Walk-behind self-propelled power equipment unit with speed control

• US 20030056481A1
• Filed: 09/25/2001
• Published: 03/27/2003
• Est. Priority Date: 09/25/2001
• Status: Active Grant

• Current Assignee: Harlin J. Trefz
• Original Assignee: Harlin J. Trefz
• Inventors: Trefz, Harlin J.
• Granted Patent: US 6,644,002 B2
• Time in Patent Office: Days
• US Class Current: 56/11.1
• CPC Class Codes: A01D 2034/6843 Control levers on the handle of the mower
• CPC Class Codes: A01D 2101/00 Lawn-mowers
• CPC Class Codes: A01D 34/6806 Driving mechanisms for the cutters A01D34/76
• CPC Class Codes: Y10S 56/18 Handles

Abstract

A self-propelled power equipment unit having a frame with a handle having a general U-shaped rear end; a drive located on the frame and connected to a drive wheel by a transmission; and a user actuated control connected to the transmission. The user actuated control comprises a speed control lever pivotably connected to the handle proximate the U-shaped rear end and an operator presence lever pivotably connected to the speed control lever.

Claims

1. A self-propelled power equipment unit comprising:

a frame comprising a handle with a general U-shaped rear end;

a drive located on the frame and connected to a drive wheel by a transmission; and

a user actuated control connected to the transmission, the user actuated control comprising a speed control lever pivotably connected to the handle proximate the U-shaped rear end and an operator presence lever pivotably connected to the speed control lever.

2. A self-propelled power equipment unit as in claim 1 wherein the speed control lever comprises a general U-shaped member with opposite legs of the U-shaped member directly pivotably connected to opposite sides of the handle.

3. A self-propelled power equipment unit as in claim 2 wherein the user actuated control comprises a link connected between an end of one of the legs and the transmission.

4. A self-propelled power equipment unit as in claim 3 wherein the link comprises a cable.

5. A self-propelled power equipment unit as in claim 2 further comprising a friction pack directly between an outwardly facing side of one of the legs and an inwardly facing side of the handle.

6. A self-propelled power equipment unit as in claim 2 wherein the legs extended in a general forward and upward direction.

7. A self-propelled power equipment unit as in claim 6 wherein the legs are connected to the handle at bends between the legs and a center connecting section of the U-shaped member.

8. A self-propelled power equipment unit as in claim 7 wherein the speed control lever further comprises an extension extending downwardly from the U-shaped member, and a link connected between the extension and the transmission.

9. A self-propelled power equipment unit as in claim 1 wherein the user actuated control further comprises a cable connected to the operator presence lever and a guide on the speed control lever for the cable to guidingly wrap partially around.

10. A self-propelled power equipment unit as in claim 1 wherein the operator presence lever comprises a general U-shaped member.

11. A self-propelled power equipment unit as in claim 10 wherein ends of legs of the U-shaped member are directly pivotably attached to the speed control lever.

12. A self-propelled power equipment unit as in claim 10 wherein a center connecting section of the U-shaped member is directly pivotably attached to the speed control lever.

13. A self-propelled power equipment unit as in claim 10 wherein the speed control lever comprises a general U-shaped member, and wherein the U-shaped member of the operator presence lever is aligned in a same orientation as the U-shaped member of the speed control lever when the operator presence lever is actuated to an ON position.

14. A walk-behind self-propelled lawnmower comprising:

a frame comprising a handle;

a motor located on the frame;

wheels connected to the frame;

a transmission connecting the motor to one of the wheels; and

a user actuated control comprising a speed control lever and a control link connected between the speed control lever and the transmission, wherein the speed control lever has a general U-shape with opposite side ends of the general U-shape each being pivotably connected to respective opposite sides of the handle, and wherein the control link is pulled by the speed control lever as a top of the lever is pivoted forward on the handle.

15. A walk-behind self-propelled lawnmower as in claim 14 wherein a first leg of the general U-shape speed control lever has a first end with the link connected thereto.

16. A walk-behind self-propelled lawnmower as in claim 15 wherein a middle section of the first leg is pivotably connected to the handle such that the end of the first leg moves in opposite unison relative to the top of the lever.

17. A walk-behind self-propelled lawnmower as in claim 16 wherein the user actuated control further comprises an operator presence lever, a cable attached to the operator presence lever, and a cable guide attached to the speed control lever, wherein the cable is located in a groove of the cable guide.

18. A walk-behind self-propelled lawnmower as in claim 16 wherein a second leg of the general U-shape speed control lever has a second end pivotably connected to the handle.

19. A walk-behind self-propelled lawnmower as in claim 14 wherein the user actuated control further comprises an operator presence lever pivotably attached to the speed control lever.

20. A walk-behind self-propelled lawnmower as in claim 19 wherein the operator presence lever comprises a U-shaped member which is aligned in a same orientation as the general U-shape speed control lever when the operator presence lever is actuated to an ON position.

21. A walk-behind self-propelled lawnmower as in claim 20 wherein legs of the U-shaped member of the operator presence lever are orientated in general upward and forward directions.

22. A walk-behind self-propelled lawnmower as in claim 14 wherein the general U-shape speed control lever comprises a center section and two leg sections extending from the center section, and wherein the center section is pivotably connected to the handle at junctions between the center section and the leg sections.

23. A walk-behind self-propelled lawnmower as in claim 14 wherein the user actuated control further comprises a friction pack sandwiched between one of the side ends of the speed control lever and an inwardly facing surface of the handle.

24. A walk-behind self-propelled lawnmower as in claim 14 wherein the handle comprises a main U-shaped member and a stationary grip handle extending in a forward direction from the main U-shaped member.

25. A method of assembling a user actuated control for a walk-behind self propelled lawnmower, the method comprising steps of:

providing a lawnmower handle;

pivotably connecting a user actuated control to the handle, the user actuated control having a general U-shaped section with opposite ends of the U-shaped section being directly pivotably attached to respective opposite sides of the handle; and

connecting a link between the user actuated control and a drive transmission of the mower,

wherein the link is connected to the user actuated control such that the link is pulled by the user actuated control when a top end of the user actuated control is pivoted forward on the handle.