# US 7,743,590 B1 · Drive adapter for riding lawnmower

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- Number: US 7,743,590 B1
- Document ID: US7743590B1
- Status: Granted
- Kind: B1
- Application number: 12/499,920
- Filed: 2009-07-09
- Granted: 2010-06-29
- Earliest claimed: 2008-07-10
- Assignees: Liquid Combustion Technology LLC
- Inventors: Keith Gidden; Douglas Lloyd Glass
- Web page: https://patentgrep.com/patent/US7743590B1

## CPC

- A01D 34/82: Other details
- A01D: HARVESTING; MOWING

## Abstract

An accessory drive attachment is provided. The accessory drive attachment may be attached to a lawnmower that has a hydrostatic transmission. The transmission system of the lawnmower may be used to drive a shaft of the accessory drive attachment. An accessory such as a leaf blower, air compressor, pressure washer, or electric generator may be attached to the accessory drive attachment and driven by the shaft.

## Claims

### Claim 1

An accessory drive attachment, comprising:
an application mounting plate configured for having an accessory mounted thereon;
a shaft configured for rotating with respect to the application mounting plate, wherein the shaft is configured for engaging the accessory mounted to the application mounting plate for use in driving the accessory, wherein the application mounting plate has an aperture disposed therethrough for the shaft to allow the shaft to engage the accessory when the accessory is mounted onto the application mounting plate; and
a pulley engaging the shaft, wherein the pulley is capable of being rotated by a transmission of a lawnmower, wherein the pulley is located below the application mounting plate such that the application mounting plate is located between the pulley and the accessory that is mounted to the application mounting plate.

### Claim 2 (depends on 1)

The accessory drive attachment as set forth in claim 1, wherein the accessory is selected from the group consisting of a pressure washer, an electric generator, a trash pump, a leaf blower, an air compressor, and a water pump, wherein the shaft has an opening on one end that extends along a portion of the axial distance of the shaft, and further comprising:
an attachment cover having an interior, wherein the pulley is located in the interior of the attachment cover;
a mounting bracket located between the attachment cover and the application mounting plate;
a first bearing engaging the shaft;
a first bearing support bracket attached to the mounting plate and engaging the first bearing;
a second bearing engaging the shaft and located in the interior of the attachment cover; and
a second bearing support bracket attached to the first bearing support bracket and engaging the second bearing.

### Claim 3

A hydrostatic transmission drive unit configured for powering interchangeable accessories, comprising:
an application mounting plate having an aperture;
a hydrostatic transmission;
a shaft driven by the hydrostatic transmission;
a pressure washer mounted onto the application mounting plate, wherein the aperture of the application mounting plate is arranged so as to allow the shaft to be placed into communication with the pressure washer such that the hydrostatic transmission drives the shaft which in turn drives the pressure washer, wherein the application mounting plate, the hydrostatic transmission, the shaft, and the pressure washer are all components of a riding lawnmower.

### Claim 4

A riding lawnmower, comprising:
a hydrostatic transmission; and
an accessory drive attachment configured for driving an accessory, wherein the accessory drive attachment comprising:
an application mounting plate having an aperture, wherein the application mounting plate has a plurality of mounting apertures to allow the accessory to be attached to the application mounting plate;
a shaft positioned with respect to the aperture of the application mounting plate so as to allow the shaft to be placed into communication with the accessory, wherein the accessory can be removed from the application mounting plate and a second, different accessory is attached through use of the plurality of mounting apertures to the application mounting plate to allow the shaft to be placed into communication with the second, different accessory for use in driving the second, different accessory.

### Claim 5 (depends on 4)

The riding lawnmower as set forth in claim 4, wherein the accessory drive attachment is driven by the hydrostatic transmission.

### Claim 6 (depends on 4)

The riding lawnmower as set forth in claim 4, wherein the accessory drive attachment is driven by an engine of the riding lawnmower.

### Claim 7 (depends on 4)

The riding lawnmower as set forth in claim 4, wherein the accessory is selected from the group consisting of a pressure washer, an electric generator, a trash pump, a leaf blower, an air compressor, and a water pump.