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US3205827A Expired / Lapsed US ⏱️ 0.0 years remaining

Magnetically driven centrifugal pump assembly

Assignee: March Manufacturing Co
•
Filing: 1964-04-28
•
Granted: 1965-09-14
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Expires: 1984-04-28
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Abstract

No abstract record available.

Inventors

  • 👤 Frederick N Zimmermann

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 21:49
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/106; H02K5/00; H02K5/04; H02K5/12; H02K5/128

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 287 words
A PUMP ASSEMBLY OF THE CLASS DESCRIBED COMPRISING, A MOUNTING BRACKET HAVING A SUPPORTING BASE WITH A BRACKET HOUSING HORIZONTALLY ARRANGED AND SUPPORTED THEREON, A MOTOR MOUNTED ON ONE END OF SAID BRACKET HOUSING, A MOTOR DRIVE SHAFT EXTENDING HORIZONTALLY THROUGH AN OPENING IN THE END WALL OF SAID BRACKET ADJACENT SAID MOTOR, A CENTRIFUGAL PUMP CASING ASSEMBLED UPON THE OPPOSITE END OF SAI DBRACKET HOUSING, AN IMPELLER CHAMBER IN SAID CASING, A NON-MAGNETIC SHIELD OF CUP SHAPED CONFIGURATION HAVING A DRUM PORTION WITH A PERIPHERAL FLANGE, SAID FLANGE OF SAID SHIELD MOUNTED BETWEEN SAID BRACKET HOUSING AND SAID PUMP HOUSING, SAID SHIELD HAVING A VERTICAL CIRCULAR REAR WALL WITH A CENTRAL BORE THEREIN, AN IMPELLER SUPPORTING SHAFT MOUNTED WITHIN SAID BORE IN SAID SHIELD AND EFFECTING CLOSURE THEREOF, AND IMPELLER SUPPORTING SHAFT EXTENDING FORWARDLY FROM REAR WALL OF SAID SHIELD WITHIN SAID DRUM PORTION, AN IMPELLER ARRANGED IN SAID IMPELLER CHAMBER, SAID IMPELLER HAVING A REARWARDLY EXTENDING HUB EXTENDING WITHIN SAID DRUM OF SAID SHIELD AND ROTATABLY MOUNTED UPON THE FORWARD FREE END PORTION OF SAID IMPELLER SUPPORTING SHAFT ATTACHED TO SAID SHIELD, A HOLLOW CYLINDRICAL SHAPED DRIVING MAGNET SUPPOET OPEN AT ITS FORWARD END HAVING A VERTICAL REAR WALL, SAID MAGNET SUPPORT SECURED UPON THE FORWARD END PORTION OF SAID MOTOR DRIVE SHAFT EXTENDING WITHIN SAID BRACKET HOUSING, A RING TYPE DRIVING MAGNET VERTICALLY ARRANGED WITHIN SAID MAGNET SUPPORT ADJACENT THE OPEN END THEREOF AND SECURED TO THE INTERIOR CYLINDRICAL SURFACE THEREOF, A RING TYPE DRIVEN MAGNET VERTICALLY ARRANGED WITHIN SAID DRUM PORTION OF SAID SHIELD AND SECURED DIRECTLY UPON THE EXTERIOR SURFACE OF SAID HUB OF SAID IMPELLER AND ROTATABLE THEREWITH, AND SAID PUMP CASING HAVING AN INLET OPEN AND A DISCHARGE OPENING THEREIN.
Claim 2
Dependent Claim 287 words
A PUMP ASSEMBLY OF THE CLASS DESCRIBED COMPRISING, A MOUNTING BRACKET HAVING A SUPPORTING BASE WITH A BRACKET HOUSING HORIZONTALLY ARRANGED AND SUPPORTED THEREON, A MOTOR MOUNTED ON ONE END OF SAID BRACKET HOUSING, A MOTOR DRIVE SHAFT EXTENDING HORIZONTALLY THROUGH AN OPENING IN THE END WALL OF SAID BRACKET ADJACENT SAID MOTOR, A CENTRIFUGAL PUMP CASING ASSEMBLED UPON THE OPPOSITE END OF SAI DBRACKET HOUSING, AN IMPELLER CHAMBER IN SAID CASING, A NON-MAGNETIC SHIELD OF CUP SHAPED CONFIGURATION HAVING A DRUM PORTION WITH A PERIPHERAL FLANGE, SAID FLANGE OF SAID SHIELD MOUNTED BETWEEN SAID BRACKET HOUSING AND SAID PUMP HOUSING, SAID SHIELD HAVING A VERTICAL CIRCULAR REAR WALL WITH A CENTRAL BORE THEREIN, AN IMPELLER SUPPORTING SHAFT MOUNTED WITHIN SAID BORE IN SAID SHIELD AND EFFECTING CLOSURE THEREOF, AND IMPELLER SUPPORTING SHAFT EXTENDING FORWARDLY FROM REAR WALL OF SAID SHIELD WITHIN SAID DRUM PORTION, AN IMPELLER ARRANGED IN SAID IMPELLER CHAMBER, SAID IMPELLER HAVING A REARWARDLY EXTENDING HUB EXTENDING WITHIN SAID DRUM OF SAID SHIELD AND ROTATABLY MOUNTED UPON THE FORWARD FREE END PORTION OF SAID IMPELLER SUPPORTING SHAFT ATTACHED TO SAID SHIELD, A HOLLOW CYLINDRICAL SHAPED DRIVING MAGNET SUPPOET OPEN AT ITS FORWARD END HAVING A VERTICAL REAR WALL, SAID MAGNET SUPPORT SECURED UPON THE FORWARD END PORTION OF SAID MOTOR DRIVE SHAFT EXTENDING WITHIN SAID BRACKET HOUSING, A RING TYPE DRIVING MAGNET VERTICALLY ARRANGED WITHIN SAID MAGNET SUPPORT ADJACENT THE OPEN END THEREOF AND SECURED TO THE INTERIOR CYLINDRICAL SURFACE THEREOF, A RING TYPE DRIVEN MAGNET VERTICALLY ARRANGED WITHIN SAID DRUM PORTION OF SAID SHIELD AND SECURED DIRECTLY UPON THE EXTERIOR SURFACE OF SAID HUB OF SAID IMPELLER AND ROTATABLE THEREWITH, AND SAID PUMP CASING HAVING AN INLET OPEN AND A DISCHARGE OPENING THEREIN.

References Cited (Backward Citations)

US2970548A Cited
US3001479A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-09-13 1969-03-15 1969-09-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-09-13 1973-03-15 1973-09-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-09-13 1977-03-15 1977-09-14 $7700.00 Window Closed / Lapsed

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