Transmission for self-propelled walking lawn mowers

A transmission for self-propelled walking lawn mowers comprising:

• a casing having a top wall and a bottom wall;
• an input shaft connected to a drive source and extending within the casing;
• an output shaft penetrating the casing and adapted to be connected to drive wheels;
• an intermediate shaft disposed parallel to the output shaft and connected to the input shaft via a transmission gear mechanism;
• at least one drive gear mounted on the intermediate shaft;
• a driven gear set, comprising at least one gear, mounted on the output shaft to mesh with the drive gear;
• and
• a clutch mounted on the intermediate shaft to engage and disengage the drive gear set with and from the intermediate shaft,
• wherein the input shaft extends from the top wall to the bottom wall of the casing and is supported by these walls.

A transmission for self-propelled walking lawn mowers comprising:

• a casing having a top wall and a bottom wall;
• an input shaft connected to a drive source and extending within the casing;
• an output shaft penetrating the casing and adapted to be connected to drive wheels;
• an intermediate shaft disposed parallel to the output shaft and connected to the input shaft via a transmission gear mechanism;
• at least one drive gear mounted on the intermediate shaft;
• a driven gear set, comprising at least one gear, mounted on the output shaft to mesh with the drive gear;
• and
• a clutch mounted on the intermediate shaft to engage and disengage the drive gear set with and from the intermediate shaft,
• wherein the clutch is a cone-shaped clutch.

A transmission for self-propelled walking lawn mowers comprising:

• a casing;
• an input shaft connected to a drive source and extending horizontally within the casing;
• an output shaft penetrating the casing and adapted to be connected to drive wheels;
• and
• an intermediate shaft disposed parallel to the output shaft, the intermediate shaft being connected to the input shaft via a first transmission gear mechanism and to the output shaft via a second transmission gear mechanism,
• wherein the casing consists of two mating halves between which the output shaft is held, and
• wherein the first transmission gear mechanism comprises an input gear mounted on the input shaft and a driven gear disposed at one end of the intermediate shaft to mesh with the input gear.