Hammer drill

A hammer drill including a cylinder; a piston and a ram mounted within the cylinder; a drive mechanism for converting rotation of a motor into reciprocating movement of the piston; a ram driven by the piston via an air spring; at least two air entry points formed through the wall of the cylinder in...

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1. Verfasser:	Gensmann Stefan
Format:	Patent
Sprache:	eng
Schlagworte:	HAND TOOLS MANIPULATORS PERCUSSIVE TOOLS PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS TRANSPORTING
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creator	Gensmann Stefan
description	A hammer drill including a cylinder; a piston and a ram mounted within the cylinder; a drive mechanism for converting rotation of a motor into reciprocating movement of the piston; a ram driven by the piston via an air spring; at least two air entry points formed through the wall of the cylinder in different axial positions along the length of the cylinder, each of which are capable of replenishing the air spring; the ram striking a tool in a tool holder; wherein there is further provided a selector mechanism which selectively opens and close the air entry points; characterized in that the selector mechanism opens only one air entry point at any one time during normal use, the selector mechanism closing all other air entry points, each of the air entry point capable of replenishing the air spring during normal use when opened by the selector mechanism.
format	Patent
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the ram striking a tool in a tool holder; wherein there is further provided a selector mechanism which selectively opens and close the air entry points; characterized in that the selector mechanism opens only one air entry point at any one time during normal use, the selector mechanism closing all other air entry points, each of the air entry point capable of replenishing the air spring during normal use when opened by the selector mechanism.</description><language>eng</language><subject>HAND TOOLS ; MANIPULATORS ; PERCUSSIVE TOOLS ; PERFORMING OPERATIONS ; PORTABLE POWER-DRIVEN TOOLS ; TRANSPORTING</subject><creationdate>2016</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20161122&DB=EPODOC&CC=US&NR=9498874B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20161122&DB=EPODOC&CC=US&NR=9498874B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Gensmann Stefan</creatorcontrib><title>Hammer drill</title><description>A hammer drill including a cylinder; a piston and a ram mounted within the cylinder; a drive mechanism for converting rotation of a motor into reciprocating movement of the piston; a ram driven by the piston via an air spring; at least two air entry points formed through the wall of the cylinder in different axial positions along the length of the cylinder, each of which are capable of replenishing the air spring; the ram striking a tool in a tool holder; wherein there is further provided a selector mechanism which selectively opens and close the air entry points; characterized in that the selector mechanism opens only one air entry point at any one time during normal use, the selector mechanism closing all other air entry points, each of the air entry point capable of replenishing the air spring during normal use when opened by the selector mechanism.</description><subject>HAND TOOLS</subject><subject>MANIPULATORS</subject><subject>PERCUSSIVE TOOLS</subject><subject>PERFORMING OPERATIONS</subject><subject>PORTABLE POWER-DRIVEN TOOLS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZODxSMzNTS1SSCnKzMnhYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxocGWJpYWFuYmTkbGRCgBAMysHXg</recordid><startdate>20161122</startdate><enddate>20161122</enddate><creator>Gensmann Stefan</creator><scope>EVB</scope></search><sort><creationdate>20161122</creationdate><title>Hammer drill</title><author>Gensmann Stefan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US9498874B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2016</creationdate><topic>HAND TOOLS</topic><topic>MANIPULATORS</topic><topic>PERCUSSIVE TOOLS</topic><topic>PERFORMING OPERATIONS</topic><topic>PORTABLE POWER-DRIVEN TOOLS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>Gensmann Stefan</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gensmann Stefan</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Hammer drill</title><date>2016-11-22</date><risdate>2016</risdate><abstract>A hammer drill including a cylinder; a piston and a ram mounted within the cylinder; a drive mechanism for converting rotation of a motor into reciprocating movement of the piston; a ram driven by the piston via an air spring; at least two air entry points formed through the wall of the cylinder in different axial positions along the length of the cylinder, each of which are capable of replenishing the air spring; the ram striking a tool in a tool holder; wherein there is further provided a selector mechanism which selectively opens and close the air entry points; characterized in that the selector mechanism opens only one air entry point at any one time during normal use, the selector mechanism closing all other air entry points, each of the air entry point capable of replenishing the air spring during normal use when opened by the selector mechanism.</abstract><oa>free_for_read</oa></addata></record>
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language	eng
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subjects	HAND TOOLS MANIPULATORS PERCUSSIVE TOOLS PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS TRANSPORTING
title	Hammer drill
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