Cultivator
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKazuyoshi Miyahara, Hideaki Kobayashi
Life of this patent
Estimating the term…
Abstract
Driving worm provided on a transmission shaft, driven worm wheel provided on a cultivating shaft, main shaft portion of the transmission shaft and clutch are collectively accommodated in a transmission casing, which includes first and second bearings for preventing the clutch and driving gear from being displaced toward each other. The main shaft portion is screw-coupled to the clutch and a direction in which the screw-coupling between the main shaft portion and the clutch is tightened corresponds to only one rotational direction of an engine. The casing has a single opening for inserting therein the worm and worm wheel, and the opening is closed with a lid that also functions to prevent the worm from coming off the casing.
Claims4
A cultivator comprising:
- an engine rotatable only in one rotational direction;
- a transmission shaft having a driving gear provided thereon, said transmission shaft having a main shaft portion that is smaller in diameter than said driving gear and projecting from one end of said driving gear, said main shaft portion being operatively connected to said engine via a clutch;
- a cultivating shaft having cultivating claws and a driven gear provided thereon, said driven gear meshingly engaging with said driving gear;
- and
- a transmission casing having said driven gear, said driving gear, the main shaft portion of said transmission shaft and said clutch collectively accommodated therein, said transmission casing including a first bearing for preventing said clutch from being displaced toward said driving gear and a second bearing for preventing said driving gear from being displaced toward said clutch,
- wherein the main shaft portion of said transmission shaft is screw-coupled to said clutch and a direction in which screw-coupling between the main shaft portion and said clutch is tightened corresponds to the one rotational direction of said engine.
Dependencies are inferred from the claim text.