US3618703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outrigger supports for ladders
Assignee: Individual
•
Filing: 1970-08-19
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Granted: 1971-11-09
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Expires: 1990-08-19
Abstract
Abstract A stabilizing safety attachment for ladders and having an elongate base channel extending across and beyond lower end of the legs of the legs of the ladder. The web material of the base channel is bent upwardly to provide lower attachment flanges for pivotal brace members extending upwardly and inwardly therefrom to attachment at the legs of the ladder by a threaded stud extending through a rung of the ladder. The device also has a pair of upturned retainer tabs formed from the web of the base channel for preventing lateral movement of the legs of the ladder in the base channel.
Inventors
- 👤 Reuben Wilke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:30
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/423
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
In combination with a ladder having a pair of pivotal foot plates on the legs thereof, an outrigger support comprising: a. an elongate base channel having a pair of edge flanges connected by a web, said base channel receiving the foot plates of said ladder and extending across and outwardly beyond the legs of the ladder, b. a pair of attaching flanges formed from said web at each end of said base channel, c. a pair of outrigger braces, each of said braces being pivotally attached at its lower end between the attaching flanges comprising one of said pairs for pivotal movement about an axis lying along the length of said base channel, said braces extending inwardly and upwardly from their lower ends, d. means for securing the upper ends of said outrigger braces to the legs of said ladder above said base channel, and e. a pair of laterally spaced upturned tabs formed from the web of said base channel for retaining the legs of the ladder against lateral movement in said base channel.
Claim 2
Dependent Claim
175 words
In combination with a ladder having a pair of pivotal foot plates on the legs thereof, an outrigger support comprising: a. an elongate base channel having a pair of edge flanges connected by a web, said base channel receiving the foot plates of said ladder and extending across and outwardly beyond the legs of the ladder, b. a pair of attaching flanges formed from said web at each end of said base channel, c. a pair of outrigger braces, each of said braces being pivotally attached at its lower end between the attaching flanges comprising one of said pairs for pivotal movement about an axis lying along the length of said base channel, said braces extending inwardly and upwardly from their lower ends, d. means for securing the upper ends of said outrigger braces to the legs of said ladder above said base channel, and e. a pair of laterally spaced upturned tabs formed from the web of said base channel for retaining the legs of the ladder against lateral movement in said base channel.
Claim 3
Dependent Claim
49 words
The outrigger support for ladders as specified in claim 1 wherein said means for securing the upper end of said outrigger braces to the legs of the ladder comprise an elongate threaded stud extending from one leg of the ladder to the other through a rung of the ladder.
Claim 4
Dependent Claim
26 words
The outrigger support for ladders as specified in claim 1 having a high-friction surface pad secured to the underside of the web of said base channel.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |