US3228089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a caster device
Assignee: Fairbanks Co
•
Filing: 1964-02-11
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Granted: 1966-01-11
•
Expires: 1984-02-11
Abstract
No abstract record available.
Inventors
- 👤 William E Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:06
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/02; B60B33/021; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49689; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF PRODUCING A CASTER DEVICE COMPRISING ASSEMBLING A HIGH CARBON STEEL MOUNTING MEMBER HAVING AN UPPER SECTION AND AN INTEGRALLY FORMED DEPENDING SHANK OF SMALLER TRANSVERSE CROSS-SECTION THAN SAID UPPER SECTION WITH A WHEEL BEARING AND SUPPORT ASSEMBLY HAVING AN OPENING ENGAGING SAID SHANK, HEATING SAID SHANK TO AT LEAST THE FORGING AND CASE HARDENING TEMPERATURES OF SAID STEEL BY PASSING AN ELECTRIC CURRENT THERETHROUGH, AND APPLYING AXIAL PRESSURE TO THE END FACE OF SAID HEATED SHANK TO DEFORM AND ENLARGE THE BOTTOM SECTION THEREOF INTO A HEAD WHICH RIDIGLY LOCKS SAID WHEEL BEARING AND SUPPORT ASSEMBLY TO SAID SHANK, WHEREBY THE MEMBER BECOMES CASE HARDENED THROUGHOUT THE AREA ADJACENT THE JUNCTION OF THE UPPER SECTION AND THE SHANK OF SMALLER CROSS-SECTION.
Claim 2
Independent Claim
124 words
THE METHOD OF PRODUCING A CASTER DEVICE COMPRISING ASSEMBLING A HIGH CARBON STEEL MOUNTING MEMBER HAVING AN UPPER SECTION AND AN INTEGRALLY FORMED DEPENDING SHANK OF SMALLER TRANSVERSE CROSS-SECTION THAN SAID UPPER SECTION WITH A WHEEL BEARING AND SUPPORT ASSEMBLY HAVING AN OPENING ENGAGING SAID SHANK, HEATING SAID SHANK TO AT LEAST THE FORGING AND CASE HARDENING TEMPERATURES OF SAID STEEL BY PASSING AN ELECTRIC CURRENT THERETHROUGH, AND APPLYING AXIAL PRESSURE TO THE END FACE OF SAID HEATED SHANK TO DEFORM AND ENLARGE THE BOTTOM SECTION THEREOF INTO A HEAD WHICH RIDIGLY LOCKS SAID WHEEL BEARING AND SUPPORT ASSEMBLY TO SAID SHANK, WHEREBY THE MEMBER BECOMES CASE HARDENED THROUGHOUT THE AREA ADJACENT THE JUNCTION OF THE UPPER SECTION AND THE SHANK OF SMALLER CROSS-SECTION.
References Cited (Backward Citations)
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US2624104A
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US2743509A
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |