Patent US3250478A successfully refreshed from Google Patents.
US3250478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear ring and locking nut structure for gyratory crushers
Assignee: Nordberg Manufacturing Co
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Filing: 1963-11-22
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Granted: 1966-05-10
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Expires: 1983-11-22
Abstract
No abstract record available.
Inventors
- 👤 Lawrence B Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:53
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A GYRATORY CRUHSER HAVING A CRUSHING CAVITY DEFINED BY A BOWL LINER AND MANTLE, AND FOR USE BETWEEN THE MANTLE AND LOCKING NUT OF SUCH A GYRATORY CRUSHER, THE MANTLE HAVING AN UPWARDLY AND OUTWARDLY EXTENDING GENERALLY CONIC TOP THRUST RECEIVING SURFACE THE LOCKING NUT HAVING AN UPWARDLY AND DOWNWARDLY EXTENDING AND DOWNWARDLY FACING GENERALLY CONIC THRUST DELIVERING SURFACE, A MASSIVE WEAR RECEIVING RING OPPOSED TO THE BOWL LINER ADAPTED TO BE POSITIONED THEREBETWEEN, SAID RING HAVING A LOWER CONIC SURFACE CONFORMING TO THE UPPER SURFACE OF THE MANTLE AND AN UPPER CONIC SURFACE CONFORMING TO THE THRUST SURFACE OF THE LOCKING NUT, SAID RING SPACED A LOWER PORTION SURROUNDING AND ADJACENT BUT SPACED OUTWARDLY FROM OPPOSED LOWER PORTION OF THE LOCKING NUT.
Claim 2
Dependent Claim
124 words
IN A GYRATORY CRUHSER HAVING A CRUSHING CAVITY DEFINED BY A BOWL LINER AND MANTLE, AND FOR USE BETWEEN THE MANTLE AND LOCKING NUT OF SUCH A GYRATORY CRUSHER, THE MANTLE HAVING AN UPWARDLY AND OUTWARDLY EXTENDING GENERALLY CONIC TOP THRUST RECEIVING SURFACE THE LOCKING NUT HAVING AN UPWARDLY AND DOWNWARDLY EXTENDING AND DOWNWARDLY FACING GENERALLY CONIC THRUST DELIVERING SURFACE, A MASSIVE WEAR RECEIVING RING OPPOSED TO THE BOWL LINER ADAPTED TO BE POSITIONED THEREBETWEEN, SAID RING HAVING A LOWER CONIC SURFACE CONFORMING TO THE UPPER SURFACE OF THE MANTLE AND AN UPPER CONIC SURFACE CONFORMING TO THE THRUST SURFACE OF THE LOCKING NUT, SAID RING SPACED A LOWER PORTION SURROUNDING AND ADJACENT BUT SPACED OUTWARDLY FROM OPPOSED LOWER PORTION OF THE LOCKING NUT.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |