Portable traffic control device

A portable traffic control device having a housing, two generally parallel and independently rotatable shafts extending the housing length, and a plurality of blades connected to each shaft. Each shaft rotates such that the blades on that shaft either protrude up through openings in the top of the h...

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1. Verfasser:	BLAIR WILLIAM H
Format:	Patent
Sprache:	eng
Schlagworte:	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS
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creator	BLAIR WILLIAM H
description	A portable traffic control device having a housing, two generally parallel and independently rotatable shafts extending the housing length, and a plurality of blades connected to each shaft. Each shaft rotates such that the blades on that shaft either protrude up through openings in the top of the housing or extend horizontally within the housing. When a shaft is rotated such that its blades protrude upward, the blades remain protruding and puncture the tires of vehicles driving over the housing in a first direction. The blades are pushed downward into the housing by contact with tires of vehicles driving over the housing in the opposite direction. Biasing means rotates that shaft pushing the blades up to their protruding position. The device is modular in that two or more devices may be detachably connected in series wherein all of the first shafts and all of the second shafts rotate in unison.
format	Patent
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Each shaft rotates such that the blades on that shaft either protrude up through openings in the top of the housing or extend horizontally within the housing. When a shaft is rotated such that its blades protrude upward, the blades remain protruding and puncture the tires of vehicles driving over the housing in a first direction. The blades are pushed downward into the housing by contact with tires of vehicles driving over the housing in the opposite direction. Biasing means rotates that shaft pushing the blades up to their protruding position. The device is modular in that two or more devices may be detachably connected in series wherein all of the first shafts and all of the second shafts rotate in unison.</description><edition>7</edition><language>eng</language><subject>ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE ; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES ; FIXED CONSTRUCTIONS</subject><creationdate>2004</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=20040930&DB=EPODOC&CC=US&NR=2004190990A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040930&DB=EPODOC&CC=US&NR=2004190990A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BLAIR WILLIAM H</creatorcontrib><title>Portable traffic control device</title><description>A portable traffic control device having a housing, two generally parallel and independently rotatable shafts extending the housing length, and a plurality of blades connected to each shaft. Each shaft rotates such that the blades on that shaft either protrude up through openings in the top of the housing or extend horizontally within the housing. When a shaft is rotated such that its blades protrude upward, the blades remain protruding and puncture the tires of vehicles driving over the housing in a first direction. The blades are pushed downward into the housing by contact with tires of vehicles driving over the housing in the opposite direction. Biasing means rotates that shaft pushing the blades up to their protruding position. The device is modular in that two or more devices may be detachably connected in series wherein all of the first shafts and all of the second shafts rotate in unison.</description><subject>ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE</subject><subject>CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES</subject><subject>FIXED CONSTRUCTIONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAPyC8qSUzKSVUoKUpMS8tMVkjOzyspys9RSEkty0xO5WFgTUvMKU7lhdLcDMpuriHOHrqpBfnxqcUFicmpeakl8aHBRgYGJoaWBpaWBo6GxsSpAgDCoiXn</recordid><startdate>20040930</startdate><enddate>20040930</enddate><creator>BLAIR WILLIAM H</creator><scope>EVB</scope></search><sort><creationdate>20040930</creationdate><title>Portable traffic control device</title><author>BLAIR WILLIAM H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2004190990A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2004</creationdate><topic>ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE</topic><topic>CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES</topic><topic>FIXED CONSTRUCTIONS</topic><toplevel>online_resources</toplevel><creatorcontrib>BLAIR WILLIAM H</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BLAIR WILLIAM H</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Portable traffic control device</title><date>2004-09-30</date><risdate>2004</risdate><abstract>A portable traffic control device having a housing, two generally parallel and independently rotatable shafts extending the housing length, and a plurality of blades connected to each shaft. Each shaft rotates such that the blades on that shaft either protrude up through openings in the top of the housing or extend horizontally within the housing. When a shaft is rotated such that its blades protrude upward, the blades remain protruding and puncture the tires of vehicles driving over the housing in a first direction. The blades are pushed downward into the housing by contact with tires of vehicles driving over the housing in the opposite direction. Biasing means rotates that shaft pushing the blades up to their protruding position. The device is modular in that two or more devices may be detachably connected in series wherein all of the first shafts and all of the second shafts rotate in unison.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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language	eng
recordid	cdi_epo_espacenet_US2004190990A1
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subjects	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS
title	Portable traffic control device
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