Patent US5174412A successfully refreshed from Google Patents.
US5174412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder leveler
Assignee: Individual
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Filing: 1991-12-12
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Granted: 1992-12-29
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Expires: 2011-12-12
Abstract
Abstract A simple ladder leveling device which slides onto either leg (8) of a ladder. The device is secured onto the ladder by sliding underneath and around rungs of the ladder. Furthermore, the ladder leveler includes a channel sleeve (3) with a slidable intrack leg (5) for adjusting the ladder leveler to the length desired; the intrack leg (5) is secured onto the channel sleeve (3) by an insertable holding pine (10) traversing the intrack leg (5) and the channel sleeve (3).
Inventors
- 👤 Henry M. Vega
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:08
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
187 words
A ladder leveler device for attaching to a ladder comprising the parts of: a. rung support cup means, b. two side walls, each side wall having at least a pair of rung support cup means, c. a channel sleeve means, including pin holes in said channel sleeve means, d. an intrack leg, including intrack pin holes in said intrack leg, e. a pivot pin, f. a pivotable foot, pivotally connected to the intrack leg by the pivot pin, and g. a holding pin; wherein, said side walls are parallel to each other and are connected to said channel sleeve means; one rung support cup means of one side wall slides underneath and around the bottom rung of said ladder, and the other rung support cup means of said same side wall slides underneath and around the next to bottom rung of said ladder; an intrack leg with intrack pin holes slides in said channel sleeve means, and is secured onto and held in fixed relationship to said channel sleeve means by inserting said holding pin through an aligned intrack pin hole and channel sleeve means pin hole.
Claim 2
Dependent Claim
187 words
A ladder leveler device for attaching to a ladder comprising the parts of: a. rung support cup means, b. two side walls, each side wall having at least a pair of rung support cup means, c. a channel sleeve means, including pin holes in said channel sleeve means, d. an intrack leg, including intrack pin holes in said intrack leg, e. a pivot pin, f. a pivotable foot, pivotally connected to the intrack leg by the pivot pin, and g. a holding pin; wherein, said side walls are parallel to each other and are connected to said channel sleeve means; one rung support cup means of one side wall slides underneath and around the bottom rung of said ladder, and the other rung support cup means of said same side wall slides underneath and around the next to bottom rung of said ladder; an intrack leg with intrack pin holes slides in said channel sleeve means, and is secured onto and held in fixed relationship to said channel sleeve means by inserting said holding pin through an aligned intrack pin hole and channel sleeve means pin hole.
Claim 3
Dependent Claim
27 words
The ladder leveler of claim 1 wherein the distance between said rung support cup means is the same as the distance between said rungs of said ladder.
Claim 4
Dependent Claim
52 words
The ladder leveler of claim 1 wherein on side wall is on the left side of a ladder leg of said ladder and the other side wall is on the right side of a leg of said ladder when said rung support cup means is slid onto said leg of said ladder.
Claim 5
Dependent Claim
33 words
The ladder leveler of claim 3 wherein said side walls provide resistance to said ladder leaning to the left or the right when said rung support cup means is slid onto said ladder.
Claim 6
Dependent Claim
46 words
The ladder leveler of claim 1 further comprising a tapered cut on the bottom of said side walls, used to clear a foot on a leg of said ladder when said rung support cup means are slid underneath and around said bottom rungs of said ladder.
Claim 7
Dependent Claim
54 words
The ladder leveler of claim 1 further comprising a tapered cut on the bottom of said side walls, which allows a pivotable foot on a leg of said ladder to be cocked backward by said intrack leg when said rung support cup means are slid underneath and around said bottom rungs of said ladder.
Claim 8
Dependent Claim
217 words
A combination comprising a ladder leveler and a ladder, said ladder leveler comprising the parts of: a. a ladder leg sleeve means, having rung support cup means and a tapered cut on the bottom of said sleeve, b. an extension piece means, and c. an extension piece sleeve means, attached to said ladder leg sleeve means in a back to back fashion; wherein said extension piece means slides in the extension piece sleeve mean and may be fixed to said extension piece sleeve means; said ladder comprising two parallel legs connected by and perpendicular to a plurality of parallel rungs, and said legs each having a foot; wherein, said ladder leg sleeve means is attached to a leg of said ladder needing to be extended, by said rung support cup means of said ladder leg sleeve means, sliding underneath and around the bottom rungs of said ladder; wherein said ladder leg sleeve means provides resistance to said ladder leaning to the left or the right when said ladder leg sleeve means is slid onto said ladder; and wherein said tapered cut on the bottom of said ladder leg sleeve means, is used to clear said foot on said ladder leg when said rung support cup means are slid underneath and around said bottom rungs of said ladder.
Claim 9
Dependent Claim
217 words
A combination comprising a ladder leveler and a ladder, said ladder leveler comprising the parts of: a. a ladder leg sleeve means, having rung support cup means and a tapered cut on the bottom of said sleeve, b. an extension piece means, and c. an extension piece sleeve means, attached to said ladder leg sleeve means in a back to back fashion; wherein said extension piece means slides in the extension piece sleeve mean and may be fixed to said extension piece sleeve means; said ladder comprising two parallel legs connected by and perpendicular to a plurality of parallel rungs, and said legs each having a foot; wherein, said ladder leg sleeve means is attached to a leg of said ladder needing to be extended, by said rung support cup means of said ladder leg sleeve means, sliding underneath and around the bottom rungs of said ladder; wherein said ladder leg sleeve means provides resistance to said ladder leaning to the left or the right when said ladder leg sleeve means is slid onto said ladder; and wherein said tapered cut on the bottom of said ladder leg sleeve means, is used to clear said foot on said ladder leg when said rung support cup means are slid underneath and around said bottom rungs of said ladder.
Claim 10
Dependent Claim
16 words
The combination of claim 7, wherein said foot of said leg of said ladder is pivotable.
Claim 11
Dependent Claim
47 words
The combination of claim 8, wherein said tapered cut on the bottom of said ladder leg sleeve means allows said pivotable foot on said ladder leg sleeve means to be cocked backwards by said extension piece when said ladder leg sleeve means is attached onto said ladder.
Claim 12
Independent Claim
117 words
A method of leveling ladders comprising the steps of: a. attaching a ladder leg sleeve means onto a leg of a ladder needing to be extended, by sliding rung support cup means of said ladder leg sleeve means underneath and around the bottom rungs of said ladder, b. simultaneously clearing a foot on said leg of said ladder with a tapered cut on the bottom of said ladder leg sleeve means, c. attaching an extension piece sleeve means to said ladder leg sleeve means in a back to back fashion, and d. fixing an extension piece sleeve means, slidable in an extension piece sleeve means, onto said extension piece sleeve means, in order to level said ladder.
Claim 13
Independent Claim
117 words
A method of leveling ladders comprising the steps of: a. attaching a ladder leg sleeve means onto a leg of a ladder needing to be extended, by sliding rung support cup means of said ladder leg sleeve means underneath and around the bottom rungs of said ladder, b. simultaneously clearing a foot on said leg of said ladder with a tapered cut on the bottom of said ladder leg sleeve means, c. attaching an extension piece sleeve means to said ladder leg sleeve means in a back to back fashion, and d. fixing an extension piece sleeve means, slidable in an extension piece sleeve means, onto said extension piece sleeve means, in order to level said ladder.
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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) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |