction means disposed are bodies of rolling, which roll during rotation of the rotor under the action of contact frictional forces. In addition, between the reduction stages of the turbine and above them mounted are one or more auxiliary stages of the turbine, each having two wheels provided with vanes, one of the wheels being connected through its hub to the shaft so as to enable axial displacement thereof with respect to the shaft.