US3882654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stress-Relieved Weldment for Box Sections
Assignee: Caterpillar Inc
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Filing: 1973-04-09
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Granted: 1975-05-13
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Expires: 1993-04-09
Abstract
Abstract A structural member, such as an excavator boom, comprises four plates forming a box section secured together at each corner thereof by a weldment comprising an L-shaped angle bar disposed within the box section and a weld which penetrates into each adjacent pair of plates and into an apex of the angle bar.
Inventors
- 👤 John W Yancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:25
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/38; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/043; E04C2003/0443; E04C2003/0465; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49625
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
A stress-relieved weldment comprising a pair of trasversely disposed first and second plates, with an edge of said second plate being disposed in edge facing relationship relative to the inner surfaces of said first plate, an L-shaped angle bar having first and second legs abutting inner surfaces of said first and second plates, respectively, the thickness of each of the legs of said angle bar being from one-eighth to one-third of the thickness of a respective one of said plates and common weld means securing said plates and said angle bar together wherein said weld means penetrates through said second plate and has a root that penetrates through an apex of said angle bar, joining the first and second legs thereof together, and into said first plate.
Claim 2
Dependent Claim
127 words
A stress-relieved weldment comprising a pair of trasversely disposed first and second plates, with an edge of said second plate being disposed in edge facing relationship relative to the inner surfaces of said first plate, an L-shaped angle bar having first and second legs abutting inner surfaces of said first and second plates, respectively, the thickness of each of the legs of said angle bar being from one-eighth to one-third of the thickness of a respective one of said plates and common weld means securing said plates and said angle bar together wherein said weld means penetrates through said second plate and has a root that penetrates through an apex of said angle bar, joining the first and second legs thereof together, and into said first plate.
Claim 3
Dependent Claim
33 words
The weldment of claim 1 wherein the root of said weld means penetrates into said first plate at a depth which is from one-eighth to one-third of the thickness of said first plate.
Claim 4
Dependent Claim
25 words
The weldment of claim 1 wherein the length of each of said legs is At least one-half of the thickness of a respective underlying member.
Claim 5
Dependent Claim
32 words
The weldment of claim 1 wherein four of said plates form a rectangular box section have four corners therof each secured by a said, L-shaped angle bar and a said weld means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |