Saw gear box

摘要

A motor-driven concrete cutting saw and method in which the motor has an idler gear, a top slider gear slidably engageable and disengageable with the idler gear; and a bottom slider gear slidably engageable and disengageable with the idler gear. Both the top and bottom slider gears have two toothed disks, and the idler gear has two toothed disks, a main gap, and a third toothed disk. The toothed disks are sized to produce, when engaged with one another, multiple speeds including a neutral setting that would allow the motor to disengage from the saw blade while running.

主权项

1. A method of generating multiple speeds on a concrete cutting saw, comprising the steps of:
a. providing an idler gear; b. providing a top slider gear slidably engageable and disengageable with the idler gear; and c. providing a bottom slider gear slidably engageable and disengageable with the idler gear; d. sliding the top slider gear into one of a multiple top slider gear positions relative to the idler gear in combination with sliding the bottom slider gear into one of a multiple bottom slider gear positions relative to the idler gear to generate multiple transmission speeds; e. wherein the top slider gear comprises:
i. a first toothed disk having a first size, andii. a second toothed disk having a second size; f. wherein the idler gear comprises:
i. a third toothed disk having a third size,ii. a fourth toothed disk adjacent to the third toothed disk, the fourth toothed disk having a fourth size,iii. a fifth toothed disk having a fifth size, andiv. a main gap in between the fourth toothed disk and the fifth toothed disk; and g. wherein the bottom slider gear comprises:
i. a sixth toothed disk having a sixth size,ii. a seventh toothed disk adjacent to the sixth toothed disk, the seventh toothed disk having a seventh size, and h. wherein the first size and the fifth size are small sizes, the fourth size and sixth size are intermediate-sized sizes, and the second size, the third size, and the seventh size are large sizes.