US4423797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder leveling device
Assignee: Individual
•
Filing: 1982-02-01
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Granted: 1984-01-03
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Expires: 2002-02-01
Abstract
Abstract A device for leveling a ladder is disclosed which comprises a leveler guide with a hollow section which is secured to the lower portion of the ladder, a leveler leg which is sized and shaped to fit within the hollow section of the leveler guide, a plurality of guide openings spaced apart a pre-determined distance extending horizontally through the hollow portion of the leveler guide, a plurality of leg openings spaced apart a pre-determined distance extending horizontally through the leveler leg, and a securing apparatus sized and shaped to fit through the plurality of guide openings and through the plurality of leg openings in order to rigidly secure the device to the ladder.
Inventors
- 👤 Lloyd E. Batten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:07
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
172 words
A device for leveling a ladder comprising: a. a leveler guide with a hollow section secured to the lower portion of said ladder; b. a leveler leg sized and shaped to fit within said hollow section of said leveler guide; c. a plurality of guide openings spaced apart a pre-determined distance comprising four guide openings which are consecutively spaced apart one-half inch, three-quarters inch, and one-half inch extending horizontally through said hollow portion of said leveler guide; d. a plurality of leg openings spaced apart a pre-determined distance of one inch extending horizontally through said leveler leg; and e. securing means sized and shaped to fit through one of a plurality of guide openings and through one of said plurality of leg openings when said leveler leg is placed within said hollow section of said leveler guide, and operative to secure said leveler leg rigidly to said leveler guide and, thereby, to said ladder, whereas said ladder can be raised or lowered specific distances as small as one-quarter inch in finite adjustments.
Claim 2
Independent Claim
172 words
A device for leveling a ladder comprising: a. a leveler guide with a hollow section secured to the lower portion of said ladder; b. a leveler leg sized and shaped to fit within said hollow section of said leveler guide; c. a plurality of guide openings spaced apart a pre-determined distance comprising four guide openings which are consecutively spaced apart one-half inch, three-quarters inch, and one-half inch extending horizontally through said hollow portion of said leveler guide; d. a plurality of leg openings spaced apart a pre-determined distance of one inch extending horizontally through said leveler leg; and e. securing means sized and shaped to fit through one of a plurality of guide openings and through one of said plurality of leg openings when said leveler leg is placed within said hollow section of said leveler guide, and operative to secure said leveler leg rigidly to said leveler guide and, thereby, to said ladder, whereas said ladder can be raised or lowered specific distances as small as one-quarter inch in finite adjustments.
Claim 3
Dependent Claim
32 words
A device according to claim 1 further comprising foot means removably secured to said leveler leg and operative to connect said leveler leg to the surface upon which said ladder is resting.
Claim 4
Dependent Claim
20 words
A device according to claim 2 wherein said foot means is connected in a swivel manner to said leveler leg.
Claim 5
Dependent Claim
49 words
A device according to claim 3 wherein said leveler leg has a clearance opening in the bottom of said leveler leg in order to provide clearance for said foot means which may require such clearance in order to be removably attached in said swivel manner to said leveler leg.
Claim 6
Dependent Claim
66 words
A device according to claim 1 wherein said leveler guide comprises an outer portion which is secured to the lower portion of said ladder, and an inner portion which forms a portion of the inner wall of said hollow section and isolates said leveler leg from said lower portion of said ladder when said leveler leg is placed within said hollow section of said leveler guide.
Claim 7
Dependent Claim
26 words
A device according to claim 5 wherein said plurality of guide openings extends horizontally through said outer portion and said inner portion of said leveler guide.
Claim 8
Dependent Claim
51 words
A device according to claim 1 further comprising retaining means, sized and shaped to be placed onto said securing means, and operative to retain said securing means in a securing position and to release, when desired, said securing means whereby the position of said leveler leg can be moved as desired.
Claim 9
Dependent Claim
47 words
A device according to claim 1 further comprising an insert adaptor operative to be secured between said leveler guide and said lower portion of said ladder when said lower portion of said ladder is shaped in a manner that said leveler guide cannot be directly secured thereto.
Claim 10
Dependent Claim
31 words
A device according to claim 8 wherein said lower portion of said ladder is shaped in an I-beam configuration and said insert adaptor is shaped to fit within said I-beam configuration.
Claim 11
Dependent Claim
31 words
A device according to claim 9 wherein said insert adaptor may be secured apart from the base of said I-beam configuration by being secured to the sides of said I-beam configuration.
Claim 12
Dependent Claim
34 words
A device according to claim 9 wherein said insert adaptor may be secured apart from said base of said I-beam configuration by being secured to the base of said I-beam configuration through spacer means.
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) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |