Patent US3224530A successfully refreshed from Google Patents.
US3224530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step stool
Assignee: Samsonite Corp
•
Filing: 1963-04-10
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Granted: 1965-12-21
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Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 King Marvin
- 👤 William M Schmidt
- 👤 Stanley E Thorwaldsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:12
CPC Classifications
A; A47; A47C; A47C12/00; A47C12/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A STEP STOOL COMPRISING A PAIR OF FRONT LEGS; A PAIR OF REAR LEGS PIVOTED TO SAID FRONT LEGS ABOVE THE CENTER OF HEIGHT THEREOF SO THAT, WITH SAID LEGS IN OPEN POSITION, THE UPPER PORTION OF SAID REAR LEGS WILL BE DISPOSED ABOVE SAID FRONT LEGS AND THE UPPER PORTION OF SAID FRONT LEGS WILL BE DISPOSED ABOVE SAID REAR LEGS; A SEAT PIVOTALLY ATTACHED AT ITS FRONT TO THE UPPER PORTION OF SAID REAR LEGS AND MOVABLY CONNECTED TO THE UPPER PORTION OF SAID FRONT LEGS; A STEP FRAME HAVING A PAIR OF SPACED, REARWARDLY EXTENDING BARS, SAID STEP FRAME BEING PIVOTALLY CONNECTED TO SAID FRONT LEGS BELOW THE PIVOTAL CONNECTION OF SAID FRONT AND REAR LEGS; A STEP MOUNTED ON THE FRONT OF SAID STEP FRAME; A CROSS ROD EXTENDING BETWEEN SAID REAR LEGS INTERMEDIATE THE ENDS THEREOF; LINKS PIVOTALLY CONNECTING A BAR OF SAID STEP FRAME TO SAID REAR CROSS ROD, SAID BARS OF SAID STEP FRAME BEING ADAPTED TO ENGAGE THE UNDERSIDE OF SAID REAR CROSS ROD TO MAINTAIN SAID STEP IN NORMAL POSITION; AND AN ANGLE ATTACHED TO THE UNDERSIDE OF SAID STEP AND HAVING AN EAR DEPENDING FROM EACH END THEREOF, EACH SAID EAR BEING CONNECTED TO A PIVOTAL CONNECTION BETWEEN A FRONT LEG AND SAID STEP FRAME.
Claim 2
Dependent Claim
215 words
A STEP STOOL COMPRISING A PAIR OF FRONT LEGS; A PAIR OF REAR LEGS PIVOTED TO SAID FRONT LEGS ABOVE THE CENTER OF HEIGHT THEREOF SO THAT, WITH SAID LEGS IN OPEN POSITION, THE UPPER PORTION OF SAID REAR LEGS WILL BE DISPOSED ABOVE SAID FRONT LEGS AND THE UPPER PORTION OF SAID FRONT LEGS WILL BE DISPOSED ABOVE SAID REAR LEGS; A SEAT PIVOTALLY ATTACHED AT ITS FRONT TO THE UPPER PORTION OF SAID REAR LEGS AND MOVABLY CONNECTED TO THE UPPER PORTION OF SAID FRONT LEGS; A STEP FRAME HAVING A PAIR OF SPACED, REARWARDLY EXTENDING BARS, SAID STEP FRAME BEING PIVOTALLY CONNECTED TO SAID FRONT LEGS BELOW THE PIVOTAL CONNECTION OF SAID FRONT AND REAR LEGS; A STEP MOUNTED ON THE FRONT OF SAID STEP FRAME; A CROSS ROD EXTENDING BETWEEN SAID REAR LEGS INTERMEDIATE THE ENDS THEREOF; LINKS PIVOTALLY CONNECTING A BAR OF SAID STEP FRAME TO SAID REAR CROSS ROD, SAID BARS OF SAID STEP FRAME BEING ADAPTED TO ENGAGE THE UNDERSIDE OF SAID REAR CROSS ROD TO MAINTAIN SAID STEP IN NORMAL POSITION; AND AN ANGLE ATTACHED TO THE UNDERSIDE OF SAID STEP AND HAVING AN EAR DEPENDING FROM EACH END THEREOF, EACH SAID EAR BEING CONNECTED TO A PIVOTAL CONNECTION BETWEEN A FRONT LEG AND SAID STEP FRAME.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |