US3221192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed hand tool
Assignee: DISSTON COMPANY 1030 W MARKET ST GREENSBORO NC 27401 A CORP OF
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Filing: 1962-10-11
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Granted: 1965-11-30
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Expires: 1982-10-11
Abstract
No abstract record available.
Inventors
- 👤 Burton P Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:35
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/295; H01; H01H; H01H9/00; H01H9/02; H01H9/06; H01H9/061; H01H9/52; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/918; Y10S388/935; Y10S388/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A VARIABLE SPEED PORTABLE ELECTRIC HAND TOOL HAVING A CASING, A HANDLE FIXED TO SAID CASING INCLUDING A PISTOL TYPE HAND GRIP PORTION, A DRIVE MOTOR MOUNTED IN SAID CASING, A SERVICE WIRE CONNECTED TO SAID TOOL AND PROVIDING AN ALTERNATING VOLTAGE SORUCE, A PIVOTED ON-OFF SWITCH FOR SAID SOURCE MOUNTED IN SAID HAND GRIP PORTION AND ADAPTED TO INDEX FINGER OPERATION, A SUBSTANTIALLY CONSTANT SPEED CONTROL CIRCUIT MOUNTED IN SAID CASING AND HAVINGG A ROTATATBLE SPEED CONTROL ELEMENT THEREFOR, MEANS FOR REGULATING SAID ELEMENT COMPRISING A KNOB, SAID KNOB BEING RECESSED IN THE SIDE OF SAID HANLDE AND OCCUPYING A POSITION WHEN SAID HANDLE IS VERTICAL WHICH IS ABOVE, SLIGHTLY FORWARD AND TO THE SIDE OF SAID SWITCH AND ARRANGED FOR ROTATION IN A PLANE WHICH IS SUBSTANTIALLY PARALLEL TO THE PLANE OF OPERATION OF SAID SWITCH, MEANS SECURING SAID KNOB TO SAID ELEMENT, THE ENERGIZATION AND SPEED OF SAID
Claim 2
Dependent Claim
152 words
IN A VARIABLE SPEED PORTABLE ELECTRIC HAND TOOL HAVING A CASING, A HANDLE FIXED TO SAID CASING INCLUDING A PISTOL TYPE HAND GRIP PORTION, A DRIVE MOTOR MOUNTED IN SAID CASING, A SERVICE WIRE CONNECTED TO SAID TOOL AND PROVIDING AN ALTERNATING VOLTAGE SORUCE, A PIVOTED ON-OFF SWITCH FOR SAID SOURCE MOUNTED IN SAID HAND GRIP PORTION AND ADAPTED TO INDEX FINGER OPERATION, A SUBSTANTIALLY CONSTANT SPEED CONTROL CIRCUIT MOUNTED IN SAID CASING AND HAVINGG A ROTATATBLE SPEED CONTROL ELEMENT THEREFOR, MEANS FOR REGULATING SAID ELEMENT COMPRISING A KNOB, SAID KNOB BEING RECESSED IN THE SIDE OF SAID HANLDE AND OCCUPYING A POSITION WHEN SAID HANDLE IS VERTICAL WHICH IS ABOVE, SLIGHTLY FORWARD AND TO THE SIDE OF SAID SWITCH AND ARRANGED FOR ROTATION IN A PLANE WHICH IS SUBSTANTIALLY PARALLEL TO THE PLANE OF OPERATION OF SAID SWITCH, MEANS SECURING SAID KNOB TO SAID ELEMENT, THE ENERGIZATION AND SPEED OF SAID
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |