Patent US4913252A successfully refreshed from Google Patents.
Patent US4991691A successfully refreshed from Google Patents.
US4991691A
Expired / Lapsed
US
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Stair barrier
Assignee: Individual
•
Filing: 1990-06-22
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Granted: 1991-02-12
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Expires: 2010-06-22
Abstract
Abstract A portable stair barrier intended to prevent very young children from climbing up a stairway is formed by a ramp having support members adapted for rest on the stairway, wherein the ramp bridges over one or more stairs when deployed.
Inventors
- 👤 David B. Brawer
- 👤 Michael I. Hauptman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:29
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/002; E04F2011/005
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
81 words
A stair barrier comprising: a planar member to be inclined over treads of stairs on a stairway, said planar member having a width dimension sufficient to block passage of a child up the stairway, and a length dimension sufficient for superposition over at least two stairs, said stair barrier further comprising at least one support member on the underside of said planar member, said support member having a height dimension sufficient to support the planar member at rest on the stairway.
Claim 2
Dependent Claim
81 words
A stair barrier comprising: a planar member to be inclined over treads of stairs on a stairway, said planar member having a width dimension sufficient to block passage of a child up the stairway, and a length dimension sufficient for superposition over at least two stairs, said stair barrier further comprising at least one support member on the underside of said planar member, said support member having a height dimension sufficient to support the planar member at rest on the stairway.
Claim 3
Dependent Claim
29 words
The stair barrier of claim 1, wherein the stair barrier comprises at least two support members at a space from each other on the underside of said planar member.
Claim 4
Dependent Claim
24 words
The stair barrier of claim 1, wherein the stair barrier is adjustable in at least one of the dimensions of width, length, and height.
Claim 5
Dependent Claim
14 words
The stair barrier of claim 1, wherein the stair barrier is adjustable in width.
Claim 6
Dependent Claim
103 words
A stair barrier comprising: a planar member having a sliding surface to be disposed over a portion of a stairway, said planar member having a width dimension sufficient to block passage of a child up the stairway, and a length dimension sufficient for superposition over at least two stairs, said planar member comprising an upper panel, a lower panel, and articulation means between said upper and lower panels, said stair barrier further comprising at least one support member on the underside of said planar member, said support member having a height dimension sufficient to support the planar member at rest on a stairway.
Claim 7
Dependent Claim
103 words
A stair barrier comprising: a planar member having a sliding surface to be disposed over a portion of a stairway, said planar member having a width dimension sufficient to block passage of a child up the stairway, and a length dimension sufficient for superposition over at least two stairs, said planar member comprising an upper panel, a lower panel, and articulation means between said upper and lower panels, said stair barrier further comprising at least one support member on the underside of said planar member, said support member having a height dimension sufficient to support the planar member at rest on a stairway.
Claim 8
Dependent Claim
29 words
The stair barrier of claim 5, wherein the stair barrier comprises at least two support members at a space from each other on the underside of said planar member.
Claim 9
Dependent Claim
13 words
The stair barrier of claim 5, wherein the articulation means is a hinge.
Claim 10
Dependent Claim
14 words
The stair barrier of claim 5, wherein the articulation means is a flexible material.
Claim 11
Dependent Claim
20 words
The stair barrier of claim 5, wherein at least one of the dimensions of width, length, and height is adjustable.
Claim 12
Dependent Claim
14 words
The stair barrier of claim 5, wherein the stair barrier is adjustable in width.
Claim 13
Dependent Claim
95 words
A stair barrier comprising: a planar member, said planar member having an adjustable width dimension, and an adjustable length dimension, said planar member comprising an upper panel, a lower panel, and articulation means between said upper and lower panels, said stair barrier further comprising at least one support member on the underside of said planar member, said support member having an adjustable height dimension, whereby the stair barrier can be adjusted to stairways of different dimensions such that the planar member is inclined to cover at least one complete riser and tread of the stairway.
Claim 14
Dependent Claim
95 words
A stair barrier comprising: a planar member, said planar member having an adjustable width dimension, and an adjustable length dimension, said planar member comprising an upper panel, a lower panel, and articulation means between said upper and lower panels, said stair barrier further comprising at least one support member on the underside of said planar member, said support member having an adjustable height dimension, whereby the stair barrier can be adjusted to stairways of different dimensions such that the planar member is inclined to cover at least one complete riser and tread of the stairway.
Claim 15
Dependent Claim
13 words
The stair barrier of claim 11, wherein the articulation means is a hinge.
Claim 16
Dependent Claim
14 words
The stair barrier of claim 11, wherein the articulation means is a flexible material.
Claim 17
Dependent Claim
18 words
The stair barrier of claim 11, wherein the upper and lower panels are telescopically attached to each other.
Claim 18
Dependent Claim
28 words
The stair barrier of claim 11, wherein the upper and lower panels each comprise a left hand member and a right hand member telescopically attached to each other.
Claim 19
Dependent Claim
42 words
The stair barrier of claim 11, wherein the upper and lower panels each comprise a left hand member and a right hand member slidably attached to each other, wherein the width dimension is adjustable by means comprising protrusions slidable in elongated slots.
Claim 20
Dependent Claim
42 words
The stair barrier of claim 11, wherein the support members are each comprised of an upper support member and a lower support member slidably attached to each other, wherein the height dimension is adjustable by means comprising protrusions slidable in elongated slots.
Claim 21
Dependent Claim
20 words
The stair barrier of claim 11, wherein the length dimension is adjustable by means comprising protrusions slidable in elongated slots.
Claim 22
Dependent Claim
18 words
The stair barrier of claim 11, wherein at least one said dimension is adjustable by means of telescoping.
Claim 23
Dependent Claim
28 words
The stair barrier of claim 11, wherein the support members are each comprised of an upper support member an a lower support member telescopically attached to each other.
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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) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |