Patent US6694697B2 successfully refreshed from Google Patents.
US6694697B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grating with crimped intersections
Assignee: JOHN D SHEPHERD LLC
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Filing: 2001-10-09
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Granted: 2004-02-24
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Expires: 2021-10-09
Abstract
Abstract Main bars end intersecting cross bars each have mated slots in their aligned edges. Deformable pairs of arms on one of the sets set of bars are crimped into openings in the other set of bars at the bar intersections to hold the bars together and make a strong and attractive grating.
Inventors
- 👤 John D. Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:24
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/42; E04C2/421; E04C2/422; E04C2/423; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/4962
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A grating comprising a plurality of first bars and a plurality of second bars and a plurality of intersections of said first and second bars; said first and second bars each including edges, one said edge of each said first bar including first slots, and one said edge of each said second bar including second slots; each said first bar including preformed deformable arms adjacent said first slots in said first bar; each said second bar including recesses adjacent said second slots in said second bar; each intersection including aligned and interfitted first and second slots of said first and second bars, said first slot of said first bar receiving said second bar, the second slot of said second bar receiving said first bar, and one of said deformable arms being deformably crimped to extend in locking engagement into one of said recesses.
Claim 2
Dependent Claim
143 words
A grating comprising a plurality of first bars and a plurality of second bars and a plurality of intersections of said first and second bars; said first and second bars each including edges, one said edge of each said first bar including first slots, and one said edge of each said second bar including second slots; each said first bar including preformed deformable arms adjacent said first slots in said first bar; each said second bar including recesses adjacent said second slots in said second bar; each intersection including aligned and interfitted first and second slots of said first and second bars, said first slot of said first bar receiving said second bar, the second slot of said second bar receiving said first bar, and one of said deformable arms being deformably crimped to extend in locking engagement into one of said recesses.
Claim 3
Dependent Claim
72 words
A grating as claimed in claim 1 , each said first bar including a pair of said preformed deformable arms flanking each said first slot in said first bar; each said second bar including an opposed pair of said recesses adjacent each said second slot in said second bar; and each intersection including a pair of said deformable arms crimped to extend in locking engagement into said opposed pair of said recesses.
Claim 4
Dependent Claim
34 words
A grating as claimed in claim 2 , said second bars having opposed side surfaces, said opposed pairs of recesses being defined by openings extending through said second bars between said opposed side surfaces.
Claim 5
Dependent Claim
44 words
A grating as claimed in claim 3 , each said second bar having a second edge opposite said one edge edges of said second bar, said second edges of said second bars and said edges of said first bars being in a common plane.
Claim 6
Dependent Claim
31 words
A grating as claimed in claim 2 , said each said first slot of said first bar being defined at least in part by said flanking pair of preformed deformable arms.
Claim 7
Independent Claim
105 words
A method of making a grating comprising the steps of; aligning slots in edges of first bars with slots in edges of second bars at intersections of the first and second bars; preforming deformable arms on the first bars adjacent the slots of the first bars; moving the first and second bars together to mate the slots so that the slots of each bar receive the other bar; and after said moving, crimping the preformed deformable arms adjacent the slots of the first bars into openings adjacent the slots in the second bars by a crimping tool to interlock the first and second bars together.
Claim 8
Independent Claim
105 words
A method of making a grating comprising the steps of; aligning slots in edges of first bars with slots in edges of second bars at intersections of the first and second bars; preforming deformable arms on the first bars adjacent the slots of the first bars; moving the first and second bars together to mate the slots so that the slots of each bar receive the other bar; and after said moving, crimping the preformed deformable arms adjacent the slots of the first bars into openings adjacent the slots in the second bars by a crimping tool to interlock the first and second bars together.
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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) | 2007-02-23 | 2007-08-25 | 2008-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-23 | 2011-08-25 | 2012-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-02-23 | 2015-08-25 | 2016-02-24 | $7700.00 | Window Closed / Lapsed |