Patent US3743227A successfully refreshed from Google Patents.
US3743227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder supported hoist
Assignee: Individual
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Filing: 1971-08-16
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Granted: 1973-07-03
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Expires: 1991-08-16
Abstract
Abstract An elongated ladder engaging standard is connected in angular relation to one end to one end of an arm and a brace interconnected with the other end portions of the standard and arm, forms an A-frame hoist. Socket means on the standard releasably engage ladder rungs in hoist supporting relation. Tackle means on the outwardly projecting end of the arm completes the hoist.
Inventors
- 👤 J Sowery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:20
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A hoist in combination with a ladder having side rails joined in spaced-apart relation by a plurality of spaced-apart rungs, the improvement comprising: an elongated standard, right angular in cross section, extending along and contiguously contacting adjacent cooperating surfaces of one said side rail intermediate its ends and spanning the spacing between at least five of said rungs; a rod member connected medially its ends with one end of said standard, said rod member having its end portions doubled back upon themselves in angular relation for partially surrounding an intermediate portion of one said ladder side rail for releasably connecting said standard with said ladder; a plurality of pairs of rung engaging inverted U-shaped members connected, respectively, in longitudinally spaced relation, with said standard; an elongated arm connected, at one end portion, with one end portion of said standard; a brace extending between and connected at its respective ends with the other end portions of said standard and said arm, respectively; and, a block connected with the end portion of said arm opposite said standard.
Claim 2
Dependent Claim
175 words
A hoist in combination with a ladder having side rails joined in spaced-apart relation by a plurality of spaced-apart rungs, the improvement comprising: an elongated standard, right angular in cross section, extending along and contiguously contacting adjacent cooperating surfaces of one said side rail intermediate its ends and spanning the spacing between at least five of said rungs; a rod member connected medially its ends with one end of said standard, said rod member having its end portions doubled back upon themselves in angular relation for partially surrounding an intermediate portion of one said ladder side rail for releasably connecting said standard with said ladder; a plurality of pairs of rung engaging inverted U-shaped members connected, respectively, in longitudinally spaced relation, with said standard; an elongated arm connected, at one end portion, with one end portion of said standard; a brace extending between and connected at its respective ends with the other end portions of said standard and said arm, respectively; and, a block connected with the end portion of said arm opposite said standard.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |