Patent US5010979A successfully refreshed from Google Patents.
US5010979A
Expired / Lapsed
US
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Ladder stabilizing device
Assignee: Individual
•
Filing: 1990-01-30
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Granted: 1991-04-30
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Expires: 2010-01-30
Abstract
Abstract An improved ladder stabilizing device for supporting a ladder a spaced distance away from a substantially vertical surface is disclosed. The device of the present invention includes a U-shaped support bar which forms two parallel legs, the ends of which rest against the substantially vertical surface. The support bar is attached to a leveling device consisting essentially of a U-shaped channel. The ends of the leveling device rest against the side rails of the ladder and the support bar engages the U-shaped channel. The leveling device and the support bar are simultaneously attached to the side rails of the ladder. The stabilizing device is easily removable and holds the ladder a distance from the substantially vertical surface to provide a safe angle of support.
Inventors
- 👤 Arthur L. Shreve, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:29
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
An improved ladder stabilizing device for supporting a ladder adjacent to a substantially vertical surface, of the type in which a ladder having a pair of generally parallel side rails connected by a plurality of transverse ladder rungs therebetween, is held by a first supporting means for supporting said ladder at a spaced distance from the said surface, and a second supporting means for removably clamping said first means to said ladder, and a third supporting means, wherein the improved third supporting means comprises: a generally U-shaped member having parallel opposing sides positioned at oblique angles to a bottom of said member, an inside of said U-shaped member being shaped to receive and substantially engage and hold the said first supporting means parallel to the sides of the third supporting means and at right angles to the said vertical surface.
Claim 2
Dependent Claim
140 words
An improved ladder stabilizing device for supporting a ladder adjacent to a substantially vertical surface, of the type in which a ladder having a pair of generally parallel side rails connected by a plurality of transverse ladder rungs therebetween, is held by a first supporting means for supporting said ladder at a spaced distance from the said surface, and a second supporting means for removably clamping said first means to said ladder, and a third supporting means, wherein the improved third supporting means comprises: a generally U-shaped member having parallel opposing sides positioned at oblique angles to a bottom of said member, an inside of said U-shaped member being shaped to receive and substantially engage and hold the said first supporting means parallel to the sides of the third supporting means and at right angles to the said vertical surface.
Claim 3
Dependent Claim
26 words
The improved ladder stabilizing device is in claim 1 wherein the inside of said U-shaped member has a shape to fittingly engage the first supporting means.
Claim 4
Dependent Claim
104 words
The improved ladder stabilizing device as in claim 1 wherein the inside of the U-shaped member has a shape comprising: the parallel opposing sides positioned at an oblique angle to a bottom of said member each said side having an inwardly directed step, the steps forming inner shoulder surfaces, the surfaces being in the same plane and perpendicular to the parallel sides of said U-shaped member, the U-shaped member receiving and surrounding three sides of said first supporting means and holding the first supporting means parallel to the sides of the third supporting means and at substantially right angles to the said vertical surface.
Claim 5
Dependent Claim
23 words
The improved ladder stabilizing device as in claim 3 comprising means for immovably attaching the first supporting means to the third supporting means.
Claim 6
Dependent Claim
34 words
The improved ladder stabilizing device as in claim 4 wherein the means for attaching comprises pins inserted through aligned holes in the first and third supporting means and held in place with securing means.
Claim 7
Dependent Claim
26 words
The improved ladder stabilizing device as in claim 5 wherein the securing means comprises clips removably inserted through transverse holes in the ends of the pins.
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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) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |