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US5440848A Expired / Lapsed US ⏱️ 0.0 years remaining

Metal studs to replace wood studs

Assignee: BDO LLC
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Filing: 1992-09-18
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Granted: 1995-08-15
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Expires: 2012-09-18
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Abstract

Abstract Metal studs to replace vertical wood studs for use in the framing of walls of partitions. The ends of the metal studs are configured to allow convenient and rapid use by carpenters in the same manner that wood studs are used in assembling the frame for partitions, walls or sections thereof, and without any need for additional training of or new tools for the carpenters. The unique configuration having a flange or leg on both ends of only one side of the metal studs, allowing the interior surface of the flanges to conveniently interconnect with the respective vertical surface of the top (ceiling) and bottom (floor) wood plates. Each end of the central portion of the stud has a flange to interface with the exposed horizontal surface of top and bottom wood plates. This unique configuration allows the metal studs to be attached conveniently and inexpensively, by nailing to the top and bottom wood plates.

Inventors

  • 👤 Thomas H. Deffet

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 01:46
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7453; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0473

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 104 words
An improved metal stud to replace conventional wood studs used as vertical studs in forming walls or partitions in houses, apartments, office or other buildings and adapted to be connected to wood plates, comprising: a rectangular sheet metal strip bent into a form, with an open rectangular cross-section to define three walls comprising two parallel side walls and a central wall; extensions on and integral to each end of only one of said side walls extending beyond said central wall to form a leg to provide a flange for each end; and a flange integral and perpendicular to each end of such central wall.
Claim 2
Dependent Claim 104 words
An improved metal stud to replace conventional wood studs used as vertical studs in forming walls or partitions in houses, apartments, office or other buildings and adapted to be connected to wood plates, comprising: a rectangular sheet metal strip bent into a form, with an open rectangular cross-section to define three walls comprising two parallel side walls and a central wall; extensions on and integral to each end of only one of said side walls extending beyond said central wall to form a leg to provide a flange for each end; and a flange integral and perpendicular to each end of such central wall.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-08-14 1999-02-13 1999-08-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-08-14 2003-02-13 2003-08-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-08-14 2007-02-13 2007-08-15 $7700.00 Window Closed / Lapsed

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