US3712418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Climbing assembly having removable steps
Assignee: AB Chance Co
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Filing: 1971-05-24
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Granted: 1973-01-23
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Expires: 1991-05-24
Abstract
Abstract A climbing assembly for transmission poles and the like includes a series of removable steps in the nature of open frames having downturned stems insertable into tubular brackets welded or otherwise rigidly affixed to the poles. The steps are provided with rungs of a size and disposition to permit their further use as working platforms or stages and are offset for safety purposes. The releasable attachment is such as to obviate lateral or other movement during use to preclude accident or injury.
Inventors
- 👤 W Currence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:26
CPC Classifications
E; E06; E06C; E06C9/00; E06C9/02; E06C9/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
200 words
In combination with an elongated upright having an outer wall, a climbing assembly for the upright capable of use as a work platform, comprising: a step configured to be mounted to said outer wall of the upright and including an open, continuous, polygonal frame presenting: a pair of sides, a lateral rung interconnecting said sides and being of a width at least twice the width of a man''s foot to present a work platform, downturned arms at the outer ends of said sides for connecting the sides with said rung to locate the latter in offset relationship below the level of the sides whereby said arms deter lateral skidding of a man''s foot off said rung, a crosspiece interconnecting said sides rearwardly of the rung, and a member depending from said crosspiece intermediate the ends of the latter; and a bracket secured to the upright and configured to releasably receive said member to place the latter and said crosspiece in engagement with said outer wall of the upright, said crosspiece being complementally configured to said outer wall whereby said engagement of the membEr and the crosspiece with the outer wall holds the step in rigid, stabilized relationship to said upright.
Claim 2
Dependent Claim
200 words
In combination with an elongated upright having an outer wall, a climbing assembly for the upright capable of use as a work platform, comprising: a step configured to be mounted to said outer wall of the upright and including an open, continuous, polygonal frame presenting: a pair of sides, a lateral rung interconnecting said sides and being of a width at least twice the width of a man''s foot to present a work platform, downturned arms at the outer ends of said sides for connecting the sides with said rung to locate the latter in offset relationship below the level of the sides whereby said arms deter lateral skidding of a man''s foot off said rung, a crosspiece interconnecting said sides rearwardly of the rung, and a member depending from said crosspiece intermediate the ends of the latter; and a bracket secured to the upright and configured to releasably receive said member to place the latter and said crosspiece in engagement with said outer wall of the upright, said crosspiece being complementally configured to said outer wall whereby said engagement of the membEr and the crosspiece with the outer wall holds the step in rigid, stabilized relationship to said upright.
Claim 3
Dependent Claim
27 words
An assembly as set forth in claim 1, wherein said sides of the step are parallel and extend transversely outwardly from said outer wall of the upright.
Claim 4
Dependent Claim
33 words
An assembly as set forth in claim 1, wherein said crosspiece includes a pair of sections each terminating in a downwardly extending leg, said legs being interconnected in side-by-side relationship presenting said member.
Claim 5
Dependent Claim
59 words
An assembly as set forth in claim 1, wherein said bracket comprises an open, transversely U-shaped tube presenting a bight and a pair of spaced, longitudinal flanges integral with the bight and fixed to said upright, said member being longer than said flanges and extending through said tube with said crosspiece resting on the upper end of the tube.
References Cited (Backward Citations)
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |