Patent US3703971A successfully refreshed from Google Patents.
US4577901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible utility chair
Assignee: Individual
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Filing: 1985-04-30
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Granted: 1986-03-25
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Expires: 2005-04-30
Abstract
Abstract A convertible utility chair includes a frame structure comprising a number of frame elements of preselected shapes for providing, when folded, a compact, transportable carry-all including ample open volume for storage purposes. Frame elements are joined to one another by rivets and subassemblies that allow the conversion from chair to carry-all configuration by a simple application of manual pressure.
Inventors
- 👤 Mark R. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:38
CPC Classifications
A; A47; A47C; A47C5/00; A47C5/04; A47C5/10; A47C4/00; A47C4/02; A47C4/03; A47C4/04; A47C4/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A chair that is convertible into a carry-all comprising, in combination: (a) a tubular, substantially U-shaped back frame; (b) a back panel, said panel being supported by said back frame; (c) a tubular seat frame having a substantially U-shape and including portions spaced from said generally U-shape defining armrests, said last-named frame being pivotally jointed to said back frame; (d) a seat panel, said panel being supported by said seat frame; (e) arm panels, said panels being supported by said seat frame; (f) a tubular front leg base frame having a generally U-shape, said last-named frame being pivotally joined to said back frame; and (g) a tubular rear leg base frame having a generally U-shape, said last-named frame being pivotally joined to said back frame.
Claim 2
Dependent Claim
125 words
A chair that is convertible into a carry-all comprising, in combination: (a) a tubular, substantially U-shaped back frame; (b) a back panel, said panel being supported by said back frame; (c) a tubular seat frame having a substantially U-shape and including portions spaced from said generally U-shape defining armrests, said last-named frame being pivotally jointed to said back frame; (d) a seat panel, said panel being supported by said seat frame; (e) arm panels, said panels being supported by said seat frame; (f) a tubular front leg base frame having a generally U-shape, said last-named frame being pivotally joined to said back frame; and (g) a tubular rear leg base frame having a generally U-shape, said last-named frame being pivotally joined to said back frame.
Claim 3
Dependent Claim
46 words
A chair as defined in claim 1 further characterized in that: (a) said rear leg base frame is pivotally and slidably mounted with respect to said seat frame; and (b) said front leg base frame is pivotally and slidably mounted with respect to said seat frame.
Claim 4
Dependent Claim
56 words
A chair as defined in claim 2 further characterized in that: (a) said generally U-shaped tubular front leg base frame includes two sides, each of two substantially straight portions joined at a bend; and (b) said generally U-shaped tubular rear leg base frame includes two sides, each of two substantially straight portions joined at a bend.
Claim 5
Dependent Claim
26 words
A chair as defined in claim 3 wherein said back frame is pivotally joined to said seat frame at the arm-rest portions of said seat frame.
Claim 6
Dependent Claim
72 words
A chair as defined in claim 4 further characterized in that: (a) said front leg base frame is pivotally joined to said back frame at a point beneath that at which said armrests are pivotally joined to said back frame; and (b) said rear leg base frame is pivotally joined to said back frame at a point beneath that at which said front leg base frame is joined to said back frame.
Claim 7
Dependent Claim
15 words
A chair as defined in claim 5 further including a harness for carrying said chair.
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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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |