US3099103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball joint feet for ladders and the like
Assignee: Individual
•
Filing: 1961-10-31
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Granted: 1963-07-30
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Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Allen J Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:33
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/06; A47B91/066; E; E06; E06C; E06C7/00; E06C7/42; E06C7/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SUPPORTING SURFACE COMFORMABLE FOOT FORMED OF RESILIENT MATERIAL AND INCLUDING A BASE HAVING AN UPWARDLY PROJECTING HUB, AND A BALL HAVING A SHANK, MEANS FOR SECURING THE BALL IN THE FOOT COMPRISING A BALL SOCKET FORMED DOWNWARDLY IN SAID HUB AND TERMINATING AT THE UPPER END IN AN OPENING HAVING A LESSER DIAMETER THAN THAT OF THE BALL, REQUIRING FORCED INSERTION OF THE BALL INTO THE SOCKET AND THEREBY BEING REMOVABLE ONLY THROUGH FORCED RETRACTION, A SEAT AND REINFORCEMENT COMPRISING A SHEET OF METAL HAVING A CONCAVITY FORMED CENTRALLY THEREOF TO FORM THE LOWER END OF THE SOCKET, SAID SHEET HAVING A DIAMETER IN EXCESS OF THAT OF THE HUB AND SLIGHTLY LESS THAN THAT OF THE BASE, AND BEING MOLDED IN THE BASE FOR DECREASED RESILIENCY.
Claim 2
Dependent Claim
128 words
A SUPPORTING SURFACE COMFORMABLE FOOT FORMED OF RESILIENT MATERIAL AND INCLUDING A BASE HAVING AN UPWARDLY PROJECTING HUB, AND A BALL HAVING A SHANK, MEANS FOR SECURING THE BALL IN THE FOOT COMPRISING A BALL SOCKET FORMED DOWNWARDLY IN SAID HUB AND TERMINATING AT THE UPPER END IN AN OPENING HAVING A LESSER DIAMETER THAN THAT OF THE BALL, REQUIRING FORCED INSERTION OF THE BALL INTO THE SOCKET AND THEREBY BEING REMOVABLE ONLY THROUGH FORCED RETRACTION, A SEAT AND REINFORCEMENT COMPRISING A SHEET OF METAL HAVING A CONCAVITY FORMED CENTRALLY THEREOF TO FORM THE LOWER END OF THE SOCKET, SAID SHEET HAVING A DIAMETER IN EXCESS OF THAT OF THE HUB AND SLIGHTLY LESS THAN THAT OF THE BASE, AND BEING MOLDED IN THE BASE FOR DECREASED RESILIENCY.
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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |