US3086753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined shelter and pneumatic jack
Assignee: Individual
•
Filing: 1960-10-24
•
Granted: 1963-04-23
•
Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Walton W Cushman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:52
CPC Classifications
F; F41; F41H; F41H3/00; F41H3/02; B; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/35; E; E04; E04H; E04H15/00; E04H15/20; F15; F15B; F15B15/00; F15B15/08; F15B15/10; E04H2015/202; E04H2015/204; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A FRUSTO-CONICAL PNEUMATIC JACK ADAPTED TO BE PLACED OVER AN ARTICLE TO BE LIFTED, COMPRISING A SERIES OF ANNULAR INFLATABLE TUBES SUPERPOSED ONE UPON THE OTHER, THE ANNULI OF THE TUBES GRADUALLY DECREASING IN DIAMETER FROM THE BOTTOM TO THE TOP, MEANS FOR INDIVIDUALLY INFLATING SAID TUBES, MEANS OVERLYING THE TOPMOST OF SAID ANNULAR TUBES, AND A BLOCK-AND-TACKLE ASSEMBLY DEPENDING FROM SAID LAST-NAMED MEANS.
Claim 2
Dependent Claim
64 words
A FRUSTO-CONICAL PNEUMATIC JACK ADAPTED TO BE PLACED OVER AN ARTICLE TO BE LIFTED, COMPRISING A SERIES OF ANNULAR INFLATABLE TUBES SUPERPOSED ONE UPON THE OTHER, THE ANNULI OF THE TUBES GRADUALLY DECREASING IN DIAMETER FROM THE BOTTOM TO THE TOP, MEANS FOR INDIVIDUALLY INFLATING SAID TUBES, MEANS OVERLYING THE TOPMOST OF SAID ANNULAR TUBES, AND A BLOCK-AND-TACKLE ASSEMBLY DEPENDING FROM SAID LAST-NAMED MEANS.
References Cited (Backward Citations)
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US2990837A
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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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |