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. 03, 2015
Filed:
Jun. 17, 2008
Johan Bram, Kalmar, SE;
Johan Bram, Kalmar, SE;
Construction Tools PC AB, Kalmar, SE;
Abstract
The invention relates to a fuel-powered breaker machine () which has a cylinder () with two pistons () disposed therein. The first of the pistons () is adapted to opening and closing at least an inlet aperture () on an inlet side (I) in a cylinder shell wall (), and an outlet aperture () on an opposite outlet side (O) in the cylinder shell wall (), and, when the apertures () are closed, to compressing against the second piston (), which acts as the working piston of the breaker machine (), an ignitable air/fuel mixture which is admitted via the inlet aperture/apertures (). The first piston () has a crown () which is shaped correspondingly to a crown () of the second piston () and which on said inlet side (I) has a recess () which serves, when the first piston () is at an upper dead center position, as a combustion chamber into which a spark plug () protrudes via the cylinder shell wall () on the inlet side (I), and, when the first piston () is at a lower dead center position, as an inlet chamber into which the inlet aperture/apertures () leads/lead.