Patent US3430972A successfully refreshed from Google Patents.
US3430972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined stepladder-cart
Assignee: Individual
•
Filing: 1966-08-11
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Granted: 1969-03-04
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Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 Armin Fiedler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:48
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A COMBINED STEPLADDER-CART COMPRISING: A STEPLADDER HAVING A PLURALITY OF STEPS AFFIXED TO A PAIR OF STEP SUPPORTS AND A PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS OF SAID PAIR OF STEP SUPPORTS, A PAIR OF SUPPORT LEGS HAVING A PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS THEREOF AND A PLURALITY OF STEPS AFFIXED BETWEEN THEM IN SPACED RELATION, HINGE MEANS AFFIXED TO SAID PLATFORM-STEPS HINGEDLY FIXING SAID STEPLADDER AND SAID SUPPORT LEGS TOGETHER AND IN A FASHION SUCH THAT SAID SUPPORT LEGS CAN BE PIVOTED TO EXTEND THE LENGTH OF SAID STEPLADDER, SAID PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS OF SAID SUPPORT LEGS HAVING A CONTINUOUS SLOPED SURFACE WHICH ENGAGES THE UPPER SURFACE OF SAID PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS OF SAID STEP SUPPORTS FOR PROVIDING ADDITIONAL STRENGTH AND FOR RETAINING SAID STEPLADDER AND SAID SUP-
Claim 2
Dependent Claim
136 words
A COMBINED STEPLADDER-CART COMPRISING: A STEPLADDER HAVING A PLURALITY OF STEPS AFFIXED TO A PAIR OF STEP SUPPORTS AND A PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS OF SAID PAIR OF STEP SUPPORTS, A PAIR OF SUPPORT LEGS HAVING A PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS THEREOF AND A PLURALITY OF STEPS AFFIXED BETWEEN THEM IN SPACED RELATION, HINGE MEANS AFFIXED TO SAID PLATFORM-STEPS HINGEDLY FIXING SAID STEPLADDER AND SAID SUPPORT LEGS TOGETHER AND IN A FASHION SUCH THAT SAID SUPPORT LEGS CAN BE PIVOTED TO EXTEND THE LENGTH OF SAID STEPLADDER, SAID PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS OF SAID SUPPORT LEGS HAVING A CONTINUOUS SLOPED SURFACE WHICH ENGAGES THE UPPER SURFACE OF SAID PLATFORM-STEP AFFIXED ACROSS THE UPPER ENDS OF SAID STEP SUPPORTS FOR PROVIDING ADDITIONAL STRENGTH AND FOR RETAINING SAID STEPLADDER AND SAID SUP-
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |