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US3561199A Expired / Lapsed US ⏱️ 0.0 years remaining

System for converting edger-trimmer device

Assignee: GW Murphy Industries Inc
•
Filing: 1969-07-17
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Granted: 1971-02-09
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Expires: 1989-07-17
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Abstract

Abstract AN EDGER-TRIMMER DEVICE WHICH HAS A CUTTING BLADE MOUNTED ON A CASING, A HANDLE SECURED TO A CARRIAGE AND IN WHICH THE CASING IS PIVOTAL RELATIVE TO THE HANDLE AND CARRIAGE COMBINATION. THE INTERCONNECTION BETWEEN CASING AND CARRIAGE INCLUDES A TUBULAR EXTENSION FROM THE CARRIAGE PIVOTALLY RECEIVED IN A CYLINDRICAL RECEIVER IN THE CASING AND RESTRAINED BY A PIN AND GROOVE ARRANGEMENT FROM AXIAL MOVEMENT RELATIVE THERETO. THE CASING CAN BE PIVOTED 90* RELATIVE TO THE CARRIAGE TO DISPOSE THE BLADE HORIZONTALLY FOR TRIMMING OR VERTICALLY FOR EDGING. A LOCK- ING DEVICE IS PROVIDED FOR LOCKING THE CASING IN BOTH POSITIONS AS WELL AS ANY INTERMEDIATE POSITION. THE LOCKING DEVICE INCLUDES A BRAKE SHOE ENGAGING THE TUBULAR EXTENSION OF THE CARRIAGE AND A HANDLE WITH A THREADED SHANK RECEIVED IN A THREADED BORE IN THE CASING AND HAVING ITS INNER END ENGAGING THE SHOE FOR PRESSING THE SHOE AGAINST THE TUBULAR EXTENSION TO LOCK THE CASING AGAINST PIVOTAL MOVEMENT. WHEN THE HANDLE IS LOOSENED THE SHOE IS RELEASED AND THE CASING CAN BE PIVOTED.

Inventors

  • 👤 Michael T Lay

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 09:55
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/84

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-02-08 1974-08-10 1975-02-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-08 1978-08-10 1979-02-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-08 1982-08-10 1983-02-09 $7700.00 Window Closed / Lapsed

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