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Application filed by Vtt Technology Oy IncfiledCriticalVtt Technology Oy Inc
Priority to FI902891ApriorityCriticalpatent/FI89625C/en
Publication of FI902891A0publicationCriticalpatent/FI902891A0/en
Publication of FI902891ApublicationCriticalpatent/FI902891A/en
Publication of FI89625BpublicationCriticalpatent/FI89625B/en
Application grantedgrantedCritical
Publication of FI89625CpublicationCriticalpatent/FI89625C/en
Processing Of Stones Or Stones Resemblance Materials
(AREA)
Road Repair
(AREA)
Abstract
The invention concerns a wedge to be used during chipping of stones, said wedge including an impact head 1 and a tip part 2 that tapers to a tip 3 from this. According to the invention the tip part represents a conical surface 4, in which there are two chamfers 5 formed inward from the conical surface and situated on opposite sides, which extend essentially along the entire length between the impact head and the tip. <IMAGE>
IMPROVEMENTS IN THE PURPOSE OF THE MAIN PATENT N 523.325 BY: TRANSPORTABLE, REMOVABLE, TRANSFORMABLE AND LAUNCHABLE BRIDGE FROM A SHORE BY TELESCOPIC ADVANCE BEAM