US4069893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder stabilizer and leveler
Assignee: Individual
•
Filing: 1976-11-18
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Granted: 1978-01-24
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Expires: 1996-11-18
Abstract
Abstract A ladder stabilizing support which is easily attachable to a ladder leg and provides two points of support on the ground or other supporting surface is disclosed. The support is provided with adjustable legs to accommodate uneven ground or other surface thereby improving stability on uneven surface. The support is fabricated in a truncated "A" shape and provides twisting resistance.
Inventors
- 👤 Charles David Blackstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:21
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A detachable bipod attachment for attachment to one leg of a ladder for stabilizing a ladder comprising: a rigid frame means; a pair of extensible legs supporting said frame means, said legs individually extensible with respect to said frame and carrying thereon an adjustment and load bearing member; pivotable foot means attached to one end of each of said extensible legs; said pivotal foot means having non-slip surfaces on the support surface thereof; means for rigidly attaching said frame means to one leg of a ladder in a plane substantially perpendicular to the plane of the legs of said ladder, thereby supporting said extensible legs to engage a surface upon which said ladder and said attachment will rest.
Claim 2
Dependent Claim
118 words
A detachable bipod attachment for attachment to one leg of a ladder for stabilizing a ladder comprising: a rigid frame means; a pair of extensible legs supporting said frame means, said legs individually extensible with respect to said frame and carrying thereon an adjustment and load bearing member; pivotable foot means attached to one end of each of said extensible legs; said pivotal foot means having non-slip surfaces on the support surface thereof; means for rigidly attaching said frame means to one leg of a ladder in a plane substantially perpendicular to the plane of the legs of said ladder, thereby supporting said extensible legs to engage a surface upon which said ladder and said attachment will rest.
Claim 3
Dependent Claim
57 words
The ladder stabilizing attachment of claim 1 wherein said rigid frame means comprises a pair of support members and a pair of tubular members, said support members laterally spacing apart said tubular members to form a rigid frame said tubular members comprising a lower end thereof for load bearing engagement with said adjustment and load bearing member.
Claim 4
Dependent Claim
14 words
The ladder stabilizing attachment of claim 2 wherein said frame is trapazoidal in shape.
Claim 5
Dependent Claim
18 words
The ladder stabilizing attachment of claim 3 wherein said tubular members of said frame encompass said extensible legs.
Claim 6
Dependent Claim
16 words
The ladder stabilizing attachment of claim 1 wherein said means for attaching comprises a clamping means.
Claim 7
Dependent Claim
27 words
The ladder stabilizing attachment of claim 5 wherein said means for attaching comprise a load bearing member engageable with the underside of a step of said ladder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |