US3954155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepladder dolly
Assignee: Individual
•
Filing: 1974-04-23
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Granted: 1976-05-04
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Expires: 1994-04-23
Abstract
Abstract A stepladder with a sturdy plate mounted on its top surface and a pair of wheels mounted near the top of the ladder is provided so that upon folding the legs together and inverting the ladder, it becomes a dolly which rides on said wheels and employs the plate as a carry plate. Additional wheels or casters are added to the other end of the ladder to convert same to a wheeled flat bed.
Inventors
- 👤 Orlando Guidara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:47
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; E06C1/39; E06C1/14; E06C1/16; E06C1/20; E06C1/397
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
An invertable stepladder dolly comprising a stepladder having a pair of legs, cross members connecting said legs, at least some of which define steps, a support member pivotably connected thereto to support said legs in an inclined position, the uppermost cross member extending forward of said ladder in a durable carry plate; a first roller means mounted to the top portion of said stepladder and extending behind said carry plate and said legs, a second roller means mounted to the bottom portion of said stepladder and extending behind said legs such that said stepladder on being inverted becomes a dolly with said plate defining the forward projecting carry plate thereof, and extending past the plane of said support member which dolly rides at least on said first roller means.
Claim 2
Dependent Claim
129 words
An invertable stepladder dolly comprising a stepladder having a pair of legs, cross members connecting said legs, at least some of which define steps, a support member pivotably connected thereto to support said legs in an inclined position, the uppermost cross member extending forward of said ladder in a durable carry plate; a first roller means mounted to the top portion of said stepladder and extending behind said carry plate and said legs, a second roller means mounted to the bottom portion of said stepladder and extending behind said legs such that said stepladder on being inverted becomes a dolly with said plate defining the forward projecting carry plate thereof, and extending past the plane of said support member which dolly rides at least on said first roller means.
Claim 3
Dependent Claim
62 words
The stepladder dolly of claim 1 wherein the first roller means is a pair of wheels connected by an axle and mounted on the rear side of said legs at the upper portion of said stepladder and said second roller means is a pair of spaced wheels mounted on the rear side of said legs at the lower portion of said stepladder.
Claim 4
Dependent Claim
30 words
The stepladder dolly of claim 1 wherein said support member is a pair of support legs which fold against the ladder legs to define a carry surface for said dolly.
Claim 5
Dependent Claim
20 words
The stepladder dolly of claim 3 wherein said support legs have mounted therebetween a support plate in longitudinal alignment therewith.
Claim 6
Dependent Claim
57 words
The stepladder dolly of claim 1 wherein said second roller means is a pair of spaced casters mounted on legs extending from the rear side of said legs, which legs become dolly handles when said step ladder is inverted and become caster legs when said dolly is lowered to ride on all wheels as a flat bed.
Claim 7
Dependent Claim
26 words
The stepladder dolly of claim 1 wherein said first roller means is a plurality of wheels and said second roller means is at least one wheel.
Claim 8
Dependent Claim
16 words
The stepladder dolly of claim 6 wherein all of said wheels are mounted on extension arms.
Claim 9
Dependent Claim
34 words
The stepladder dolly of claim 5 wherein the caster legs extend past the forward side of said ladder legs to grip said support member therebetween when the same is folded against said ladder legs.
Claim 10
Dependent Claim
108 words
An invertable stepladder dolly comprising a stepladder having a pair of legs, cross members connecting said legs, at least some of which define steps, a support member pivotably connected thereto to support said legs in an inclined position, the uppermost cross member extending forward of said ladder in a durable carry plate, a roller means mounted to the top portion of said stepladder and extending behind said carry plate and said legs such that said stepladder, on being inverted, becomes a dolly with said plate defining the forward projecting carry plate thereof and extending past the plane of said support member, which dolly rides on said roller means.
Claim 11
Dependent Claim
108 words
An invertable stepladder dolly comprising a stepladder having a pair of legs, cross members connecting said legs, at least some of which define steps, a support member pivotably connected thereto to support said legs in an inclined position, the uppermost cross member extending forward of said ladder in a durable carry plate, a roller means mounted to the top portion of said stepladder and extending behind said carry plate and said legs such that said stepladder, on being inverted, becomes a dolly with said plate defining the forward projecting carry plate thereof and extending past the plane of said support member, which dolly rides on said roller means.
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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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |