US3077664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric grass trimmer
Assignee: PHONEX INSTR Co Inc
•
Filing: 1961-02-21
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Granted: 1963-02-19
•
Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Edmund R Murawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:33
CPC Classifications
A; A01; A01D; A01D69/00; A01D69/02; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/76; A01D34/78; A01D34/835; A01D34/90; Y; Y10; Y10S; Y10S30/00; Y10S30/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
AN ELECTRIC GRASS TRIMMER INCLUDING: AN ELECTRIC MOTOR HOUSING OF SUBSTANTIALLY TUBULAR CONFIGURATION; AN ELECTRIC MOTOR COAXIALLY MOUNTED WITHIN SAID MOTOR HOUSING AND HAVING A DRIVE SHAFT ROTATABLE ABOUT THE LONGITUDINAL AXIS OF SAID TUBULAR MOTOR HOUSING; CUTTING BLADE RETAINER MEANS COUPLED TO SAID DRIVE SHAFT TO BE ROTATABLY DRIVEN THEREBY; AN ELONGATED TUBULAR SHAFT AFFIXED TO SAID TUBULAR MOTOR HOUSING AND EXTENDING UPWARDLY THEREFROM AT INCLINATION TO SAID LONGITUDINAL AXIS THEREOF, SAID TUBULAR SHAFT HAVING A DIAMETER SMALL AS COMPARED WITH THE DIAMETER OF SAID TUBULAR MOTOR HOUSING; AN ELONGATED TUBULAR HOLLOW HANDLE MEMBER MOUNTED AT THE UPPER END OF SAID TUBULAR SHAFT DEFINING A BATTERY HOUSING AND HAVING A DIAMETER LARGE AS COMPARED WITH THE DIAMETER OF SAID TUBULAR SHAFT; BATTERY CONTACT MEANS MOUNTED ON SAID BATTERY HOUSING; MANUALLY OPERATED SWITCH MEANS MOUNTED ON SAID HANDLE MEMBER; AND WIRE CONNECTING MEANS EXTENDING DOWN SAID TUBULAR SHAFT FROM SAID BATTERY HOUSING TO SAID MOTOR HOUSING, SAID WIRE CONNECTING MEANS BEING CONNECTED TO SAID BATTERY CONTACT MEANS AND TO SAID SWITCH MEANS IN SAID BATTERY HOUSING AT ONE END AND TO SAID ELECTRIC MOTOR IN SAID MOTOR HOUSING AT THE OTHER END FOR CONTROLLABLY ENERGIZING SAID MOTOR.
Claim 2
Dependent Claim
197 words
AN ELECTRIC GRASS TRIMMER INCLUDING: AN ELECTRIC MOTOR HOUSING OF SUBSTANTIALLY TUBULAR CONFIGURATION; AN ELECTRIC MOTOR COAXIALLY MOUNTED WITHIN SAID MOTOR HOUSING AND HAVING A DRIVE SHAFT ROTATABLE ABOUT THE LONGITUDINAL AXIS OF SAID TUBULAR MOTOR HOUSING; CUTTING BLADE RETAINER MEANS COUPLED TO SAID DRIVE SHAFT TO BE ROTATABLY DRIVEN THEREBY; AN ELONGATED TUBULAR SHAFT AFFIXED TO SAID TUBULAR MOTOR HOUSING AND EXTENDING UPWARDLY THEREFROM AT INCLINATION TO SAID LONGITUDINAL AXIS THEREOF, SAID TUBULAR SHAFT HAVING A DIAMETER SMALL AS COMPARED WITH THE DIAMETER OF SAID TUBULAR MOTOR HOUSING; AN ELONGATED TUBULAR HOLLOW HANDLE MEMBER MOUNTED AT THE UPPER END OF SAID TUBULAR SHAFT DEFINING A BATTERY HOUSING AND HAVING A DIAMETER LARGE AS COMPARED WITH THE DIAMETER OF SAID TUBULAR SHAFT; BATTERY CONTACT MEANS MOUNTED ON SAID BATTERY HOUSING; MANUALLY OPERATED SWITCH MEANS MOUNTED ON SAID HANDLE MEMBER; AND WIRE CONNECTING MEANS EXTENDING DOWN SAID TUBULAR SHAFT FROM SAID BATTERY HOUSING TO SAID MOTOR HOUSING, SAID WIRE CONNECTING MEANS BEING CONNECTED TO SAID BATTERY CONTACT MEANS AND TO SAID SWITCH MEANS IN SAID BATTERY HOUSING AT ONE END AND TO SAID ELECTRIC MOTOR IN SAID MOTOR HOUSING AT THE OTHER END FOR CONTROLLABLY ENERGIZING SAID MOTOR.
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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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |