Patent US4988090A successfully refreshed from Google Patents.
US4988090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable, safety, play furniture assembly
Assignee: Individual
•
Filing: 1989-03-23
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Granted: 1991-01-29
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Expires: 2009-03-23
Abstract
Abstract A portable, safety, play furniture assembly with a relatively lightweight chair body (10) and a chair base (12) for supporting the chair body (10) against rolling or tipping. The chair body (10) has a smooth, closed, concave, preferably cylindrical interior surface (14) and a depth (10) which is approximately no less than half of the width or diameter (18) of the body (10). The chair base 12 has legs (24A, 24B) with feet (26A, 26B) that are part of a single planar foot (26C) which substantially underlies the entire chair body (10) and spans the depth (16) to reduce the risk of tipping. The bottom of the foot has a roughened surface (26D) to reduce the risk of sliding across a floor (28). In an alternate embodiment, cavities (36A, 36B) are provided to hold ballast and empty buffer zones (40) are provided in the upper part of the chair body (10) to increase stability. The assembly is molded as a single integrated piece, preferably using rotational molding.
Inventors
- 👤 Marcella H. Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:38
CPC Classifications
A; A47; A47D; A47D13/00; A63; A63B; A63B19/00; A63B19/04; A63B2208/00; A63B2208/12
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
164 words
A portable, safety, play furniture assembly, comprising: a relatively light weight chair body having a smooth, glass-like, impact and splinter resistant, closed, concave interior surface with a portion for underlying supporting of a person and a width measured between opposed portions for lateral supporting of a person reposing therein, said interior surface body having a depth which is approximately one-half that of the width, and an exterior surface connected to and protectively surrounding said smooth, glass-like, closed, concave interior surface; and a chair base for supporting the chair body against rolling and tipping, said chair base having legs with feet for engagement with an underlying floor, and means for mounting said legs to the outer surface of the cylindrical body with said feet spaced from each other at opposite sides of the interior surface by a minimum distance approximately equal to the width of the interior surface, said feet substantially spanning at least the entire depth of the interior surface to protect against tipping.
Claim 2
Dependent Claim
164 words
A portable, safety, play furniture assembly, comprising: a relatively light weight chair body having a smooth, glass-like, impact and splinter resistant, closed, concave interior surface with a portion for underlying supporting of a person and a width measured between opposed portions for lateral supporting of a person reposing therein, said interior surface body having a depth which is approximately one-half that of the width, and an exterior surface connected to and protectively surrounding said smooth, glass-like, closed, concave interior surface; and a chair base for supporting the chair body against rolling and tipping, said chair base having legs with feet for engagement with an underlying floor, and means for mounting said legs to the outer surface of the cylindrical body with said feet spaced from each other at opposite sides of the interior surface by a minimum distance approximately equal to the width of the interior surface, said feet substantially spanning at least the entire depth of the interior surface to protect against tipping.
Claim 3
Dependent Claim
37 words
The portable, safety, play furniture assembly of claim 1 in which said smooth, glass-like, closed, concave interior surface is substantially cylindrical, and the distance between said opposed lateral supporting surfaces is a diameter of the interior surface.
Claim 4
Dependent Claim
22 words
The portable, safety, play furniture assembly of claim 2 in which the diameter of said cylindrical interior surface is approximately thirty inches.
Claim 5
Dependent Claim
23 words
The portable, safety, play furniture assembly of claim 3 in which the depth of interior cylindrical surface is approximately fifteen to eighteen inches.
Claim 6
Dependent Claim
24 words
The portable, safety, play furniture assembly of claim 2 in which the depth of the interior cylindrical surface is approximately fifteen to eighteen inches.
Claim 7
Dependent Claim
32 words
The portable, safety, play furniture assembly of claim 2 in which said exterior surface is at least partially cylindrical and has a center axis coincident with that of the interior cylindrical surface.
Claim 8
Dependent Claim
68 words
The portable, safety, play furniture assembly of claim 1 in which said smooth, glass-like, substantially closed, concave surface is made of smooth impact resistant plastic with a coefficient of friction sufficiently low to enable a clothed person to slide their body up along one of the opposed portions with their feet pressed against at least one of the underlying support portion and the other opposed vertical support portion.
Claim 9
Dependent Claim
18 words
The portable, safety, play furniture assembly of claim 7 in which said plastic is polyethylene and the like.
Claim 10
Dependent Claim
21 words
The portable, safety, play furniture assembly of claim 7 in which said plastic is made without seams on said interior surface.
Claim 11
Dependent Claim
19 words
The portable, safety, play furniture assembly of claim 1 in which said legs and feet are integrally formed together.
Claim 12
Dependent Claim
24 words
The portable, safety, play furniture assembly of claim 1 in which said chair body and said chair base are integrally formed together of plastic.
Claim 13
Dependent Claim
19 words
The portable, safety, play furniture assembly of claim 11 in which said chair base is solid and without cavities.
Claim 14
Dependent Claim
45 words
The portable, safety, play furniture assembly of claim 1 in which an empty buffer space is provided between the smooth, glass-like, interior surface and the exterior surface to protect the interior surface and to relatively reduce the weight of the chair body for increased stability.
Claim 15
Dependent Claim
27 words
The portable, safety, play furniture assembly of claim 13 in which said relatively light weight chair body includes support members located intermediate the interior and exterior surfaces.
Claim 16
Dependent Claim
41 words
The portable, safety, play furniture assembly of claim 1 in which said feet comprise different foot portions of a substantially planar foot underlying substantially the entire chair body for improved frictional engagement with an underlying floor surface to protect against sliding.
Claim 17
Dependent Claim
23 words
The portable, safety, play furniture assembly of claim 15 in which said planar foot is wider than the depth of said interior surface.
Claim 18
Dependent Claim
23 words
The portable, safety, play furniture assembly of claim 16 in which said planar foot is longer than the width of said interior surface.
Claim 19
Dependent Claim
23 words
The portable, safety, play furniture assembly of claim 15 in which said planar foot is longer than the width of said interior surface.
Claim 20
Dependent Claim
47 words
The portable, safety, play furniture assembly of claim 1 in which said supporting system supports the lowest part of the underlying support portion of said interior surface at substantially the same level as that of the feet to reduce the risk of falling from the chair body.
Claim 21
Dependent Claim
26 words
The portable, safety, play furniture assembly of claim 1 in which said chair body and chair base form a substantially continuous surface without gaps or crevices.
Claim 22
Dependent Claim
178 words
A portable, safety, play furniture assembly, comprising: a relatively light weight chair body having a smooth, glass-like, impact and splinter resistant, closed, concave interior surface with a portion for underlying supporting of a person and a width measured between opposed portions for lateral supporting of a person reposing therein, said interior surface body having a depth which is approximately one-half that of the width, and an exterior surface connected to and protectively surrounding said smooth, glass-like, concave interior surface; and a chair base for supporting the chair body against rolling and tipping, said chair base having legs with feet for engagement with an underlying floor, a chamber for receipt of ballast to selectively increase the stability of the chair body, and means for mounting said legs to the outer surface of the cylindrical body with said feet spaced from each other at opposite sides of the interior surface by a minimum distance approximately equal to the width of the interior surface, said feet substantially spanning at least the entire depth of the interior surface to protect against tipping.
Claim 23
Dependent Claim
178 words
A portable, safety, play furniture assembly, comprising: a relatively light weight chair body having a smooth, glass-like, impact and splinter resistant, closed, concave interior surface with a portion for underlying supporting of a person and a width measured between opposed portions for lateral supporting of a person reposing therein, said interior surface body having a depth which is approximately one-half that of the width, and an exterior surface connected to and protectively surrounding said smooth, glass-like, concave interior surface; and a chair base for supporting the chair body against rolling and tipping, said chair base having legs with feet for engagement with an underlying floor, a chamber for receipt of ballast to selectively increase the stability of the chair body, and means for mounting said legs to the outer surface of the cylindrical body with said feet spaced from each other at opposite sides of the interior surface by a minimum distance approximately equal to the width of the interior surface, said feet substantially spanning at least the entire depth of the interior surface to protect against tipping.
Claim 24
Dependent Claim
19 words
The portable, safety, play furniture assembly of claim 1 in which said chair base is solid throughout without cavities.
Claim 25
Dependent Claim
36 words
The portable, safety, play furniture assembly of claim 1 in which said chair body and chair base have edges and corners and substantially all said edges and corners are substantially rounded to protect against accidental injury.
Claim 26
Dependent Claim
25 words
The portable, safety, play furniture assembly of claim 1 in which said feet have roughened bottom surfaces to maximize frictional engagement with a floor surface.
Claim 27
Dependent Claim
27 words
The portable, safety, play furniture assembly of claim 1 in which said chair body includes a plate closing an opening on one side of said interior surface.
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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) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |