Patent US3241304A successfully refreshed from Google Patents.
US3241304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic bearings and false twisters
Assignee: Klinger Manufacturing Co Ltd
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Filing: 1963-08-13
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Granted: 1966-03-22
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Expires: 1983-08-13
Abstract
No abstract record available.
Inventors
- 👤 Mattingly Denis Albert Edward
- 👤 Gilchrist Reginald Selby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/165; D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/06; F; F16; F16C; F16C32/00; F16C32/06; H02K17/00; H02K17/02; H02K17/16; H02K7/00; H02K7/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
A BEARING COMPRISING TWO RELATIVELY ROTATABLE PARTS HAVING OPPOSED SUBSTANTIALLY CONGRUENT SURFACES TRANSVERSE THE AXIS OF ROTATION OF SAID RELATIVELY ROTATABLE PARTS, SAID OPPOSED SURFACES OF SAID PARTS BEING SUBSTANTIALLY FLAT AND AT RIGHT ANGLES TO THE AXIS OF ROTATION, MEANS FOR INTRODUCING A STREAM OF AIR BETWEEN SAID SURFACES SO AS TO MAINTAIN THEM IS SPACED RELATIONSHIP, AND MAGNETIC MEANS FOR LIMITING AXIAL AND RADIAL RELATIVE MOVEMENT BEATWEEN SAID PARTS, AND ONE OF SAID PARTS BEING STATIONARY AND BEING PROVIDED WITH AN AIR CHAMBER FEEDING A NUMBER OF PORTS EVENLY-SPACED AROUND THE AXIS OF ROTATION.
Claim 2
Dependent Claim
96 words
A BEARING COMPRISING TWO RELATIVELY ROTATABLE PARTS HAVING OPPOSED SUBSTANTIALLY CONGRUENT SURFACES TRANSVERSE THE AXIS OF ROTATION OF SAID RELATIVELY ROTATABLE PARTS, SAID OPPOSED SURFACES OF SAID PARTS BEING SUBSTANTIALLY FLAT AND AT RIGHT ANGLES TO THE AXIS OF ROTATION, MEANS FOR INTRODUCING A STREAM OF AIR BETWEEN SAID SURFACES SO AS TO MAINTAIN THEM IS SPACED RELATIONSHIP, AND MAGNETIC MEANS FOR LIMITING AXIAL AND RADIAL RELATIVE MOVEMENT BEATWEEN SAID PARTS, AND ONE OF SAID PARTS BEING STATIONARY AND BEING PROVIDED WITH AN AIR CHAMBER FEEDING A NUMBER OF PORTS EVENLY-SPACED AROUND THE AXIS OF ROTATION.
Claim 3
Independent Claim
141 words
AN APPARATUS FOR FALSE TWISTING AND CRIMPING A YARN COMPRISING A TENSIONING DEVICE, A TWIST STOPPING DEVICE, A HEATER THROUGH WHICH THE YARN IS DRAWN, AN ELECTRIC MOTOR HAVING A STATOR SHAPED TO PROVIDE A NUMBER OF HOLES TERMINATING IN A FLAT END FACE, THE STATOR BEING PROVIDED WITH WINDINGS FOR CONNECTION WITH A SOURCE OF ALTERNATING ELECTRIC CURRENT SUPPLY SO AS TO PRODUCE A ROTATING MAGNETIC FIELD, THE MOTOR HAVING A ROTOR COMPRISING A FLAT FACED HYSTERESIS MEMBER DISPOSED OPPOSITE THE FLAT END FACE OF THE STATOR, THE STATOR BEING ANNULAR IN FORM AND HAVING AN AIR CHAMBER ARRANGED THEREIN FOR CONNECTION WITH A SOURCE OF COMPRESSED AIR, THE AIR CHAMBER BEING PROVIDED WITH A FLAT CLOSURE PLATE FORMING THE FLAT END FACE OF THE STATOR AND DISPOSED OPPOSITE THE FLAT FACE OF THE ROTOR, AND A MAGNET EXTENDING CENTRALLY
Claim 4
Independent Claim
141 words
AN APPARATUS FOR FALSE TWISTING AND CRIMPING A YARN COMPRISING A TENSIONING DEVICE, A TWIST STOPPING DEVICE, A HEATER THROUGH WHICH THE YARN IS DRAWN, AN ELECTRIC MOTOR HAVING A STATOR SHAPED TO PROVIDE A NUMBER OF HOLES TERMINATING IN A FLAT END FACE, THE STATOR BEING PROVIDED WITH WINDINGS FOR CONNECTION WITH A SOURCE OF ALTERNATING ELECTRIC CURRENT SUPPLY SO AS TO PRODUCE A ROTATING MAGNETIC FIELD, THE MOTOR HAVING A ROTOR COMPRISING A FLAT FACED HYSTERESIS MEMBER DISPOSED OPPOSITE THE FLAT END FACE OF THE STATOR, THE STATOR BEING ANNULAR IN FORM AND HAVING AN AIR CHAMBER ARRANGED THEREIN FOR CONNECTION WITH A SOURCE OF COMPRESSED AIR, THE AIR CHAMBER BEING PROVIDED WITH A FLAT CLOSURE PLATE FORMING THE FLAT END FACE OF THE STATOR AND DISPOSED OPPOSITE THE FLAT FACE OF THE ROTOR, AND A MAGNET EXTENDING CENTRALLY
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |