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.:

US 4209070 B1

Date of Patent:

Jun. 24, 1980

Filed:

Jan. 10, 1978

Air-operated self-propelling rotary-percussive downhole drill

Applicant:

Inventors:

Boris V Sudnishnikov, Novosibirsk, SU;

Veniamin V Kamensky, Novosibirsk, SU;

Eduard P Varnello, Novosibirsk, SU;

Sergei K Tupitsyn, Novosibirsk, SU;

Boris V Nazarov, Novosibirsk, SU;

Assignee:

Other;

Attorney:

Haseltine, Lake & Waters

Primary Examiner:

William F Pate, III

Int. Cl.

CPC ...

E21B / ;

U.S. Cl.

CPC ...

173 78 ; 173 78 ; 173 80 ; 173110 ; 173131 ; 175 99 ;

Abstract

The drill has a housing receiving therein a reciprocating striker, effecting percussive action upon the tool for breaking the rock at the face of the hole, mounted at the forward part of the housing, and upon the housing itself for propelling the drill in the hole. The housing also receives therein a mechanism for rotating the tool, including a self-controlled coupling provided with a movable sleeve and a stationary sleeve and adapted to transmit a torque to the tool in only one direction of rotation. The drill is provided with a device preventing a rearward motion of the housing and its rotation during a drilling operation. The drill is characterized by having a return device for retracting the tool from the face after it has been struck by the striker. The return device includes a piston mounted on the tail portion of the tool and mounted intermediate the striker and the forward bottom of the housing, a piston space defined between the piston and the forward bottom of the housing and a resilient member accommodated in this space and cooperating with the piston.

Find Patent Forward Citations

Sudnishnikov, Boris. (1980). Air-operated self-propelling rotary-percussive downhole drill (U.S. Patent No. 4209070). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4209070

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile