US4852689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder leveling accessory
Assignee: Individual
•
Filing: 1987-11-13
•
Granted: 1989-08-01
•
Expires: 2007-11-13
Abstract
Abstract A leveling device for a ladder which includes a pair of rails, hollow rungs spanning the rails, and foot members pivotally attached to lower portions of the rails. A channel shaped leveling accessory slides on a first one of the rails. Spaced openings are provided in a web of the channel shaped accessory. A selected opening can be aligned with a selected rung. An elongated pin is received in the selected opening and extends through the hollow rung. At end portions of the pin member outboard of the rails and outboard of the channel shaped accessory, fasteners are mounted in the pin member to hold the channel shaped accessory in position. An accessory foot is pivotally mounted on the accessory below the first mentioned rail. The foot members are arranged to support the ladder in upright position.
Inventors
- 👤 George T. Erion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:17
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
240 words
The combination of a ladder which includes a pair of rails, at least one hollow rung spanning the rails, and a respective foot member pivotally attached to a lower portion of each of the rails with a generally channel shaped leveling accessory slideably mounted on one of the rails, the foot member pivotally attached to the rail upon which the accessory may be slideably mounted being swingable between a ladder supporting position transversely of the said rail and a storage position extending lengthwise of the said rail, the channel shaped accessory being slideable on the rail and receiving the foot member thereof when the foot member pivotally attached to the rail is in storage position, there being a plurality of spaced openings in a web of the channel shaped accessory alignable with the rung, an elongated pin received in a selected one of the openings and extending through the hollow rung, means at end portions of the pin member outboard of the channel shaped accessory and outboard of the other rail for preventing withdrawal of the pin member through the rung and the selected opening in the accessory, whereby the pin member holds the channel shaped accessory in position and an accessory foot pivotally mounted on the accessory below the said one of the rails, the foot member of the one rail and of the accessory mounted on the other rail being arranged to support the ladder in upright position.
Claim 2
Dependent Claim
240 words
The combination of a ladder which includes a pair of rails, at least one hollow rung spanning the rails, and a respective foot member pivotally attached to a lower portion of each of the rails with a generally channel shaped leveling accessory slideably mounted on one of the rails, the foot member pivotally attached to the rail upon which the accessory may be slideably mounted being swingable between a ladder supporting position transversely of the said rail and a storage position extending lengthwise of the said rail, the channel shaped accessory being slideable on the rail and receiving the foot member thereof when the foot member pivotally attached to the rail is in storage position, there being a plurality of spaced openings in a web of the channel shaped accessory alignable with the rung, an elongated pin received in a selected one of the openings and extending through the hollow rung, means at end portions of the pin member outboard of the channel shaped accessory and outboard of the other rail for preventing withdrawal of the pin member through the rung and the selected opening in the accessory, whereby the pin member holds the channel shaped accessory in position and an accessory foot pivotally mounted on the accessory below the said one of the rails, the foot member of the one rail and of the accessory mounted on the other rail being arranged to support the ladder in upright position.
Claim 3
Dependent Claim
274 words
The combination of a ladder which includes a pair of rails, a plurality of hollow rungs spanning the rails, and a respective foot member pivotally attached to a lower portion of each of the rails with a generally channel shaped leveling accessory slideably mounted on a first one of the rails, the foot member pivotally attached to the first one of the rails being swingeable between a ladder supporting position transversely of the said rail and a storage position extending lengthwise of the said rail, the channel shaped accessory being slideable on the rail and receiving the foot member thereof when the foot member povitally attached to the rail is in storage position and the accessory spans said foot member, there being a plurality of spaced openings in a web of the channel shaped accessory alignable with the hollows of the rungs, an elongated pin received in a selected one of the openings and extending through the associated hollow rung, means at end portions of the pin member outboard of the channel shaped accessory and outboard of a second one of the rails for preventing advancement of the pin member out of at least one of the rungs and the selected opening in the accessory to lock the accessory in place on the ladder, an accessory foot pivotally mounted on the accessory, whereby the pin member holds the channel shaped accessory in position with the accessory foot pivotally mounted on the accessory below the first mentioned rail, the foot member of the accessory and the foot member of the other rail being arranged to support the ladder in upright position on an uneven surface.
Claim 4
Dependent Claim
274 words
The combination of a ladder which includes a pair of rails, a plurality of hollow rungs spanning the rails, and a respective foot member pivotally attached to a lower portion of each of the rails with a generally channel shaped leveling accessory slideably mounted on a first one of the rails, the foot member pivotally attached to the first one of the rails being swingeable between a ladder supporting position transversely of the said rail and a storage position extending lengthwise of the said rail, the channel shaped accessory being slideable on the rail and receiving the foot member thereof when the foot member povitally attached to the rail is in storage position and the accessory spans said foot member, there being a plurality of spaced openings in a web of the channel shaped accessory alignable with the hollows of the rungs, an elongated pin received in a selected one of the openings and extending through the associated hollow rung, means at end portions of the pin member outboard of the channel shaped accessory and outboard of a second one of the rails for preventing advancement of the pin member out of at least one of the rungs and the selected opening in the accessory to lock the accessory in place on the ladder, an accessory foot pivotally mounted on the accessory, whereby the pin member holds the channel shaped accessory in position with the accessory foot pivotally mounted on the accessory below the first mentioned rail, the foot member of the accessory and the foot member of the other rail being arranged to support the ladder in upright position on an uneven 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) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |