US3222032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable lift device
Assignee: Den Tal Ez Chair Manufacturing Co
•
Filing: 1963-12-23
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Granted: 1965-12-07
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Berthold W Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
B; B66; B66F; B66F5/00; B66F5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A LIFT APPARATUS COMPRISING: (A) BASE MEANS, (B) A FIRST LIFT ARM PIVOTALLY CONNECTED AT ONE END TO THE BASE MEANS, (C) A SECOND LIFT ARM PIVOTALLY CONNECTED AT ONE END TO THE OTHER END OF THE FIRST LIFT ARM, (D) FLUID CYLINDER MEANS PIVOTALLY CONNECTED AN ONE END TO THE BASE AND AT THE OTHER END TO SAID SECOND ARM MEANS, AND (E) CAM AND CAM FOLLOWER MEANS INTERCONNECTING SAID FIRST ARM MEANS AND SAID FLUID CYLINDER MEANS.
Claim 2
Dependent Claim
79 words
A LIFT APPARATUS COMPRISING: (A) BASE MEANS, (B) A FIRST LIFT ARM PIVOTALLY CONNECTED AT ONE END TO THE BASE MEANS, (C) A SECOND LIFT ARM PIVOTALLY CONNECTED AT ONE END TO THE OTHER END OF THE FIRST LIFT ARM, (D) FLUID CYLINDER MEANS PIVOTALLY CONNECTED AN ONE END TO THE BASE AND AT THE OTHER END TO SAID SECOND ARM MEANS, AND (E) CAM AND CAM FOLLOWER MEANS INTERCONNECTING SAID FIRST ARM MEANS AND SAID FLUID CYLINDER MEANS.
References Cited (Backward Citations)
US2373848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |