US3328613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control system for electrically powered tools of the trigger controlled type
Assignee: Skil Corp
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Filing: 1966-10-26
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Granted: 1967-06-27
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Expires: 1986-10-26
Abstract
No abstract record available.
Inventors
- 👤 Alex F Gawron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:16
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/02; H01H9/06; H01H9/061; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A SPEED CONTROL UNIT FOR AN ELECTRICALLY OPERATED HAND MANIPULATABLE TOOL, SAID UNIT COMPRISING, A CASING ADAPTED TO BE MOUNTED IN THE HOUSING OF SAID TOOL, A TRIGGER MOVABLY MOUNTED ON SAID CASING FOR OSCILLATING MOVEMENT, A ROTARY POTENTIOMETER MOUNTED ON SAID CASING IN ADJACENT RELATION WITH SAID TRIGGER, ONE OR MORE COMPONENTS IN SAID CASING DEFINING AN ELECTRICAL CIRCUIT CONNECTED WITH SAID POTENTIOMETER, WHICH CIRCUIT IS ADAPTED TO CONTROL THE SPEED OF AN ASSOCIATED TOOL MOTOR, A GEAR FIXED ON THE ROTARY ELEMENT OF SAID POTENTIOMETER, A SERIES OF GEAR TEETH ON SAID TRIGGER AND EXTENDING ALONG THE DIRECTION OF MOVEMENT THEREOF, WHICH GEAR TEETH ARE IN ENGAGEMENT WITH SAID GEAR AND ARE THEREBY ADAPTED TO ROTATE SAID ROTARY ELEMENT OF THE POTENTIOMETER UPON ACTUATION OF SAID TRIGGER.
Claim 2
Dependent Claim
129 words
A SPEED CONTROL UNIT FOR AN ELECTRICALLY OPERATED HAND MANIPULATABLE TOOL, SAID UNIT COMPRISING, A CASING ADAPTED TO BE MOUNTED IN THE HOUSING OF SAID TOOL, A TRIGGER MOVABLY MOUNTED ON SAID CASING FOR OSCILLATING MOVEMENT, A ROTARY POTENTIOMETER MOUNTED ON SAID CASING IN ADJACENT RELATION WITH SAID TRIGGER, ONE OR MORE COMPONENTS IN SAID CASING DEFINING AN ELECTRICAL CIRCUIT CONNECTED WITH SAID POTENTIOMETER, WHICH CIRCUIT IS ADAPTED TO CONTROL THE SPEED OF AN ASSOCIATED TOOL MOTOR, A GEAR FIXED ON THE ROTARY ELEMENT OF SAID POTENTIOMETER, A SERIES OF GEAR TEETH ON SAID TRIGGER AND EXTENDING ALONG THE DIRECTION OF MOVEMENT THEREOF, WHICH GEAR TEETH ARE IN ENGAGEMENT WITH SAID GEAR AND ARE THEREBY ADAPTED TO ROTATE SAID ROTARY ELEMENT OF THE POTENTIOMETER UPON ACTUATION OF SAID TRIGGER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |