US3330634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preload grinding of duplex ball bearings
Assignee: Norma-Hoffmann Bearing Co
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Filing: 1964-07-15
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Granted: 1967-07-11
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Expires: 1984-07-15
Abstract
No abstract record available.
Inventors
- 👤 Frank H Rae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:02
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/54; B; B24; B24B; B24B49/00; B24B7/00; B24B7/10; B24B7/16; F16C25/00; F16C25/06; F16C33/00; F16C33/30; F16C33/58; F16C33/64; F16C35/00; F16C35/04; F16C35/06; F16C2229/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
THE METHOD OF PRELOAD GRINDING OF A BALL BEARING HAVING INNER AND OUTER RINGS WITH A COMPLEMENT OF BALLS BETWEEN THE RINGS, FOR DUPLEX ASSEMBLY WHILE SAID BEARING IS IN AN ASSEMBLED CONDITION, WHICH METHOD COMPRISES: ESTABLISHING A REFERENCE MEASURING PLANE FOR A FIRST FACE OF A FIRST ONE OF SAID RINGS, POSITIONING SAID FIRST RING OF THE ASSEMBLED BEARING SO THAT SAID FIRST FACE COINCIDES WITH SAID REFERENCE PLANE WHEN A SECOND ONE OF SAID RINGS IS LOADED WITH A PREDETERMINED THRUST LOADING FORCE, SAID THRUST LOADING FORCE PRODUCING A MOVEMENT OF THE ADJACENT FACE OF THE SECOND RING RELATIVE TO THE PLANE OF THE FACE OF THE FIRST RING, ROTATING THE THRUST LOADED SECOND RING WHILE THE FIRST RING IS SUPPORTED IMMOVABLE, AND SIMULTANEOUSLY GRINDING AND MEASURING THE STOCK REMOVED FROM SAID ADJACENT FACE OF THE SECOND RING UNTIL THE REQUIRED INSTRUSION, PROTRUSION OR FLUSHNESS OF SAID ADJACENT FACE OF THE SECOND RING RELATIVE TO SAID FIRST FACE OF THE FIRST RING IS OBTAINED WHICH WILL GIVE THE BEARING A SPECIFIED PRELOAD WHEN THE FACES OF THE DUPLEX PAIR ARE MOUNTED FLUSH IN RELATION.
Claim 2
Independent Claim
186 words
THE METHOD OF PRELOAD GRINDING OF A BALL BEARING HAVING INNER AND OUTER RINGS WITH A COMPLEMENT OF BALLS BETWEEN THE RINGS, FOR DUPLEX ASSEMBLY WHILE SAID BEARING IS IN AN ASSEMBLED CONDITION, WHICH METHOD COMPRISES: ESTABLISHING A REFERENCE MEASURING PLANE FOR A FIRST FACE OF A FIRST ONE OF SAID RINGS, POSITIONING SAID FIRST RING OF THE ASSEMBLED BEARING SO THAT SAID FIRST FACE COINCIDES WITH SAID REFERENCE PLANE WHEN A SECOND ONE OF SAID RINGS IS LOADED WITH A PREDETERMINED THRUST LOADING FORCE, SAID THRUST LOADING FORCE PRODUCING A MOVEMENT OF THE ADJACENT FACE OF THE SECOND RING RELATIVE TO THE PLANE OF THE FACE OF THE FIRST RING, ROTATING THE THRUST LOADED SECOND RING WHILE THE FIRST RING IS SUPPORTED IMMOVABLE, AND SIMULTANEOUSLY GRINDING AND MEASURING THE STOCK REMOVED FROM SAID ADJACENT FACE OF THE SECOND RING UNTIL THE REQUIRED INSTRUSION, PROTRUSION OR FLUSHNESS OF SAID ADJACENT FACE OF THE SECOND RING RELATIVE TO SAID FIRST FACE OF THE FIRST RING IS OBTAINED WHICH WILL GIVE THE BEARING A SPECIFIED PRELOAD WHEN THE FACES OF THE DUPLEX PAIR ARE MOUNTED FLUSH IN RELATION.
References Cited (Backward Citations)
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Cited
US1997903A
Cited
US2034507A
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US2907143A
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US2972841A
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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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |