Patent US5896724A successfully refreshed from Google Patents.
US5896724A
Expired / Lapsed
US
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Reinforcing strut
Assignee: B&D Australia Pty Ltd
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Filing: 1997-10-23
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Granted: 1999-04-27
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Expires: 2017-10-23
Abstract
Abstract A reinforcing strut for an overhead sectional door including a pair of oppositely directed feet for fastening the reinforcing strut to the overhead sectional door and a wall extending from an end of each of the feet with the walls overlying one another and fixed to one another.
Inventors
- 👤 David John Tofts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/065; E04B9/067; E04B9/068; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E06; E06B; E06B3/00; E06B3/32; E06B3/48; E06B3/485; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/043; E04C2003/0439; E04C2003/0443; E04C2003/0452
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
125 words
A reinforcing strut for a sectional overhead door, the strut being made from a unitary piece of material and including a pair of oppositely directed feet for fastening the strut to the sectional overhead door, the feet having adjacent inner ends, a wall extending from each of the inner ends and at right angles to the feet with the walls being in contact with one another and fixed to one another at fixing locations arranged in two rows with each said row having a plurality of said fixing locations at spaced intervals along the strut with one of the rows being adjacent the feet and the other said row being spaced from the feet and adjacent an edge of the walls spaced from the feet.
Claim 2
Dependent Claim
125 words
A reinforcing strut for a sectional overhead door, the strut being made from a unitary piece of material and including a pair of oppositely directed feet for fastening the strut to the sectional overhead door, the feet having adjacent inner ends, a wall extending from each of the inner ends and at right angles to the feet with the walls being in contact with one another and fixed to one another at fixing locations arranged in two rows with each said row having a plurality of said fixing locations at spaced intervals along the strut with one of the rows being adjacent the feet and the other said row being spaced from the feet and adjacent an edge of the walls spaced from the feet.
Claim 3
Dependent Claim
16 words
The reinforcing strut of claim 1 wherein the strut is made using a roll forming operation.
Claim 4
Dependent Claim
22 words
The reinforcing strut of claim 1 wherein an enclosed structure is formed at the edge of the walls spaced from the feet.
Claim 5
Dependent Claim
16 words
The reinforcing strut of claim 3 wherein the enclosed structure is square in cross sectional shape.
Claim 6
Dependent Claim
16 words
The reinforcing strut of claim 3 wherein the enclosed structure is circular in cross sectional shape.
Claim 7
Dependent Claim
28 words
The reinforcing strut of claim 4 wherein a side of the enclosed structure is substantially at an angle of 135 degrees with respect to an adjacent said wall.
Claim 8
Dependent Claim
18 words
The reinforcing strut of claim 1 including an upstanding lip at a free edge of each said foot.
Claim 9
Dependent Claim
15 words
The reinforcing strut of claim 7 wherein each said lip is turned over onto itself.
Claim 10
Dependent Claim
22 words
The reinforcing strut of claim 2 wherein an enclosed structure is formed at the edge of the walls spaced from the feet.
Claim 11
Dependent Claim
16 words
The reinforcing strut of claim 9 wherein the enclosed structure is circular in cross sectional shape.
Claim 12
Dependent Claim
16 words
The reinforcing strut of claim 9 wherein the enclosed structure is square in cross sectional shape.
Claim 13
Dependent Claim
28 words
The reinforcing strut of claim 11 wherein a side of the enclosed structure is substantially at an angle of 135 degrees with respect to an adjacent said wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-04-26 | 2002-10-26 | 2003-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-26 | 2006-10-26 | 2007-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-26 | 2010-10-26 | 2011-04-27 | $7700.00 | Window Closed / Lapsed |