Patent US5943838A successfully refreshed from Google Patents.
US5943838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal stud with bendable tab channel support
Assignee: Kwik Bridge Punch Systems LLC
•
Filing: 1998-05-27
•
Granted: 1999-08-31
•
Expires: 2018-05-27
Abstract
Abstract A metal stud having a central web between a pair of opposed flanges includes an opening in the web through which a channel can pass. The opening has at least one straight edge and a centrally disposed bendable tab extending into the opening. The width of the tab is substantially less than the width of the opening. Bending the tab to a position at right angles to the web of the stud provides a surface to which the channel can be attached. A framework is disclosed which comprises a plurality of such metal studs having openings in their webs through which the channel is passed and then attached to the bent tabs.
Inventors
- 👤 Robert L. Madsen
- 👤 William L. Knorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:43
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/762; E04B2/763; E04B2/7407; E04B2/7453; E04B2/7457; E04B2/78; E04B2/7854; E04B2/789; E04B5/00; E04B5/02; E04B5/14; E04C; E04C3/00; E04C3/02; E04C2003/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A metal stud comprising: a pair of opposed flanges; and a central web joining the flanges, the web having at least one opening for the reception of a stiffening member passing therethrough, the stiffening member comprising a flat surface, the opening comprising at least one straight edge; the web further comprising a bendable tab integral with the web and extending into the opening a distance substantially less than the length of the opening, the tab being centrally disposed along the straight edge, the tab having a width substantially less than the width of the opening along the straight edge, the tab being adapted to abut the surface of the stiffening member when the tab is bent to a position at right angles to the web, the tab being adapted to be positively attached to the surface of the stiffening member, thereby to positively attach the stud to the surface of the stiffening member.
Claim 2
Dependent Claim
153 words
A metal stud comprising: a pair of opposed flanges; and a central web joining the flanges, the web having at least one opening for the reception of a stiffening member passing therethrough, the stiffening member comprising a flat surface, the opening comprising at least one straight edge; the web further comprising a bendable tab integral with the web and extending into the opening a distance substantially less than the length of the opening, the tab being centrally disposed along the straight edge, the tab having a width substantially less than the width of the opening along the straight edge, the tab being adapted to abut the surface of the stiffening member when the tab is bent to a position at right angles to the web, the tab being adapted to be positively attached to the surface of the stiffening member, thereby to positively attach the stud to the surface of the stiffening member.
Claim 3
Dependent Claim
127 words
A framework comprising a plurality of studs as defined in claim 1, the openings in the webs of the studs being in alignment with each other; a stiffening member comprising a flat surface extending through the aligned openings in the webs of the studs, the stiffening member having a width equal to the width of the openings in the webs of the studs, the tabs of the openings being bent at right angles to the webs of the studs to positions that abut and support the flat surface of the stiffening member; and means to fasten the tabs to the flat surface of the stiffening member to positively attach the studs to the stiffening member and prevent any relative movement between the stiffening member and the tabs.
Claim 4
Dependent Claim
50 words
The framework of claim 2, wherein the studs comprise C-studs and the stiffening member comprises a channel comprising a pair of opposed flanges and a central web joining the flanges, the tabs of the openings in the webs of the studs being attached to the central web of the channel.
Claim 5
Independent Claim
184 words
A method of making a framework comprising a plurality of metal studs and at least one stiffening member, each of the studs having opposed flanges and a central web connecting the flanges, the stiffening member comprising a flat surface, the method comprising: punching an aligned opening in the web of each of the studs, each of the openings comprising at least one straight edge, the web comprising an integral bendable tab extending from the straight edge into the opening a distance substantially less than the length of the opening, the tab being centrally disposed along the straight edge and having a width substantially less than the width of the opening along the straight edge; bending each of the tabs to a position at right angles to the web of the respective stud; passing the stiffening member through the openings with the flat surface of the stiffening member in contact with the surfaces of the tabs; and positively attaching the flat surface of the stiffening member to the tabs to prevent any relative movement between the flat surface of the stiffening member and the tabs.
Claim 6
Independent Claim
184 words
A method of making a framework comprising a plurality of metal studs and at least one stiffening member, each of the studs having opposed flanges and a central web connecting the flanges, the stiffening member comprising a flat surface, the method comprising: punching an aligned opening in the web of each of the studs, each of the openings comprising at least one straight edge, the web comprising an integral bendable tab extending from the straight edge into the opening a distance substantially less than the length of the opening, the tab being centrally disposed along the straight edge and having a width substantially less than the width of the opening along the straight edge; bending each of the tabs to a position at right angles to the web of the respective stud; passing the stiffening member through the openings with the flat surface of the stiffening member in contact with the surfaces of the tabs; and positively attaching the flat surface of the stiffening member to the tabs to prevent any relative movement between the flat surface of the stiffening member and the tabs.
References Cited (Backward Citations)
US3305981A
Cited
US3423893A
Cited
US3562970A
Cited
US4235054A
Cited
US5155962A
Cited
US5313752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |