Rotary blade coupling for lawn mower

Details Rotary blade coupling for lawn mower Rotary blade coupling for lawn mower

1977-09-20

1979-06-26

Eskovitz, Jay N.

Harvesters

Motorized harvester

With selective control of drive means

56 103, 56 118, 192 17R, 192 28, A01D 7520

Patent

active

041589440

ABSTRACT:
This invention relates to a coupling device and especially a coupling device operable by a dead-man's handle on a lawnmower. When used in a lawnmower the coupling device couples the motor shaft to the cutting blade. A spool has a hole in it that surrounds the shaft. A rotary connecting device normally couples the spool to the shaft so that the spool and shaft rotate together. A disconnect element and brake are operated when the dead-man's handle is released to disconnect the spool from the shaft and subsequently stop the spool. The cutting blade has a central hole through which the spool passes. The blade is in frictional contact with the flanges of the spool and is rotated thereby.

REFERENCES:
patent: 1043932 (1912-11-01), Herrick
patent: 2201715 (1940-05-01), Burnett
patent: 2746584 (1956-05-01), Skromme
patent: 3493088 (1970-02-01), Hoff
patent: 4044533 (1977-08-01), Wick
patent: 4048788 (1977-09-01), Kamlukin et al.
patent: 4055935 (1977-11-01), Malion et al.

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