US3356874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosed rotor drive device
Assignee: Royal Industries Co Ltd
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Filing: 1964-03-23
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Granted: 1967-12-05
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Chiapparelli William
- 👤 Jungles Robert Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G21C7/14; H; H02; H02K; H02K49/00; H02K49/06; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18664; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
351 words
A DRIVE APPARATUS, COMPRISING: (A) A CASING INCLUDING A CYLINDRICAL TUBE; (B) A FIRST CYLINDRICAL ROTOR SECTION BEING ROTATABLY MOUNTED INSIDE SAID CYLINDRICAL TUBE AND HAVING A PLURALITY OF SALIENT POLES ADJACENT SAID CYLINDRICAL TUBE; (C) A SECOND CYLINDRICAL ROTOR SECTION BEING ROTATABLY MOUNTED INSIDE SAID CYLINDRICAL TUBE, HAVING A PLURALITY OF SALIENT POLES ADJACENT SAID CYLINDRICAL TUBE AND BEING MOUNTED FOR AXIAL MOVEMENT WITH RESPECT TO THE FIRST ROTOR SECTION; (D) A HOLLOW-CYLINDRICAL ARMATURE ROTATABLY MOUNTED OUTSIDE SAID CYLINDRICAL TUBE AND EXTENDING AROUND SAID CYLINDRICAL TUBE, SAID ARMATURE HAVING A PLURALITY OF SALIENT POLES CORRESPONDING TO THE SALIENT POLES OF THE FIRST AND SECOND ROTOR SECTIONS AND BEING LOCATED ADJACENT SAID CYLINDRICAL TUBE; (E) MEANS FOR AXIALLY BIASING THE SECOND ROTOR SECTION TO A FIRST POSITION; (F) MEANS FOR ROTATING THE ARMATURE ABOUT SAID CYLINDRICAL TUBE; (G) A SELECTIVELY ENERGIZABLE ELECTROMAGNETIC COIL AT THE ARMATURE FOR ESTABLISHING A MAGNETIC FIELD THROUGH THE ARMATURE, SAID CYLINDRICAL TUBE AND THE FIRST AND SECOND ROTOR SECTIONS, TO CAUSE THE FIRST AND SECOND ROTOR SECTIONS TO ROTATE WITH THE ARMATURE AND TO MOVE THE SECOND ROTOR SECTION AXIALLY RELATIVE TO THE FIRST ROTOR SECTION TO A SECOND POSITION; (H) A ROD INSIDE THE CYLINDRICAL CASING, SAID ROD HAVING A HELICAL THREAD AND BEING SECURED AGAINST ROTARY MOVEMENT; (I) A ROTATABLE NUT STRUCTURE LOCATED INSIDE SAID CYLINDRICAL TUBE AND DRIVEN BY SAID FIRST AND SECOND ROTOR SECTIONS, SAID NUT STRUCTURE BEING COMPOSED OF A PLURALITY OF NUT SECTIONS DEFINING THREADS CORRESPONDING TO THE HELICAL THREAD OF SAID ROD, AND SAID NUT SECTIONS BEING MOVABLE INTO ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD TO IMPART AXIAL MOVEMENT ON SAID ROD, AND MOVABLE OUT OF ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD TO RELEASE SAID ROD; AND (J) MEANS FOR MOVING SAID NUT SECTIONS OUT OF ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD IN RESPONSE TO MOVEMENT OF THE SECOND ROTOR SECTION TO SAID FIRST POSITION, AND FOR MOVING SAID NUT SECTIONS INTO ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD IN RESPONSE TO MOVEMENT OF THE SECOND ROTOR SECTION TO SAID SECOND POSITION.
Claim 2
Dependent Claim
351 words
A DRIVE APPARATUS, COMPRISING: (A) A CASING INCLUDING A CYLINDRICAL TUBE; (B) A FIRST CYLINDRICAL ROTOR SECTION BEING ROTATABLY MOUNTED INSIDE SAID CYLINDRICAL TUBE AND HAVING A PLURALITY OF SALIENT POLES ADJACENT SAID CYLINDRICAL TUBE; (C) A SECOND CYLINDRICAL ROTOR SECTION BEING ROTATABLY MOUNTED INSIDE SAID CYLINDRICAL TUBE, HAVING A PLURALITY OF SALIENT POLES ADJACENT SAID CYLINDRICAL TUBE AND BEING MOUNTED FOR AXIAL MOVEMENT WITH RESPECT TO THE FIRST ROTOR SECTION; (D) A HOLLOW-CYLINDRICAL ARMATURE ROTATABLY MOUNTED OUTSIDE SAID CYLINDRICAL TUBE AND EXTENDING AROUND SAID CYLINDRICAL TUBE, SAID ARMATURE HAVING A PLURALITY OF SALIENT POLES CORRESPONDING TO THE SALIENT POLES OF THE FIRST AND SECOND ROTOR SECTIONS AND BEING LOCATED ADJACENT SAID CYLINDRICAL TUBE; (E) MEANS FOR AXIALLY BIASING THE SECOND ROTOR SECTION TO A FIRST POSITION; (F) MEANS FOR ROTATING THE ARMATURE ABOUT SAID CYLINDRICAL TUBE; (G) A SELECTIVELY ENERGIZABLE ELECTROMAGNETIC COIL AT THE ARMATURE FOR ESTABLISHING A MAGNETIC FIELD THROUGH THE ARMATURE, SAID CYLINDRICAL TUBE AND THE FIRST AND SECOND ROTOR SECTIONS, TO CAUSE THE FIRST AND SECOND ROTOR SECTIONS TO ROTATE WITH THE ARMATURE AND TO MOVE THE SECOND ROTOR SECTION AXIALLY RELATIVE TO THE FIRST ROTOR SECTION TO A SECOND POSITION; (H) A ROD INSIDE THE CYLINDRICAL CASING, SAID ROD HAVING A HELICAL THREAD AND BEING SECURED AGAINST ROTARY MOVEMENT; (I) A ROTATABLE NUT STRUCTURE LOCATED INSIDE SAID CYLINDRICAL TUBE AND DRIVEN BY SAID FIRST AND SECOND ROTOR SECTIONS, SAID NUT STRUCTURE BEING COMPOSED OF A PLURALITY OF NUT SECTIONS DEFINING THREADS CORRESPONDING TO THE HELICAL THREAD OF SAID ROD, AND SAID NUT SECTIONS BEING MOVABLE INTO ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD TO IMPART AXIAL MOVEMENT ON SAID ROD, AND MOVABLE OUT OF ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD TO RELEASE SAID ROD; AND (J) MEANS FOR MOVING SAID NUT SECTIONS OUT OF ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD IN RESPONSE TO MOVEMENT OF THE SECOND ROTOR SECTION TO SAID FIRST POSITION, AND FOR MOVING SAID NUT SECTIONS INTO ENGAGEMENT WITH THE HELICAL THREAD ON SAID ROD IN RESPONSE TO MOVEMENT OF THE SECOND ROTOR SECTION TO SAID SECOND POSITION.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |