US3434026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically operated reciprocating tool
Assignee: Duo Fast Corp
•
Filing: 1966-12-12
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Granted: 1969-03-18
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Richard H Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:39
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/06; H; H02; H02K; H02K33/00; H02K33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ELECTRIC TOOL ADAPTED TO BE ENERGIZED BY AN ALTERNATING CURRENT POTENTIAL SOURCE COMPRISING A HOUSING, WINDING MEANS IN SAID HOUSING, AN ARMATURE ASSEMBLY MOUNTED FOR MOVEMENT ADJACENT THE WINDING MEANS, SAID WINDING MEANS INCLUDING A PLURALITY OF WINDING ARRANGED ALONG THE PATH OF MOVEMENT OF SAID ARMATURE ASSEMBLY, AND A CONTROL CIRCUIT FOR MOVING SAID ARMATURE ASSEMBLY THROUGH A SINGLE POWER STROKE AND INCLUDING MEANS FOR ENERGIZING SAID WINDINGS ON SUCCEEDING HALF CYCLES OF THE ALTERNATING CURRENT POTENTIAL SOURCE AND IN A SEQUENCE CORRESPONDING TO THE DIRECTION OF MOVEMENT OF SAID ARMATURE ASSEMBLY IN SAID POWER STROKE.
Claim 2
Dependent Claim
98 words
AN ELECTRIC TOOL ADAPTED TO BE ENERGIZED BY AN ALTERNATING CURRENT POTENTIAL SOURCE COMPRISING A HOUSING, WINDING MEANS IN SAID HOUSING, AN ARMATURE ASSEMBLY MOUNTED FOR MOVEMENT ADJACENT THE WINDING MEANS, SAID WINDING MEANS INCLUDING A PLURALITY OF WINDING ARRANGED ALONG THE PATH OF MOVEMENT OF SAID ARMATURE ASSEMBLY, AND A CONTROL CIRCUIT FOR MOVING SAID ARMATURE ASSEMBLY THROUGH A SINGLE POWER STROKE AND INCLUDING MEANS FOR ENERGIZING SAID WINDINGS ON SUCCEEDING HALF CYCLES OF THE ALTERNATING CURRENT POTENTIAL SOURCE AND IN A SEQUENCE CORRESPONDING TO THE DIRECTION OF MOVEMENT OF SAID ARMATURE ASSEMBLY IN SAID POWER STROKE.
References Cited (Backward Citations)
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Cited
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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) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |