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:
Mar. 31, 1987
Filed:
Oct. 04, 1985
Alexandr D Kostylev, Novosibirsk, SU;
Jury N Syryamin, Novosibirsk, SU;
Boris N Smolyanitsky, Novosibirsk, SU;
Vladimir P Boginsky, Novosibirsk, SU;
Alexei D Terskov, Novosibirsk, SU;
Elena G Mjuntser, Novosibirsk, SU;
Anatoly M Petreev, Novosibirsk, SU;
Institut Gornogo Dela Sibirskogo Otdelenia An SSSR, Novosibirsk, SU;
Abstract
A percussive air tool with a hollow cylindrical stepped housing having air inlet and air exhaust ports. A stepped hammer reciprocates inside the housing and has an axial central bore with a tube element disposed in the bore. The tool includes, work stroke and return stroke chambers, an air supply hose pipe with an air feeding valve, and a rod-clamping device arranged in the forward portion of the housing. The smaller step of the hammer has a neck portion or groove adapted to communicate the air inlet port with the interior of the larger step of the housing, an open annular cavity being formed between the tube element and the walls of the hammer bore.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile