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.

Date of Patent:
Dec. 07, 1976

Filed:

Dec. 08, 1975
Applicant:
Inventors:

Gennady Innokentievich Razgildeev, Novokuznetsk Kemerovskoi oblasti, SU;

Boris Yakovlevich Ekber, Moscow, SU;

Petr Ipatovich Jurin, Novokuznetsk Kemerovskoi oblasti, SU;

Vladislav Markovich Kernichansky, Novokuznetsk Kemerovskoi oblasti, SU;

Alexandr Semenovich Gorbachev, Novokuznetsk Kemerovskoi oblasti, SU;

Grigory Markovich Timoshenko, Donetsk, SU;

Stanislav Antonovich Lenenko, Donetsk, SU;

Valery Dmitrievich Namleev, Donetsk, SU;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 56 ; 299 17 ; 299 75 ;
Abstract

The coal mining combine has a crawler carriage with a driving mechanism supporting a bed plate with a turntable on which an arrow-like actuator with a motor for rotating it and a bit are hinged. The hollow body of the actuator contains a built-in monitor. Hydraulic cylinders which are used for moving the actuator and the monitor's barrel are provided. Manifolds are used for supplying water to the monitor and to the actuator. In accordance with the invention, a channel is made in the supporting bed plate. This channel is a hydraulic shock acceleration tubing whose sections are located one above another in at least two rows. A pneumohydraulic accumulator communicating with the water supply source is connected to the channel's inlet, while an oscillator, included in the network for supplying water to the monitor, is connected to the channel's outlet.


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