US3682425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded base for chair or the like
Assignee: Art Metal US Corp
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Filing: 1971-01-11
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Granted: 1972-08-08
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Expires: 1991-01-11
Abstract
Abstract In a metal chair base of the type comprising an upright cylindrical hub and a plurality of legs radiating from the hub, each of the legs is a channel member containing a short channel section inserted within and welded to the leg, and also abutting and welded to the hub. The legs and hub may be chrome plated or otherwise finished before assembly of the legs to the hub, as welding of the channel sections to the hub does not cause visible weld marks or heat tarnishing of the plated hub and leg surfaces.
Inventors
- 👤 David H Vincent
- 👤 Rodney L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:19
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/002; A47C7/004; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/477
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
240 words
In a prefinished metal furniture base, the combination of a. a first member having a cylindrical surface; and b. a second member extending radially outwardly from said cylindrical surface and having one end abutting said cylindrical surface; wherein the improvement comprises c. said second member being a channel member having sides with longitudinal edges bent inwardly to form facing return flanges; d. a channel section received within the channel of said second member adjacent said one end thereof, the channel of said section opening in the same direction as the channel of said second member, said channel section having sides respectively weldedly secured to the return flanges of said second member; e. said second member and said channel section having webs diverging in the direction of said one end of said second member, such that the webs of said second member and said channel section are spaced apart at said one end of said second member; f. the end of said channel section facing said first member being offset with respect to said one end of said second member to conform to the curvature of said cylindrical surface so that both said last-mentioned end of said channel section and said one end of said second member engage said cylindrical surface; and g. said channel section being welded to said first member along the junction of the internal edge of said last-mentioned end of said channel section and said cylindrical surface.
Claim 2
Dependent Claim
240 words
In a prefinished metal furniture base, the combination of a. a first member having a cylindrical surface; and b. a second member extending radially outwardly from said cylindrical surface and having one end abutting said cylindrical surface; wherein the improvement comprises c. said second member being a channel member having sides with longitudinal edges bent inwardly to form facing return flanges; d. a channel section received within the channel of said second member adjacent said one end thereof, the channel of said section opening in the same direction as the channel of said second member, said channel section having sides respectively weldedly secured to the return flanges of said second member; e. said second member and said channel section having webs diverging in the direction of said one end of said second member, such that the webs of said second member and said channel section are spaced apart at said one end of said second member; f. the end of said channel section facing said first member being offset with respect to said one end of said second member to conform to the curvature of said cylindrical surface so that both said last-mentioned end of said channel section and said one end of said second member engage said cylindrical surface; and g. said channel section being welded to said first member along the junction of the internal edge of said last-mentioned end of said channel section and said cylindrical surface.
Claim 3
Dependent Claim
46 words
Structure as defined in claim 1, wherein said webs of said second member and said channel section are substantially planar, the edge of the web of said channel section remote from said hub engaging the inner surface of the second member web and being welded thereto.
Claim 4
Dependent Claim
260 words
In a prefinished metal furniture base, the combination of a. an axially vertical hub having a cylindrical surface; and b. a plurality of leg members spaced around and extending radially outwardly from said cylindrical surface and each having one end abutting said cylindrical surface; wherein the improvement comprises c. each of said leg members being a downwardly opening channel member having sides with longitudinal edges bent inwardly to form facing return flanges; d. a plurality of channel sections respectively received within the channels of said leg members adjacent said one end thereof, the channel of each said section opening downwardly, each said channel section having sides respectively weldedly secured to the return flanges of the leg member in which it is received; e. each of said leg members and its contained channel section having webs which diverge from each other in the direction of said hub, such that the webs of the leg member and the channel section are spaced apart at said one end of the leg member; f. the end of each said channel section facing said hub being offset with respect to said one end of the leg member in which the channel section is received to conform to the curvature of said cylindrical surface so that both said last-mentioned end of the channel section and said one end of the leg member engage said cylindrical surface; and g. each said channel section being welded to said hub along the junction of the internal edge of said last-mentioned end of the channel section and said cylindrical surface.
Claim 5
Dependent Claim
260 words
In a prefinished metal furniture base, the combination of a. an axially vertical hub having a cylindrical surface; and b. a plurality of leg members spaced around and extending radially outwardly from said cylindrical surface and each having one end abutting said cylindrical surface; wherein the improvement comprises c. each of said leg members being a downwardly opening channel member having sides with longitudinal edges bent inwardly to form facing return flanges; d. a plurality of channel sections respectively received within the channels of said leg members adjacent said one end thereof, the channel of each said section opening downwardly, each said channel section having sides respectively weldedly secured to the return flanges of the leg member in which it is received; e. each of said leg members and its contained channel section having webs which diverge from each other in the direction of said hub, such that the webs of the leg member and the channel section are spaced apart at said one end of the leg member; f. the end of each said channel section facing said hub being offset with respect to said one end of the leg member in which the channel section is received to conform to the curvature of said cylindrical surface so that both said last-mentioned end of the channel section and said one end of the leg member engage said cylindrical surface; and g. each said channel section being welded to said hub along the junction of the internal edge of said last-mentioned end of the channel section and said cylindrical surface.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |