US4097089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair assembly for an incremental plating having a telescoping sleeve-like construction
Assignee: BURD Inc HOWELL DIV
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Filing: 1976-11-08
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Granted: 1978-06-27
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Expires: 1996-11-08
Abstract
Abstract Chair frames are formed from identical tubular frame components having tubular studs projecting laterally therefrom in a mirror image arrangement and crimped to telescope into the ends of tubular stretcher members. The crimped portions of the studs provide two abutting walls increasing the anchoring capacity for stretcher carried screw fasteners which are threaded therein to lock the stretchers to the studs. The ends of the stretchers abut the frame to cover any weld beads joining the studs to the frames. All of the tubular components are electroplated.
Inventors
- 👤 Warren D. Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:49
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/021; A47C3/023; A47C4/00; A47C4/02; A47C4/03; A47C5/00; A47C5/04; A47C5/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
317 words
A chair frame which comprises a pair of tubular end frames each formed from a single piece of bent metal tubing of generally C shape with a bottom horizontal front to rear portion, an upstanding rearwardly sloping front leg portion at the front end of the bottom portion, a rearwardly extending horizontal seat support portion at the upper end of said front leg portion terminating in a free end, a forwardly sloping upstanding rear leg portion at the rear end of the horizontal bottom portion projecting above the free end of said horizontal seat supporting portion and inclined rearwardly at its top end to form a back support portion, tubular studs welded to said front and rear leg portions of each end frame and projecting laterally therefrom, the studs on one end frame being in mirror image relation with the studs on the other end frame, said tubular studs being crimped into a flattened configuration with front and rear side walls abutted together between the arcuate top and bottom portions of the tubes, front and rear tubular stretchers between said end frames having hollow ends telescoped over the respective crimped studs on the front and rear leg portions of said frame in snug engagement with the arcuate top and bottom portions of the studs and abutted against the inner faces of said leg portions, screws extending through the back sides of said tubular stretchers threaded into both of the abutted side walls of said crimped studs, said rearwardly extending horizontal portions on the upper ends of the front legs of each end frame having flange members projecting in the same directions as said studs on the frame members, a seat secured on said flanges spanning the space between the end frames, and a back member mounted on the rearwardly inclined portions of the upstanding rear legs of said end frames in spaced relation above said seat member.
Claim 2
Dependent Claim
317 words
A chair frame which comprises a pair of tubular end frames each formed from a single piece of bent metal tubing of generally C shape with a bottom horizontal front to rear portion, an upstanding rearwardly sloping front leg portion at the front end of the bottom portion, a rearwardly extending horizontal seat support portion at the upper end of said front leg portion terminating in a free end, a forwardly sloping upstanding rear leg portion at the rear end of the horizontal bottom portion projecting above the free end of said horizontal seat supporting portion and inclined rearwardly at its top end to form a back support portion, tubular studs welded to said front and rear leg portions of each end frame and projecting laterally therefrom, the studs on one end frame being in mirror image relation with the studs on the other end frame, said tubular studs being crimped into a flattened configuration with front and rear side walls abutted together between the arcuate top and bottom portions of the tubes, front and rear tubular stretchers between said end frames having hollow ends telescoped over the respective crimped studs on the front and rear leg portions of said frame in snug engagement with the arcuate top and bottom portions of the studs and abutted against the inner faces of said leg portions, screws extending through the back sides of said tubular stretchers threaded into both of the abutted side walls of said crimped studs, said rearwardly extending horizontal portions on the upper ends of the front legs of each end frame having flange members projecting in the same directions as said studs on the frame members, a seat secured on said flanges spanning the space between the end frames, and a back member mounted on the rearwardly inclined portions of the upstanding rear legs of said end frames in spaced relation above said seat member.
Claim 3
Dependent Claim
92 words
A chair comprising a pair of laterally spaced bent tube end frames having inwardly projecting tubular studs welded thereto with flattened crimped portions, tubular stretcher members having hollow ends telescoped over said studs and bottomed against said end frame members, fasteners projecting from said stretcher members threaded into two side walls of the crimped studs, said end frames and stretcher members forming a rigid chair frame with the ends of the stretcher members abutting the end frames around the studs and covering the weld zone securing the studs to the end frames.
Claim 4
Dependent Claim
92 words
A chair comprising a pair of laterally spaced bent tube end frames having inwardly projecting tubular studs welded thereto with flattened crimped portions, tubular stretcher members having hollow ends telescoped over said studs and bottomed against said end frame members, fasteners projecting from said stretcher members threaded into two side walls of the crimped studs, said end frames and stretcher members forming a rigid chair frame with the ends of the stretcher members abutting the end frames around the studs and covering the weld zone securing the studs to the end frames.
Claim 5
Dependent Claim
112 words
A chair frame comprising a pair of bent tube end frames having upright leg portions, back portions, and seat portions, studs welded to the inner faces of the leg portions at a level under the seat portions, hollow tubular stretcher members having end portions telescoped over said studs and abutted against the inner faces of said leg portions around the weld areas connecting the studs to the leg portions, an electroplate surface on said end frames, said studs, and said stretcher members, said tubular studs being crimped to slidably fit in said stretcher members, and fasteners projecting through said stretcher members threaded through two walls of the crimped portions of the studs.
Claim 6
Dependent Claim
112 words
A chair frame comprising a pair of bent tube end frames having upright leg portions, back portions, and seat portions, studs welded to the inner faces of the leg portions at a level under the seat portions, hollow tubular stretcher members having end portions telescoped over said studs and abutted against the inner faces of said leg portions around the weld areas connecting the studs to the leg portions, an electroplate surface on said end frames, said studs, and said stretcher members, said tubular studs being crimped to slidably fit in said stretcher members, and fasteners projecting through said stretcher members threaded through two walls of the crimped portions of the studs.
Claim 7
Dependent Claim
21 words
The chair of claim 1 including an electroplate finish surface layer covering said end frames, said studs, and said stretcher members.
Claim 8
Dependent Claim
40 words
The chair of claim 1 wherein the tubular stretcher members have an oval cross section with a vertical major axis and the crimped portions of the studs have a conforming configuration slidably fitting into the ends of said stretcher members.
Claim 9
Dependent Claim
29 words
The chair frame of claim 2 wherein the tubes forming the studs and the stretcher members have an oval cross section with the major axes thereof in upright planes.
Claim 10
Dependent Claim
34 words
The chair frame of claim 2 wherein each end frame is a single tube bent to form a seat support, a front leg, a horizontal bottom, a rear leg and an upright back support.
Claim 11
Dependent Claim
33 words
The chair frame of claim 2 wherein the tubular studs each have an oval configuration with a vertical major axes and each stretcher member has a conforming oval configuration snugly engaging the stud.
Claim 12
Dependent Claim
41 words
The chair frame of claim 3 wherein the crimped studs have the side walls abutted together close to the rear sides of the stretcher members to allow the fasteners to project through the abutted side walls without piercing the stretcher members.
Claim 13
Dependent Claim
16 words
The chair frame of claim 3 wherein the fasteners are screws threaded through said two walls.
Claim 14
Dependent Claim
18 words
The chair frame of claim 3 wherein the bent tubes of the end frames have oval cross sections.
References Cited (Backward Citations)
GB376251A
Cited
US3874729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |