MULCH GATE CONTROL LEVER

Abstract

A mulch gate control lever includes a handle that moves a mulch gate on a vertical pivot axis between a first mulching position and a second side discharge position. A torsion spring biases the handle to move into a first position slot at a first end of a slotted bracket to retain the mulch gate at the first mulching position, and into a second position slot at a second end of the slotted bracket to retain the mulch gate at the second side discharge position.

Claims

1. A mulch gate control lever, comprising: a pivot bracket pivotably mounted on a vertical pivot axis on a top surface of a mower deck; a handle attached to the pivot bracket; a mulch gate mounted under the mower deck and pivotable on the vertical pivot axis between a first mulching position and a second side discharge position; a slotted bracket mounted to the top surface of the mower deck; a spring biasing the handle to engage a first end of the slotted bracket to hold the mulch gate at the first mulching position, or a second end of the slotted bracket to hold the mulch gate at the second side discharge position.

2. The mulch gate control lever of claim 1 further comprising a first position slot at the first end of the slotted bracket and a second position slot at the second end of the slotted bracket.

3. The mulch gate control lever of claim 2 wherein each of the position slots has a sloped side wall.

4. The mulch gate control lever of claim 1 wherein the spring is a torsion spring connecting between the pivot bracket and the handle.

5. The mulch gate control lever of claim 1 wherein the handle pivots on a horizontal axis relative to the pivot bracket.

6. A mulch gate control lever, comprising: a handle pivotably mounted on a horizontal pivot axis to a pivoting bracket; the pivoting bracket pivoting on a vertical axis along with a mulch gate between a first mulching position and a second side discharge position; a spring urging the handle to pivot on the horizontal axis into engagement with a position slot at each of the first mulching position and the second side discharge position.

7. The mulch gate control lever of claim 6 wherein the spring is a torsion spring connected between the handle and the pivoting bracket.

8. The mulch gate control lever of claim 6 wherein each of the position slots is in a slotted bracket on the mower deck.

9. The mulch gate control lever of claim 8 wherein each of the position slots has a sloped side wall.

10. A mulch gate control lever, comprising: a handle that moves a mulch gate on a vertical pivot axis between a first mulching position and a second side discharge position; a torsion spring that biases the handle to move into a first position slot at a first end of a slotted bracket to retain the mulch gate at the first mulching position, and into a second position slot at a second end of the slotted bracket to retain the mulch gate at the second side discharge position.

11. The mulch gate control lever of claim 10, wherein each of the slots has at least one sloped side wall.

12. The mulch gate control lever of claim 10 wherein the slotted bracket has a horizontal slot between the first position slot and the second position slot.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a top perspective view of a mower deck with a mulch gate control lever in the mulching position, according to a first embodiment of the invention.

[0007] FIG. 2 is a top perspective view of a mower deck with a mulch gage control lever in a side discharge position, according to a first embodiment of the invention.

[0008] FIG. 3 is a top perspective view of a mulch gate control lever in the mulching position according to a first embodiment of the invention.

[0009] FIG. 4 is a top perspective view of a mulch gate control lever in the side discharge position according to a first embodiment of the invention.

[0010] FIG. 5 is a bottom perspective view of a multi-bladed mower deck used with a mulch gate in a closed position according to a first embodiment of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0011] As shown in FIGS. 1 and 2, in one embodiment, mulch gate control lever 100 may be used to open and close one or more mulch gates under multi-blade mower deck 102. Each mulch gate may be pivotably mounted under the mower deck on a generally vertical pivot axis. For example, mulch gate 106 may be pivotably mounted on vertical pivot axis 104 adjacent the side discharge opening of the mower deck. Additional mulch gates also may be provided between the cutting chambers and may be connected by linkages under the mower deck allowing the mulch gates to pivot together. Stationary baffles also may be installed under the deck with the mulch kit to direct the flow of grass clippings. For example, front baffle 124 may direct the flow of clippings and help support pivot axis 104, and side baffle 126 may cover part of the mower deck's side discharge opening.

[0012] In one embodiment, mulch gate control lever 100 may be used to pivot mulch gate 106 between a first mulching (closed) position shown in FIG. 1, and a second side discharge (open) position shown in FIG. 2. The mulch gate control lever also may open and close additional mulch gates connected by linkages. The mulch gate control lever may include handle 108 pivotably mounted to pivot bracket 110. The pivot bracket may be a U-shaped structure mounted on the same vertical pivot axis 104 as mulch gate 106. For example, the pivot bracket may be attached to a rod or threaded fastener 120 extending through the top of the mower deck where it also may be attached to mulch gate 106. Handle 108 may pivot on horizontal axis 128 with respect to pivot bracket 110. For example, the handle may be a wire form having a first end extending through one or more openings in the pivot bracket and through torsion spring 112. The torsion spring may engage the pivot bracket and may bias the handle to pivot on horizontal axis 128 toward the first mulching (closed) position shown in FIG. 3 or the second side discharge (open) position shown in FIG. 4.

[0013] In one embodiment shown in FIGS. 3 and 4, mulch gate control lever 100 may engage slotted bracket 118 mounted with fasteners to the top surface of the mower deck. Handle 108 may be inserted through horizontal slot 122 in slotted bracket 118. As handle 108 slides along horizontal slot 122, mulch gate 106 may pivot between the first mulching (closed) and second side discharge (open) positions. When handle 108 reaches the first end of horizontal travel slot 122, mulch gate 106 is in the first mulching (closed) position, and when handle 108 reaches the second end, the mulch gate is in the second side discharge (open) position. Position slots 114, 116 may be at each end of the horizontal travel slot. Torsion spring 112 may urge the handle down into first mulching (closed) position slot 114 at the first end, or second side discharge (open) position slot 116 at the second end. The torsion spring may provide force to firmly hold the handle in each position slot 114, 116. The side walls of each position slot may be angled or sloped to help keep the handle and mulch gate firmly in the first mulching (closed) position or second side discharge (open) as the mechanism wears over time. Additionally, the mulch gate control lever may include other intermediate position slots for holding firmly holding the mulch gate partially open.

[0014] Having described the preferred embodiment, it will become apparent that various modifications can be made without departing from the scope of the invention as defined in the accompanying claims.