Patent US3225232A successfully refreshed from Google Patents.
US3225232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed portable tool
Assignee: Singer Co
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Filing: 1962-10-17
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Granted: 1965-12-21
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Expires: 1982-10-17
Abstract
No abstract record available.
Inventors
- 👤 James F Turley
- 👤 Don B Winchester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:15
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/66; H01; H01H; H01H9/00; H01H9/02; H01H9/06; H01H9/061; H02K11/00; H02K11/30; H02K11/33; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/295; H01H9/52; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/919; Y10S388/935; Y10S388/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN A PORTABLE TOOL POWERED BY AN ELECTRIC MOTOR, A HOUSING FOR SAID MOTOR FORMED WITH A REARWARDLY EXTENDING BEARING BRACKET HAVING DIAMETRICALLY POSITIONED BOSSES INTEGRAL THEREWITH, AN ARMATURE HAVING ONE OF ITS ENDS JOURNALED IN SAID REARWARDLY EXTENDING BEARING BRACKET, A MOTOR-CONTROL CIRCUIT BOARD SECURED TO SAID DIAMETRICALLY POSITIONED BOSSES AND POSITIONED TRANSVERSELY OF THE AXIS OF ROTATION OF SAID ARMATURE, AN END-COVER CONTAINING AIR INLET OPENINGS AND A KNOB APERTURE AND FORMING WITH SAID MOTOR HOUSING A PROTECTIVE ENCLOSURE FOR SAID CIRCUIT BOARD, FAN MEANS PROVIDING A FLOW OF COOLING AIR THROUGH SAID AIR INLET OPENINGS AROUND SAID CIRCUIT BOARD AND ALONG THE AXIS OF SAID ARMATURE,O AND STATIONARY ELECTRICAL COMPONENTS MOUNTED ON SAID CIRCUIT BOARD INCLUDING AN OPERATOR-ADJUSTABLE CONTROL ELEMENT HAVING AN INSULATED TURNABLE KNOB PROJECTING THROUGH THE KNOB APERTURE IN SAID END COVER, SAID KNOB BEING TURNABLE ON AN AXIS SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID ARMATURE.
Claim 2
Dependent Claim
154 words
IN A PORTABLE TOOL POWERED BY AN ELECTRIC MOTOR, A HOUSING FOR SAID MOTOR FORMED WITH A REARWARDLY EXTENDING BEARING BRACKET HAVING DIAMETRICALLY POSITIONED BOSSES INTEGRAL THEREWITH, AN ARMATURE HAVING ONE OF ITS ENDS JOURNALED IN SAID REARWARDLY EXTENDING BEARING BRACKET, A MOTOR-CONTROL CIRCUIT BOARD SECURED TO SAID DIAMETRICALLY POSITIONED BOSSES AND POSITIONED TRANSVERSELY OF THE AXIS OF ROTATION OF SAID ARMATURE, AN END-COVER CONTAINING AIR INLET OPENINGS AND A KNOB APERTURE AND FORMING WITH SAID MOTOR HOUSING A PROTECTIVE ENCLOSURE FOR SAID CIRCUIT BOARD, FAN MEANS PROVIDING A FLOW OF COOLING AIR THROUGH SAID AIR INLET OPENINGS AROUND SAID CIRCUIT BOARD AND ALONG THE AXIS OF SAID ARMATURE,O AND STATIONARY ELECTRICAL COMPONENTS MOUNTED ON SAID CIRCUIT BOARD INCLUDING AN OPERATOR-ADJUSTABLE CONTROL ELEMENT HAVING AN INSULATED TURNABLE KNOB PROJECTING THROUGH THE KNOB APERTURE IN SAID END COVER, SAID KNOB BEING TURNABLE ON AN AXIS SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID ARMATURE.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |