Patent US3261510A successfully refreshed from Google Patents.
US3261510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dispensing abrasive compound upon the surface of a rotatable lap plate of a lapping machine
Assignee: Spitfire Tool and Machine Co Inc
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Filing: 1965-01-27
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Granted: 1966-07-19
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Expires: 1985-01-27
Abstract
No abstract record available.
Inventors
- 👤 Lawrence O Day
- 👤 Dobrick Joseph
- 👤 Kay Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:38
CPC Classifications
B; B24; B24B; B24B57/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
AN APPARATUS FOR DISPENSING AN ABRASIVE COMPOUND UPON A ROTATABLE LAP PLATE OF A LAPPING MACHINE COMPRISING (A) A SUPPLY TANK CONTAINING THE ABRASIVE COMPOUND TO DISPENSED, (B) A MOTOR CARRIED BY SAID TANK AND HAVING A SHAFT DEPENDING INTO SAID TANK, (C) IMPELLER MEANS CARRIED BY SHAFT AT THE INNER END THEREOF, (D) VALVE MEANS CARRIED BY SAID TANK AND INCLUDING OPPOSITE DIVERGING PASSAGES HAVING A COMMON OUTLET OPENING PROVIDING A VALGE SEAT, (E) A VALVE HEAD FOR SAID OPENING INCLUDING A SHAFT MOVEABLE TRANSVERSELY OF THE VALVE SEAT, (F) AN ELECTROMAGNETIC ELEMENT HAVING AN ARMATURE CONNECTED TO SAID VALVE SHAFT TO MOVE SAID VALVE HEAD INTO AND FROM CLOSING POSITION WITH RESPECT TO SAID OPENING, (G) A CONDUIT CONNECTED WITH SAID IMPELLER MEANS AND ONE OF SAID PASSAGES, (H) A SECOND CONDUIT CONNECTED WITH THE OTHER OF SAID PASSAGES AND SAID TANK TO ALLOW EXCESS ABRASIVE COMPOUND TO RETURN TO SAID TANK FROM SAID PASSAGES WHEN SAID VALVE HEAD IS IN OPEN POSITON WITH RESPECT TO SAID OPENING AND TO ALLOW FREE CIRCULATION OF THE ABRASIVE COMPOUND THROUGH SAID CONDUITS FROM AND INTO SAID TANK WHEN SAID VALVE HEAD IN CLOSED POSITION WITH RESPECT TO SAID OPENING.
Claim 2
Independent Claim
199 words
AN APPARATUS FOR DISPENSING AN ABRASIVE COMPOUND UPON A ROTATABLE LAP PLATE OF A LAPPING MACHINE COMPRISING (A) A SUPPLY TANK CONTAINING THE ABRASIVE COMPOUND TO DISPENSED, (B) A MOTOR CARRIED BY SAID TANK AND HAVING A SHAFT DEPENDING INTO SAID TANK, (C) IMPELLER MEANS CARRIED BY SHAFT AT THE INNER END THEREOF, (D) VALVE MEANS CARRIED BY SAID TANK AND INCLUDING OPPOSITE DIVERGING PASSAGES HAVING A COMMON OUTLET OPENING PROVIDING A VALGE SEAT, (E) A VALVE HEAD FOR SAID OPENING INCLUDING A SHAFT MOVEABLE TRANSVERSELY OF THE VALVE SEAT, (F) AN ELECTROMAGNETIC ELEMENT HAVING AN ARMATURE CONNECTED TO SAID VALVE SHAFT TO MOVE SAID VALVE HEAD INTO AND FROM CLOSING POSITION WITH RESPECT TO SAID OPENING, (G) A CONDUIT CONNECTED WITH SAID IMPELLER MEANS AND ONE OF SAID PASSAGES, (H) A SECOND CONDUIT CONNECTED WITH THE OTHER OF SAID PASSAGES AND SAID TANK TO ALLOW EXCESS ABRASIVE COMPOUND TO RETURN TO SAID TANK FROM SAID PASSAGES WHEN SAID VALVE HEAD IS IN OPEN POSITON WITH RESPECT TO SAID OPENING AND TO ALLOW FREE CIRCULATION OF THE ABRASIVE COMPOUND THROUGH SAID CONDUITS FROM AND INTO SAID TANK WHEN SAID VALVE HEAD IN CLOSED POSITION WITH RESPECT TO SAID OPENING.
References Cited (Backward Citations)
US2307019A
Cited
US2434771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |