Prenotched fire-rated runner
The grid member is formed of sheet metal and has an inverted T-shape with a bulb at the top, a double thickness central web and oppositely disposed flanges at the bottom. To achieve controlled expansion, two parallel lances are cut along opposite sides of the bulb near the top of the bulb. No metal...
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| creator | NUTE, JR. ERNEST B FRECSKA SANDOR A SAUER GALE E |
| description | The grid member is formed of sheet metal and has an inverted T-shape with a bulb at the top, a double thickness central web and oppositely disposed flanges at the bottom. To achieve controlled expansion, two parallel lances are cut along opposite sides of the bulb near the top of the bulb. No metal is removed at this area of maximum bending stress. Further, staggered cutouts are placed in the two thicknesses which make up the web. By staggering the cutout areas of adjacent web layers, the overall web strength is maintained. These web cutouts and the lance at the top of the bulb cooperate upon thermal expansion, causing the bottom flanges to buckle down, and the web and sides of the bulb to separate laterally and fold, and the top of the bulb to buckle up. The folded web configuration directed by the staggered cutout pattern will maintain longitudinal rigidity. |
| format | Patent |
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To achieve controlled expansion, two parallel lances are cut along opposite sides of the bulb near the top of the bulb. No metal is removed at this area of maximum bending stress. Further, staggered cutouts are placed in the two thicknesses which make up the web. By staggering the cutout areas of adjacent web layers, the overall web strength is maintained. These web cutouts and the lance at the top of the bulb cooperate upon thermal expansion, causing the bottom flanges to buckle down, and the web and sides of the bulb to separate laterally and fold, and the top of the bulb to buckle up. The folded web configuration directed by the staggered cutout pattern will maintain longitudinal rigidity.</description><edition>5</edition><language>eng</language><subject>BUILDING ; CEILINGS ; FIXED CONSTRUCTIONS ; FLOORS ; GENERAL BUILDING CONSTRUCTIONS ; INSULATION OR OTHER PROTECTION OF BUILDINGS ; ROOFS ; WALLS, e.g. PARTITIONS</subject><creationdate>1994</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=19940920&DB=EPODOC&CC=US&NR=5347783A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19940920&DB=EPODOC&CC=US&NR=5347783A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NUTE, JR.; ERNEST B</creatorcontrib><creatorcontrib>FRECSKA; SANDOR A</creatorcontrib><creatorcontrib>SAUER; GALE E</creatorcontrib><title>Prenotched fire-rated runner</title><description>The grid member is formed of sheet metal and has an inverted T-shape with a bulb at the top, a double thickness central web and oppositely disposed flanges at the bottom. To achieve controlled expansion, two parallel lances are cut along opposite sides of the bulb near the top of the bulb. No metal is removed at this area of maximum bending stress. Further, staggered cutouts are placed in the two thicknesses which make up the web. By staggering the cutout areas of adjacent web layers, the overall web strength is maintained. These web cutouts and the lance at the top of the bulb cooperate upon thermal expansion, causing the bottom flanges to buckle down, and the web and sides of the bulb to separate laterally and fold, and the top of the bulb to buckle up. The folded web configuration directed by the staggered cutout pattern will maintain longitudinal rigidity.</description><subject>BUILDING</subject><subject>CEILINGS</subject><subject>FIXED CONSTRUCTIONS</subject><subject>FLOORS</subject><subject>GENERAL BUILDING CONSTRUCTIONS</subject><subject>INSULATION OR OTHER PROTECTION OF BUILDINGS</subject><subject>ROOFS</subject><subject>WALLS, e.g. PARTITIONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1994</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAJKErNyy9JzkhNUUjLLErVLUosATKLSvPyUot4GFjTEnOKU3mhNDeDvJtriLOHbmpBfnxqcUFicmpeakl8aLCpsYm5uYWxozFhFQAkgCNA</recordid><startdate>19940920</startdate><enddate>19940920</enddate><creator>NUTE, JR.; ERNEST B</creator><creator>FRECSKA; SANDOR A</creator><creator>SAUER; GALE E</creator><scope>EVB</scope></search><sort><creationdate>19940920</creationdate><title>Prenotched fire-rated runner</title><author>NUTE, JR.; ERNEST B ; FRECSKA; SANDOR A ; SAUER; GALE E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5347783A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1994</creationdate><topic>BUILDING</topic><topic>CEILINGS</topic><topic>FIXED CONSTRUCTIONS</topic><topic>FLOORS</topic><topic>GENERAL BUILDING CONSTRUCTIONS</topic><topic>INSULATION OR OTHER PROTECTION OF BUILDINGS</topic><topic>ROOFS</topic><topic>WALLS, e.g. PARTITIONS</topic><toplevel>online_resources</toplevel><creatorcontrib>NUTE, JR.; ERNEST B</creatorcontrib><creatorcontrib>FRECSKA; SANDOR A</creatorcontrib><creatorcontrib>SAUER; GALE E</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NUTE, JR.; ERNEST B</au><au>FRECSKA; SANDOR A</au><au>SAUER; GALE E</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Prenotched fire-rated runner</title><date>1994-09-20</date><risdate>1994</risdate><abstract>The grid member is formed of sheet metal and has an inverted T-shape with a bulb at the top, a double thickness central web and oppositely disposed flanges at the bottom. To achieve controlled expansion, two parallel lances are cut along opposite sides of the bulb near the top of the bulb. No metal is removed at this area of maximum bending stress. Further, staggered cutouts are placed in the two thicknesses which make up the web. By staggering the cutout areas of adjacent web layers, the overall web strength is maintained. These web cutouts and the lance at the top of the bulb cooperate upon thermal expansion, causing the bottom flanges to buckle down, and the web and sides of the bulb to separate laterally and fold, and the top of the bulb to buckle up. The folded web configuration directed by the staggered cutout pattern will maintain longitudinal rigidity.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BUILDING CEILINGS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS ROOFS WALLS, e.g. PARTITIONS |
| title | Prenotched fire-rated runner |
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